Aircraft on ground
Encyclopedia
"Aircraft on Ground" is a term in aviation
Aviation
Aviation is the design, development, production, operation, and use of aircraft, especially heavier-than-air aircraft. Aviation is derived from avis, the Latin word for bird.-History:...

 maintenance indicating that a problem is serious enough to prevent an 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...

 from flying. Generally there is a rush to acquire the parts to put the aircraft (A/C) back into service, and prevent further delays or cancellations of the planned itinerary. AOG applies to any aviation materials or spare parts that are needed immediately for an aircraft to return to service. AOG suppliers refer qualified personnel and dispatch the parts required to repair the aircraft for an immediate return to service. AOG also is used to describe critical shipments for parts or materials for aircraft "out of service" or OTS at a location.

Mitigation of AOG status:
When an aircraft "goes AOG" and materials required are not on hand, parts and personnel must be driven, flown, or sailed to the location of the "grounded A/C". Usually the problem is escalated through an internal AOG Desk, then the Manufacturer's AOG Desk, and finally competitors' AOG desks. All major air carriers have an "AOG Desk". This desk is manned 24/7 by personnel trained in purchasing, hazardous materials shipping, and parts manufacturing / acquisition processes.

AOG personnel are trained to "loan" or "borrow" spare parts from other air carriers, per FAA/EASA etc regulations. AOG personnel work in conjunction with their carriers' maintenance operations department, supporting aircraft maintenance with all parts or material requests very rapidly.
There are two ways of achieving this: by local engineering support or by support flown out base.

Manufacturer AOG Desks

Freight

Aircraft Batteries:

Concorde Aircraft Batteries

Aircraft Engines:

GE Aircraft Engines

Pratt & Whitney Aircraft Engines

Aircraft Manufacturers:

http://www.boeing.com/commercial/ams/mss/brochures/airplane_on_ground.html

Piper, Cessna, Lockheed, and Learjet had no AOG info posted at this time on their sites.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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