Home      Discussion      Topics      Dictionary      Almanac
Signup       Login
CH-46 Sea Knight

CH-46 Sea Knight

Overview


The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem rotor
Tandem rotor
Tandem rotor helicopters have two large horizontal rotor assemblies mounted one in front of the other. Currently this configuration is mainly used for large cargo helicopters....

 transport helicopter
Helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally...

, used by the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 (USMC) to provide all-weather, day-or-night assault transport of combat troops, supplies and equipment. Assault Support
Assault Support
Assault Support is one of the six functions of United States Marine Corps aviation and comprises those actions required to airlift personnel, supplies or equipment into or within a battle area by helicopters or fixed-wing aircraft. It provides the Marine Air-Ground Task Force commander the...

 is its primary function, and the movement of supplies and equipment is secondary. Additional tasks include combat support, search and rescue, support for forward refueling and rearming points, CASEVAC
CASEVAC
Casualty evacuation, also known as CASEVAC or by the callsign Dustoff, is a military term for the emergency patient evacuation of casualties from a combat zone. Casevac can be done by both ground and air...

 and Tactical Recovery of Aircraft
Aircraft
An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...

 and Personnel (TRAP).
Discussion
Ask a question about 'CH-46 Sea Knight'
Start a new discussion about 'CH-46 Sea Knight'
Answer questions from other users
Full Discussion Forum
 
Unanswered Questions
Encyclopedia


The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem rotor
Tandem rotor
Tandem rotor helicopters have two large horizontal rotor assemblies mounted one in front of the other. Currently this configuration is mainly used for large cargo helicopters....

 transport helicopter
Helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally...

, used by the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 (USMC) to provide all-weather, day-or-night assault transport of combat troops, supplies and equipment. Assault Support
Assault Support
Assault Support is one of the six functions of United States Marine Corps aviation and comprises those actions required to airlift personnel, supplies or equipment into or within a battle area by helicopters or fixed-wing aircraft. It provides the Marine Air-Ground Task Force commander the...

 is its primary function, and the movement of supplies and equipment is secondary. Additional tasks include combat support, search and rescue, support for forward refueling and rearming points, CASEVAC
CASEVAC
Casualty evacuation, also known as CASEVAC or by the callsign Dustoff, is a military term for the emergency patient evacuation of casualties from a combat zone. Casevac can be done by both ground and air...

 and Tactical Recovery of Aircraft
Aircraft
An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...

 and Personnel (TRAP). The commercial version is the BV 107-II, commonly referred to as simply the "Vertol".

Development


Piasecki Helicopter was a pioneering developer of tandem-rotor helicopters, with the most famous previous helicopter being the H-21 "Flying Banana". Piasecki Helicopter became Vertol
Piasecki Helicopter
The Piasecki Helicopter Corporation was a designer and manufacturer of helicopters located in Philadelphia, Pennsylvania in the late 1940s and throughout the 1950s. The company was renamed Vertol Aircraft Corporation in the mid-1950s...

 in 1955 and work began on a new tandem rotor helicopter designated the Vertol Model 107 or V-107 in 1956. The V-107 prototype had two Lycoming T53
Lycoming T53
-External links:* *...

 turboshaft
Turboshaft
A turboshaft engine is a form of gas turbine which is optimized to produce free turbine shaft power, rather than jet thrust...

 engines, producing 877 shp (640 kW) each. The first flight of the V-107 took place on 22 April 1958. The V-107 was then put through a flight demonstration tour in the US and overseas. In June 1958, the US Army awarded a contract to Vertol for ten production aircraft designated "YHC-1A".

The order was later decreased to three, so the Army could divert funds to the V-114, also a turbine powered tandem, but larger than the V-107. The Army's three YHC-1As were powered by GE-T-58
General Electric T58
|-See also:-References:* and...

 engines. The YHC-1As first flew in August 1959, and were followed by an improved commercial/export model, the 107-II. During 1960, the U.S. Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 (USMC) evolved a requirement for a twin-turbine troop/cargo assault helicopter to replace the piston engine types then in use. Following a design competition, Boeing Vertol was selected to build its model 107M as the HRB-1, early in 1961. Boeing had acquired Vertol in 1960 and renamed the group Boeing Vertol
Boeing Helicopters
Boeing Rotorcraft Systems is a US aircraft manufacturer, now part of Boeing Defense, Space & Security...

