Airworthiness Directive · Amendment 39-10251 · Mooney Aircraft Corporation Models M20F, M20J, and M20L Airplanes
Mooney Aircraft Corporation Models M20F, M20J, and M20L Airplanes
The following Models and serial numbered airplanes, certificated in any category. Models Serial numbers M20F............................... All serial numbers. M20J............................... 24-0001 through 24-3381. M20L............................... 26-0001 through 26-0041.
This amendment adopts a new airworthiness directive (AD) that applies to Mooney Aircraft Corporation (Mooney) Models M20F, M20J, and M20L airplanes. This action requires removing the fuel cap retaining lanyard from the fuel filler cap assemblies. A report of lost engine power during flight because of fuel starvation prompted the action. The investigation revealed that the airplane fuel float became trapped by the fuel cap retaining lanyard, keeping the float from following the fuel level. This condition caused the pilot to get a false fuel quantity reading. The actions specified by this AD are intended to prevent loss of engine power and fuel depletion during flight caused by a false fuel gauge reading.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
