These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
Teledyne Continental Motors (TCM) IO-520, TSIO-520, and IO-550 Series Reciprocating…
Sep 9, 2009
Engine (IO 520 SERIES)Only with: SAP investment cast cylinder assemblies P/Ns SA52000-A1, SA52000-A20P, SA52000-A21P, SA52000-A22P, SA52000-A23P, SA55000-A1, or SA55000-A20P installed.
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (4)
Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.
Reciprocating engine · piston ring · stuckJan 8, 2024
BETWEEN 24 & 49 HRS OIL CONSUMPTION WAS 8.7 HRS/QT. OIL CONSUMPTION WAS LOWEST AT 10 HRS PER QUART AT 240 HRS AND THEN INCREASED. AT 370 HRS IT WAS 6 HRS/QT. AT 513 HOURS WAS 4.4 HRS/QT. AT 567 HRS (100HR INSP) IT WAS 2.1 HRS/QT OVER 50 HOURS BUT WAS INCREASING. SINCE THE 100 HR INSPECTION…
From FAA Service Difficulty Reports; matched by N-number.
Engine fuel and control · pump · leakingMay 6, 2019
DURING A FUEL INJECTION SYSTEM CHECK WITH PRESSURE GAUGES IT WAS NOTED THAT FUEL WAS LEAKING FROM A VENT ON THE BACK SIDE OF THE ENGINE DRIVEN FUEL PUMP JUST BELOW THE LOW PRESSURE RELIEF VALVE ADJUSTMENT SCREW (THIS ADJUSTS THE LOW UNMETERED FUEL PRESSURE). THE LEAKAGE ONLY OCCURRED WHEN THE FUEL…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Flight controls · actuator · defectiveMay 4, 2005
TRIM TAB ACTUATOR IS DEFECTIVE AS RECEIVED. THIS IS A NEW PART. THE CHAIN SPROCKET HAS A BENT TOOTH. LOT NUMBER: 2Q04. THIS IS THE THIRD DEFECTIVE, NEW ACTUATOR WE HAVE RECEIVED IN A ROW. AN (EXPERIENCED) ACTUATOR FROM A STORED AIRCRAFT IS BEING USED TEMPORARILY TO KEEP THIS PLANE FLYING. THE…
From FAA Service Difficulty Reports; matched by N-number and serial number.
DURING ANNUAL INSP, ELEV TRIM TAB FREE PLAY FOUND TO EXCEED LIMITS. EXCESSIVE PLAY LOCATED IN ACT ASSY. NEW ACT INSTALLED. WHILE PERFORMING RIGGING CHK, TAB MOVED TO ITS LIMITS & A SECOND AMT OBSERVING CABLE MVMNT IN TAIL CONE. MOVING TAB BACK TO NEUTRAL & JUST PRIOR TO REACHING IT, A BANG HEARD…
From FAA Service Difficulty Reports; matched by N-number and serial number.