AD 82-22-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-100C Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-200 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727-200F Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727 Series | BOEING Model 727 Airplanes |
| aircraft | The Boeing Company | 727C Series | BOEING Model 727 Airplanes |
Unsafe Condition
Fatigue failure of the Decoto leading edge actuator could cause inadvertent leading edge slat extension.
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Required Actions
Accomplish one of the following: inspect actuator pistons via magnetic particle inspection and reinspect every 15,000 landings if uncracked; replace with redesigned piston P/N 7-100433-3; perform hydraulic leakage checks every 2400 landings; or rework existing pistons per approved procedure for 40,000 landings. After 40,000 landings on reworked pistons, options B or C must be used.
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Compliance Time
prior to the accumulation of 30,000 landings on the actuator, or within the next 1500 landings, whichever comes later
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Affected Aircraft
Boeing Model 727 airplanes equipped with Decoto Leading Edge Actuators, P/N 10-61792-1, -2, -4, -5, -7, or -8
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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