.

The helicopter was first procured in 1961 to meet the medium-lift requirements of the Marine Corps. Its first flight in August 1962 was followed by a change in designation to CH-46A. Fleet introduction of CH-46As with the Marines and the Navy's UH-46As in November 1964. The UH-46A variant was modified for use in the vertical replenishment role. The CH-46A was equipped with a pair of T58-GE8-8B turboshaft engines rated at 1,250 shp (930 kW) each and could carry 17 passengers or 4,000 pounds (1,815 kg) of cargo.

Production of the improved CH-46D followed with deliveries beginning in 1966. Its improvements included modified rotor blades and more powerful T58-GE-10 turboshaft engines rated at 1400 shp each. The increased power allowed the D-model to carry 25 troop or 7000 pounds (3,175.1 kg) of cargo. Along with the USMC CH-46Ds, the Navy received a small number of UH-46Ds for ship resupply. Also, approximately 33 CH-46As were upgraded to CH-46Ds.

The Marines also received CH-46Fs from 1968 to 1971. The F-model retained the D-model's T58-GE-10 engines but revised the avionics and included other modifications. The CH-46F was the final production model. The Sea Knight has undergone upgrades and modifications. Most USMC Sea Knights were upgraded to CH-46E standard. The CH-46E features fiberglass rotor blades, airframe reinforcement, and further uprated T58-GE-16 engines producing 1870 shp each. Some CH-46Es have been given doubled fuel capacity. The Dynamic Component Upgrade (DCU) incorporated starting in the mid-1990s provides for increased capabilities through strengthened drive systems and rotor controls.

The commercial variant, the BV 107-II, was first ordered by New York Airways
New York Airways
New York Airways was a helicopter airline in the New York City area. Founded in 1949 as a mail and cargo carrier, on July 9, 1953 it became the first scheduled helicopter airline to carry passengers in the United States...

 in 1960. They took delivery of their first three aircraft, configured for 25 passengers, in July 1962. In 1965, Boeing Vertol sold the manufacturing rights of the 107 to Kawasaki Heavy Industries
Kawasaki Heavy Industries
is an international corporation based in Japan. It has headquarters in both Chūō-ku, Kobe and Minato, Tokyo.The company is named after its founder Shōzō Kawasaki and has no connection with the city of Kawasaki, Kanagawa....

. Under this arrangement, all Model 107 civilian and military aircraft built in Japan are known as KV 107.

On 15 December 2006, Columbia Helicopters, Inc acquired the type certificate
Type certificate
A Type Certificate, is awarded by aviation regulating bodies to aerospace manufacturers after it has been established that the particular design of a civil aircraft, engine, or propeller has fulfilled the regulating bodies' current prevailing airworthiness requirements for the safe conduct of...

 for the Boeing Vertol 107-II, and is in the process of acquiring a Production Certificate from the FAA. Plans for actual production of the aircraft have not been announced.

Design



The CH-46 has tandem contrarotating rotors powered by two GE T58
General Electric T58
|-See also:-References:* and...

 turboshaft engines. The engines are mounted on each side of the rear rotor pedestal with a driveshaft to the forward rotor. The engines are coupled so either could power both rotors in an emergency. The rotors feature three blades and can be folded for on-ship operations.

The CH-46 has a cargo bay with a rear loading ramp that could be removed or left open in flight for extended cargo or for parachute drops. An internal winch is mounted in the forward cabin and can be used to pull external cargo on pallets into the aircraft via the ramp and rollers. A belly sling hook (cargo hook) which is usually rated at 10000 lb (4,535.9 kg). could be attached for carrying external cargo. Although the hook is rated at 10000 lb (4,535.9 kg)., the limited power produced by the engines preclude the lifting of such weight. It usually has a crew of three, but can accommodate a larger crew depending on mission specifics. For example, a Search and Rescue variant will usually carry a crew of five (Pilot, Co-Pilot, Crew Chief, Swimmer, and Medic) to facilitate all aspects of such a mission. A pintle-mounted 0.50 in (12.7 mm) Browning machine gun is mounted on each side of the helicopter for self-defense. Service in southeast Asia resulted in the addition of armor with the guns.

