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 (R66)Only with: R44/R44 II with main rotor blade P/N C016-7 Revision AA through AE installed; R66 with main rotor blade P/N F016-2 Revision A through E 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 (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 · exhaust duct · crackedFeb 15, 2019
CUSTOMER REPORTED ENGINE EXHAUST P/N: F169-1 WAS CRACKED.
From FAA Service Difficulty Reports; matched by N-number and serial number.