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The D check, sometimes known as a "heavy maintenance visit" (HMV), [10] is by far the most comprehensive and demanding check for an airplane. This check occurs approximately every 6-10 years. [9] It is a check that more or less takes the entire airplane apart for inspection and overhaul.
Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul.
In 2017, of the $70 billion spent by airlines on maintenance, repair and overhaul (MRO), 31% were for engines, 27% for components, 24% for line maintenance, 10% for modifications and 8% for the airframe; 70% were for mature airliners (Airbus A320 and A330, Boeing 777 and 737NG), 23% were for “sunset” aircraft (McDonnell Douglas MD-80 ...
In aviation safety, parts departing aircraft or parts detached from aeroplanes (PDA), also known as objects falling off airplanes (OFA), things falling off aircraft (TFOA), and other analogous variations, can range from small fasteners like screws and rivets up to major sub-assemblies like hatch covers and doors. [1]
Planes can withstand the weather. Next time you’re flying through turbulence, look out the window at the wing. You’ll notice it flexing. It’s supposed to do that.
It also determined special aspects of aircraft performance such as stall speed (e.g., for single engine airplanes – not more than 61 knots), rate of climb (not less than 300 ft/min), take-off speed (not less than 1.2 x V S1), and weight of each pilot and passenger (170 lb for airplanes in the normal and commuter categories, and 190 lb for ...
Aircraft are often launched from the carrier in a somewhat random order based on their deck positioning prior to launch. Therefore, aircraft working together on the same mission must rendezvous airborne. This is accomplished at a predetermined location, usually at the in-flight refueling tanker, overhead the carrier, or at an en route location.
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