The CH-46 has fixed tricycle landing gear, with twin wheels on all three units. The gear configuration causes a nose-up stance to facilitate cargo loading and unloading. The main gear are fitted in rear sponsons that also contain fuel tanks with a total capacity of 350 US gallons (1,438 L).

Military


Known colloquially as the "Phrog", and used in all Marine combat and peacetime environments since its introduction. Still regularly flown by the Marine Corps, its longevity as a reliable airframe has led to such mantras as "phrogs phorever" and "never trust a helicopter under 30".

CH-46E Sea Knights were used by the USMC during its 2003 invasion of Iraq
2003 invasion of Iraq
The 2003 invasion of Iraq , was the start of the conflict known as the Iraq War, or Operation Iraqi Freedom, in which a combined force of troops from the United States, the United Kingdom, Australia and Poland invaded Iraq and toppled the regime of Saddam Hussein in 21 days of major combat operations...

. CH-46Es transported personnel, brought supplies to forward arming and refueling points (FARP), carried ammunition and various tasks. Marine CH-46Es and CH-53Es carried US Army Rangers and Special Operations troops in a mission to extract captured Army Private Jessica Lynch
Jessica Lynch
Jessica Dawn Lynch is a former Private First Class in the United States Army Quartermaster Corps. Lynch served in Iraq during the 2003 invasion by U.S. and allied forces. On March 23, 2003 she was injured and captured by Iraqi forces but was recovered on April 1 by U.S...

 from an Iraqi hospital on 1 April 2003.

While the United States Navy retired the airframe on September 24, 2004, replacing it with the MH-60S Knighthawk
SH-60 Seahawk
The Sikorsky SH-60/MH-60 Seahawk is a twin turboshaft engine, multi-mission United States Navy helicopter based on the United States Army UH-60 Black Hawk and a member of the Sikorsky S-70 family. The most significant airframe modification is a hinged tail to reduce its footprint aboard ships.The...

, the Marine Corps plans to maintain its fleet until the MV-22
V-22 Osprey
The Bell Boeing V-22 Osprey is an American multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing , and short takeoff and landing capability...

 is fully fielded. In March 2006 Marine Medium Helicopter Squadron 263 (HMM-263) was deactivated and redesignated VMM-263
VMM-263
Marine Medium Tiltrotor Squadron 263 is a United States Marine Corps tiltrotor squadron consisting of MV-22B Osprey transport aircraft...

 to serve as the first MV-22 squadron. The replacement process is expected to continue through the other medium helicopter squadrons into 2014.

Civilian


The Civilian version, the BV 107-II Vertol was developed prior to the military CH-46, and was operated commercially by New York Airways
New York Airways
New York Airways was a helicopter airline in the New York City area. Founded in 1949 as a mail and cargo carrier, on July 9, 1953 it became the first scheduled helicopter airline to carry passengers in the United States...

, Pan American World Airways
Pan American World Airways
Pan American World Airways, commonly known as Pan Am, was the principal and largest international air carrier in the United States from 1927 until its collapse on December 4, 1991...

 and currently solely by Columbia Helicopters
Columbia Helicopters
Columbia Helicopters, Incorporated, or CHI, is an aircraft manufacturing and operator company based in Aurora, Oregon, United States. They are known for operating tandem rotor helicopters; in present times, exclusively the Boeing Vertol 107 and Boeing 234. These helicopters are used in...

. As of 15 December 2006 Columbia Helicopters has purchased the Type certificate
Type certificate
A Type Certificate, is awarded by aviation regulating bodies to aerospace manufacturers after it has been established that the particular design of a civil aircraft, engine, or propeller has fulfilled the regulating bodies' current prevailing airworthiness requirements for the safe conduct of...

 of the Model 107 from Boeing. Currently the company is seeking FAA issuance of a Production Certificate to produce parts with eventual issuance of a PC to produce aircraft.

