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-F)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.
Electrical power · wire · brokenMay 28, 2026
AFTER TAKE-OFF, PILOT SMELLED SMOKE AND LOOKED AT GAGES AND ENGINE OIL TEMP SHOWED "0". PILOT TURNED AROUND AND LANDED. MECHANICS FOUND A LOOSE WIRE ON MAIN BUSS, BROKEN 10 AMP CIRCUIT BREAKER AND BROKEN WIRE AT VOLTAGE REGULATOR. MECHANICS TIGHTENED LOOSE WIRE, REPLACED CIRCUIT BREAKER AND…
From FAA Service Difficulty Reports; matched by N-number and serial number.
Exhaust · muffler · leakingMay 21, 2025
PILOT REPORTED CO DETECTOR INDICATING. MECHANICS FOUND THE RIGHT HAND MUFFLER COUPLING LEAKING. MECHANICS REPLACED THE ATTACHING HARDWARE.
From FAA Service Difficulty Reports; matched by N-number and serial number.
Electrical power · connector · looseApr 17, 2022
PILOT REPORTED ELECTRICAL DISCHARGE. MX PERSONNEL FOUND A LOOSE CONNECTION AT ALTERNATOR. RESECURED LOOSE CONNECTION, OPS CHECK GOOD IAW C207 MM 17-41. ALTERNATOR LAST INSPECTED DURING PHASE 4 INSPECTION AT 7452.6 AFTT, NO DEFECTS NOTED.
From FAA Service Difficulty Reports; matched by N-number and serial number.
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Ignition · magneto · intermittentApr 26, 2005
MAGNETO FAILED DURING FLIGHT. UPON INSPECTION IT WAS DETERMINED THAT THE CONDENSER FAILED TO TAKE A CHARGE. THE SWIVEL TERMINAL ON THE CONTACT POINT SIDE OF THE CONDENSER WAS ROTATED AND THEN THE CONDENSER WAS ABLE TO TAKE A CHARGE. SUSPECT CORROSION AT SWIVEL, RESULTING IN AN OPEN IN THE…
From FAA Service Difficulty Reports; matched by N-number and serial number.