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.
Airframe (414A)Certain serial numbers: 402C 402C0001–402C1020; 414A 414A0001–414A1212. Only with: Equipped with Cessna Multi-Engine Service Kit SK402-47 (Original Issue, Rev A, or Rev B) or nacelle fittings P/Ns 5292029-9, -10, -11, -12, -21, -22, -23, or -24.
Cessna Aircraft Company Models 340A and 414A Airplanes
Dec 21, 1998
Airframe (414A)Certain serial numbers: 340A 215–1817; 414A 1–1212. Only with: Equipped with any WYE tube P/N 9910299-25 or P/N 9910299-26 in the engine exhaust system.
AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.
Service Difficulty Reports (1)
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.
Exhaust · wye pipe · divider brokeApr 25, 1996
THE FLOW DIVIDER IN THE WYE EXHAUST PIPE GOING TO THE TURBO SUPER CHARGER BROKE CAUSING A PIECE OF METAL APPROXIMATELY 1.50 INCHES BY 2.50 INCHES LONG TO ENTER THE EXHAUST HOUSING SIDE OF THE TURBO. THIS LIMITED THE TURBOCHARGER MAX OUTPUT TO 5,000 FEET MSL. NO INTERNAL DAMAGE OF TURBOCHARGER…
From FAA Service Difficulty Reports; matched by N-number and serial number.