US versions




Total U.S. H-46 production amounted to 525, ending in 1971.
Model 107 : Company model number for basic prototype, 1 built.
Model 107-II : Commercial airline helicopter. All subsequent commercial aircraft were produced as BV 107-II-2, 2 built as Boeing Vertol prototypes, 5 sold to New York Airways, 10 supplied to Kawasaki as sub-assemblies or as parts.
Model 107M : Company model number for military transport of BV-107/II-2 for the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

.
YHC-1A : Vertol Model 107 for test and evaluation by the United States Army
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

. Adopted by the United States Marine Corps
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

 as the HRB-1. Later redesignated YCH-46C, 3 built.
HRB-1 : Original designation before being renamed as CH-46A before delivery under the 1962 United States Tri-Service aircraft designation system
1962 United States Tri-Service aircraft designation system
The 1962 United States Tri-Service aircraft designation system is a unified designation system introduced by the United States Department of Defense on 18 September 1962 for all the U.S. military aircraft. Prior to this date, each armed service used their own nomenclature system...

.

CH-46A : Medium-lift assault and cargo transport and SAR helicopter for the USMC
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

, fitted with two 1,250 shp (935 kW) General Electric T58-GE-8 turboshaft engines. Previously designated HRB-1. 160 built for USMC, 1 static airframe.
UH-46A : Medium-lift utility transport helicopter for the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

. Similar to the CH-46A. 14 built.
HH-46A : Approximately 50 CH-46As were converted into SAR helicopters for the United States Navy base rescue role.
RH-46A : Planned conversion of CH-46As into minesweeping helicopters for the US Navy, none converted. Nine SH-3As were converted to the RH-3A configuration instead.
UH-46B : Development of the CH-46A to specification HX/H2 for the United States Air Force
United States Air Force
The United States Air Force is the aerial warfare service branch of the United States Armed Forces and one of the American uniformed services. Initially part of the United States Army, the USAF was formed as a separate branch of the military on September 18, 1947 under the National Security Act of...

; 12 ordered in 1962, cancelled and Sikorsky S-61R / CH-3C ordered instead.
YCH-46C :YHC-1A redesignated in 1962. United States Army
United States Army
The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

 retained 2, NASA used 1 for vertical autonomous landing trials (VALT).
CH-46D : Medium-lift assault and cargo transport helicopter for the USMC
United States Marine Corps
The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

, fitted with two 1,400 shp (1,044 kW) General Electric T58-GE-10 turboshaft engines. 266 built.
HH-46D : Surviving HH-46A were upgraded and a small number of UH-46Ds were converted into SAR helicopters. SAR upgrades included the addition of an external rescue hoist near the front crew door and a 18-inch X 18-inch Doppler RADAR system located behind the nose landing gear, which provided for automatic, day/night, over-water hovering capability for at sea rescue. Additionally a "Loud Hailer" was installed opposite the crew entrance door for communicating with downed aviators on the ground or in the water.
UH-46D : Medium-lift utility transport helicopter for the US Navy combat supply role. Similar to the CH-46D. 10 built and one conversion from CH-46D.
CH-46E : Approximately 275 -A, -D, and -F airframes were updated to CH-46E standards with improved avionics, hydraulics, drive train and upgraded T58-GE-16 and T58-GE-16/A engines.
HH-46E : Three CH-46Es were converted into SAR helicopters for Marine Transport Squadron One (VMR-1) at MCAS Cherry Point.
CH-46F : Improved version of CH-46D, electrical distribution, com/nav update BUNO 154845-157726. Last production model in the United States. 174 built, later reverted to CH-46E.
VH-46F : Unofficial designation of standard CH-46F used by HMX-1 as VIP support transport helicopter.

CH-46X : Replacement helicopter based on the Boeing Model 360
Boeing Model 360
-External links:* * * , NASA, March 1989, Retrieved Dec 12, 2008*...

