Airworthiness Directive 04-10241
recurringAirworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal Inc., Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) TPE331-10 and -11 Series Turboprop Engines
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. (formerly AlliedSignal Inc., Garrett Turbine Engine Company, and AiResearch Manufacturing Company of Arizona) (Honeywell) TPE331-10 and -11 series turboprop engines with certain part numbers (P/Ns) and serial numbers (SNs) of first stage turbine disks. This AD requires initial and repetitive fluorescent penetrant inspections (FPIs) and eddy current inspections (ECIs) of the affected first stage turbine disks. This AD results from a report of a first stage turbine disk found cracked at the disk bore. The crack originated from a localized; melt related, low-alloy area of the disk. We are issuing this AD to prevent cracked first stage turbine disks from causing uncontained disk separation, resulting in engine damage and shutdown and damage to the airplane.
Which aircraft AD 04-10241 applies to
Applies only to engines with first stage turbine disk P/N 3101520-1 or P/N 3107079-1 that have serial numbers listed in Table 1 of Honeywell Alert Service Bulletin (ASB) TPE331-A72-2102, dated March 28, 2002 (specific serial numbers not enumerated in this excerpt of the applicability text). These engines are installed on, but not limited to, Mitsubishi MU-2B series, CASA C-212 series, Fairchild SA226 series (Swearingen Merlin and Metro series), Twin Commander 680/690 series (Jetprop Commander), Dornier 228 series, Beech 18/45 series (including Models JRB-6, 3N, 3TM, B100), Cessna Model 441 Conquest, and Jetstream 3201 series airplanes.
Whether AD 04-10241 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.