, this Advance Technology Demonstrator from the 1980s never entered production. The aircraft relied heavily on composites for its construction and had a beefier drive train to handle the twin Avco-Lycoming AL5512 engines (4,200 shp).
XH-49 : Original designation of UH-46B.

Canadian versions


CH-113 Labrador : Search and rescue version of the Model 107-II-9 for the Royal Canadian Air Force.
CH-113A Voyageur : Assault and utility transport version of the Model 107-II-28 for the Canadian Army. Later converted to CH-113A Labrador when the Canadian Forces acquired the CH-47 Chinook.

Swedish versions


HKP 4A : Boeing Vertol 107-II-14, used originally by Air Force for SAR, 10 built.
HKP 4B : Boeing Vertol 107-II-15, mine-layer/ASW/SAR helicopter for Navy, three built and one conversion from Boeing-Vertol civil prototype.
HKP 4C : Kawasaki KV-107-II-16, advanced mine-layer/ASW/SAR helicopter for Navy,eight built.
HKP 4D : Rebuilt HKP 4A for Navy as SAR/ASW helicopter, four conversions.

Japanese versions



KV-107II-1 (CT58-110-1)
Utility transport version, 1 built from Boeing supplied kits.

KV-107II-2 (CT58-110-1)
Commercial airline version, 9 built from Boeing supplied kits.

KV-107IIA-2 (CT58-140-1)
Improved version of the KV-107/II-2, 3 built.

KV-107II-3 (CT58-110-1)
Minesweeping version for the JMSDF
Japan Maritime Self-Defense Force
The , or JMSDF, is the naval branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. It was formed following the dissolution of the Imperial Japanese Navy after World War II....

, 2 built.

KV-107IIA-3 (CT58-IHI-10-M1)
Uprated version of the KV-107/II-3, 7 built.

KV-107II-4 (CT58-IHI-110-1)
Assault and utility transport version for the JGSDF
Japan Ground Self-Defense Force
The , or JGSDF, is the army of Japan. The largest of the three services of the Japan Self-Defense Forces, the Ground Self-Defense Force operates under the command of the chief of the ground staff, based in the city of Ichigaya, Tokyo. The present chief of ground staff is General Yoshifumi Hibako...

, 41 built.

KV-107II-4A (CT58-IHI-110-1)
VIP version of the KV-107/II-4, 1 built.

KV-107IIA-4 (CT58-IHI-140-1)
Uprated version of the KV-107/II-4, 18 built.

KV-107II-5 (CT58-IHI-110-1)
Long-range SAR version for the JASDF
Japan Air Self-Defense Force
The , or JASDF, is the aviation branch of the Japan Self-Defense Forces responsible for the defense of Japanese airspace and other aerospace operations. The JASDF carries out combat air patrols around Japan, while also maintaining an extensive network of ground and air early warning radar systems...

, 17 built.

KV-107IIA-5 (CT58-IHI-104-1)
Uprated version of the KV-107II-5, 35 built.

KV-107II-7 (CT58-110-1)
VIP transport version, 1 built.

KV-107II-16
HKP 4C for Swedish Navy
Swedish Navy
The Royal Swedish Navy is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet – as well as marine units, the so-called Amphibious Corps .In Swedish, vessels of the Swedish Navy are given the prefix "HMS," short for Hans/Hennes...

. Powered by Rolls-Royce Gnome
Rolls-Royce Gnome
|-See also:-References:NotesBibliography* Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9-External links:*...

 H.1200 turboshaft engines, 8 built.

KV-107IIA-17 (CT58-140-1)
Long-range transport version for the Tokyo Metropolitan Police Department, 1 built.

KV-107IIA-SM-1 (CT58-IHI-140-1M1)
Firefighting helicopter
Helitack
Helitack refers to "helicopter-delivered fire resources", and is the system of managing and using helicopters and their crews to perform aerial firefighting and other firefighting duties, primarily initial attack on wildfires...

 for Saudi Arabia
Saudi Arabia
The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

, 7 built.

KV-107IIA-SM-2 (CT58-IHI-140-1M1)
Aeromedical and rescue helicopter for Saudi Arabia, 4 built.

KV-107IIA-SM-3 (CT58-IHI-140-1M1)
VIP transport helicopter for Saudi Arabia, 2 built.

KV-107IIA-SM-4 (CT58-IHI-140-1M1)
Air ambulance helicopter for Saudi Arabia, 3 built.

Military operators



  • Ministry of Interior
    Ministry of Interior (Saudi Arabia)
    The Ministry of Interior is the responsible authority for national security of Saudi Arabia, Including Police divisions, Rescue and Civil Defense.-Aircraft inventory:! style="text-align: left; background: #aacccc;"|Aircraft...

    : General Civil Defence Agency (GCDA)

  • United States Marine Corps
    United States Marine Corps
    The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

    • VMR-1
      VMR-1
      Marine Transport Squadron 1 is a light transport aircraft squadron of the United States Marine Corps. Also known as the "Roadrunners", the squadron is based at Marine Corps Air Station Cherry Point and falls under Headquarters and Headquarters Squadron...

    • HMM-161 1966–2009
    • HMM-162 1965–2005
    • HMM-163
      HMM-163
      Marine Medium Helicopter Squadron 163 is a United States Marine Corps helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

    • HMM-165
      HMM-165
      Marine Medium Tilt Rotor Squadron 165 is a United States Marine Corps Tilt-rotor squadron consisting of MV-22B Osprey transport aircraft...

    • HMM-166 1986–2010
    • HMM-261 1966–2008
    • HMM-262
      HMM-262
      Marine Medium Helicopter Squadron 262 is a United States Marine Corps helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

    • HMM-263
      VMM-263
      Marine Medium Tiltrotor Squadron 263 is a United States Marine Corps tiltrotor squadron consisting of MV-22B Osprey transport aircraft...

       1967–2005
    • HMM-264 1968–2009
    • HMM-265
      HMM-265
      Marine Medium Helicopter Squadron 265 is a United States Marine Corps helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

       1965–
    • HMM-266 1983–2006
    • HMM-268
      HMM-268
      Marine Medium Helicopter Squadron 268 is a United States Marine Corps helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

       1979–
    • HMM-364
      HMM-364
      Marine Medium Helicopter Squadron 364 is a United States Marine Corps helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

       1967–
    • HMM-365 1967–2009
    • HMM-764
      HMM-764
      Marine Medium Helicopter Squadron 764 is a United States Marine Corps Reserve medium helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

    • HMM-774
      HMM-774
      Marine Medium Helicopter Squadron 774 is a United States Marine Corps medium helicopter squadron consisting of CH-46E Sea Knight transport helicopters...

       1970–

Civilian operators


  • Helifor Canada Corp (under lease from Columbia Helicopters
    Columbia Helicopters
    Columbia Helicopters, Incorporated, or CHI, is an aircraft manufacturing and operator company based in Aurora, Oregon, United States. They are known for operating tandem rotor helicopters; in present times, exclusively the Boeing Vertol 107 and Boeing 234. These helicopters are used in...

    )

  • Columbia Helicopters
    Columbia Helicopters
    Columbia Helicopters, Incorporated, or CHI, is an aircraft manufacturing and operator company based in Aurora, Oregon, United States. They are known for operating tandem rotor helicopters; in present times, exclusively the Boeing Vertol 107 and Boeing 234. These helicopters are used in...


Former operators


  • Kawasaki Helicopter System, LTD
  • Tokyo Metropolitan Police Department
    Tokyo Metropolitan Police Department
    The Tokyo Metropolitan Police Department serves as the police force for the entire Tokyo metropolis. Founded in 1874, it is headed by a superintendent general, who is appointed by the National Public Safety Commission and approved by the prime minister.The Metropolitan Police, with a staff of more...

  • Japan Air Self-Defense Force
    Japan Air Self-Defense Force
    The , or JASDF, is the aviation branch of the Japan Self-Defense Forces responsible for the defense of Japanese airspace and other aerospace operations. The JASDF carries out combat air patrols around Japan, while also maintaining an extensive network of ground and air early warning radar systems...

  • Japan Ground Self-Defense Force
    Japan Ground Self-Defense Force
    The , or JGSDF, is the army of Japan. The largest of the three services of the Japan Self-Defense Forces, the Ground Self-Defense Force operates under the command of the chief of the ground staff, based in the city of Ichigaya, Tokyo. The present chief of ground staff is General Yoshifumi Hibako...

  • Japan Maritime Self-Defense Force
    Japan Maritime Self-Defense Force
    The , or JMSDF, is the naval branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. It was formed following the dissolution of the Imperial Japanese Navy after World War II....


(All in Storage)
  • Swedish Armed Forces
    Swedish Armed Forces
    The Swedish Armed Forces is a Swedish Government Agency responsible for the operation of the armed forces of the Realm. The primary task of the agency is to train, organize and to deploy military forces, domestically and abroad, while maintaining the long-term ability to defend the Realm in the...

  • Swedish Air Force
    Swedish Air Force
    The Swedish Air Force is the air force branch of the Swedish Armed Forces.-History:The Swedish Air Force was created on July 1, 1926 when the aircraft units of the Army and Navy were merged. Because of the escalating international tension during the 1930s the Air Force was reorganized and expanded...

  • Swedish Navy
    Swedish Navy
    The Royal Swedish Navy is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet – as well as marine units, the so-called Amphibious Corps .In Swedish, vessels of the Swedish Navy are given the prefix "HMS," short for Hans/Hennes...



  • New York Airways
    New York Airways
    New York Airways was a helicopter airline in the New York City area. Founded in 1949 as a mail and cargo carrier, on July 9, 1953 it became the first scheduled helicopter airline to carry passengers in the United States...

  • Pan Am
    Pan American World Airways
    Pan American World Airways, commonly known as Pan Am, was the principal and largest international air carrier in the United States from 1927 until its collapse on December 4, 1991...

  • United States Navy
    United States Navy
    The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...


Notable accidents and incidents

  • On December 9, 1999, a CH-46D Sea Knight, Naval Bureau Number 154790 assigned to Marine Medium Helicopter Squadron 166 (HMM-166) crashed during a boarding exercise off the coast of San Diego, California, killing 7 U.S. Marines. The pilot landed the CH-46D short on the deck of the USNS Pecos, causing the left rear tire and strut to become entangled in the safety netting at the back of the ship. The pilot increased power to pull up, unaware of the entangled landing gear. The landing gear failed to break free, causing the helicopter to nose over and plunge into the ocean, rolled over, and sank. Eleven marines were freed themselves of the wreckage and survived. However, 7 marines perished when the helicopter sank. The Navy instituted helicopter evacuation training for all U.S. Marines shortly after the accident.

Specifications (CH-46)


Aircraft on display


  • Canadian Warplane Heritage Museum
    Canadian Warplane Heritage Museum
    The Canadian Warplane Heritage Museum is a Canadian aviation museum located at the John C. Munro Hamilton International Airport near Hamilton, Ontario. The museum has 36 military jets, propeller-driven aircraft and helicopters on display....

    , Canada
  • Kakamigahara Aerospace Science Museum, Kakamigahara, Gifu
    Gifu Prefecture
    is a prefecture located in the Chūbu region of central Japan. Its capital is the city of Gifu.Located in the center of Japan, it has long played an important part as the crossroads of Japan, connecting the east to the west through such routes as the Nakasendō...

    , Japan
  • Kawasaki Vertol 107-II - Kawasaki Good Times World, within Kobe Maritime Museum
    Kobe Maritime Museum
    Kobe Maritime Museum is a museum in Kobe, Japan focusing on the history of Japanese shipping and Kobe harbor.One of the exhibits is the Yamato 1.-External links:*...

    , Kobe
    Kobe
    , pronounced , is the fifth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately west of Osaka...

    , Hyōgo
    Hyogo Prefecture
    is a prefecture of Japan located in the Kansai region on Honshū island. The capital is Kobe.The prefecture's name was previously alternately spelled as Hiogo.- History :...

    , Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

    .
  • Japan Air Self Defense Force Hamamatsu Air Base Publication Center
    Hamamatsu Air Base
    is a Japan Air Self-Defense Force base located north of the city of Hamamatsu, Shizuoka Prefecture, in central Japan.-History:Hamamatsu Air Base was established in 1925 as an Imperial Japanese Army Air Force base to be home to the newly-formed IJAAF No.7 Air Regiment. In 1933, it was designated as...

    , Hamamatsu, Shizuoka
    Shizuoka Prefecture
    is a prefecture of Japan located in the Chūbu region on Honshu island. The capital is the city of Shizuoka.- History :Shizuoka prefecture was formed from the former Tōtōmi, Suruga and Izu provinces.The area was the home of the first Tokugawa Shogun...

    , Japan
  • Aeroseum, Gothenburg, Sweden - Boeing Vertol/Kawasaki KV-107-II (CH-46), Hkp 4C, c/n 4093, Fv 04072 "72"
  • Carolinas Aviation Museum
    Carolinas Aviation Museum
    The Carolinas Aviation Museum is an aviation museum on the grounds of Charlotte/Douglas International Airport in Charlotte, North Carolina. The mission of the Museum is to educate the public about the importance of aviation to our society and inspire the next generation to excel academically in the...

    , Charlotte
    Charlotte, North Carolina
    Charlotte is the largest city in the U.S. state of North Carolina and the seat of Mecklenburg County. In 2010, Charlotte's population according to the US Census Bureau was 731,424, making it the 17th largest city in the United States based on population. The Charlotte metropolitan area had a 2009...

    , North Carolina
    North Carolina
    North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

    , USA has Medal of Honor Mike Clausen's CH-46
  • Flying Leatherneck Aviation Museum
    Flying Leatherneck Aviation Museum
    The Flying Leatherneck Aviation Museum is located at Building T, 4203 Anderson Avenue, Marine Corps Air Station Miramar, San Diego, California. The museum contains exhibits and artifacts relating to the history and legacy of United States Marine Corps Aviation...

    , San Diego, California
    California
    California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

    , USA has "Lady Ace 09" of HMM-165
    HMM-165
    Marine Medium Tilt Rotor Squadron 165 is a United States Marine Corps Tilt-rotor squadron consisting of MV-22B Osprey transport aircraft...

    . The CH-46 took part in Operation Frequent Wind
    Operation Frequent Wind
    Operation Frequent Wind was the evacuation by helicopter of American civilians and 'at-risk' Vietnamese from Saigon, South Vietnam, on 29–30 April 1975 during the last days of the Vietnam War...

     and was used to evacuate Ambassador Graham Martin
    Graham Martin
    Graham Anderson Martin succeeded Ellsworth Bunker as United States Ambassador to South Vietnam in 1973. He would be the last person to hold that position. Martin previously served as ambassador to Thailand and as U.S. representative to SEATO....

    , the last United States Ambassador to South Vietnam
    United States Ambassador to South Vietnam
    After World War II, France attempted to regain control of Vietnam, which they had lost to Japan in 1940. Following the First Indochina War, the country was split into two parts, the north and the south. The southern part was named The State of Vietnam under the leadership of Bảo Đại...

     from the United States Embassy, Saigon
    United States Embassy, Saigon
    The United States Embassy in Saigon was first established in May 1950, and moved into a new building on a more secure compound in 1967. The embassy was the scene of a number of significant events of the Vietnam War, most notably the Vietcong attack during the Tet Offensive which helped turn...

     on 30 April 1975.
  • National Museum of Naval Aviation
    National Museum of Naval Aviation
    The National Museum of Naval Aviation is a military and aerospace museum located at Naval Air Station Pensacola, Florida. The museum opened in 1962....

  • National Museum of the Marine Corps
    National Museum of the Marine Corps
    The National Museum of the Marine Corps is the historical museum of the United States Marine Corps. It is located in Quantico, Virginia and is open to the public with free admission. The museum had its grand opening on November 10, 2006 and is now the number one tourist attraction in Virginia,...

  • USS Midway Museum in San Diego, California

See also


External links