Airworthiness Directive E9-19633
one-timeAirworthiness Directives; Honeywell International Inc. TPE331-10 and TPE331-11 Series Turboprop Engines
What this AD requires
The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. TPE331-10 and TPE331-11 series turboprop engines. This AD requires removing certain first stage turbine disks from service. This AD results from a report of an uncontained failure of a first stage turbine disk that had a metallurgical defect. We are issuing this AD to prevent uncontained failure of the first stage turbine disk and damage to the airplane.
Which aircraft AD E9-19633 applies to
Applies only to engines with a first stage turbine disk, P/N 3101520-1 or 3107079-1, bearing one of the specific serial numbers listed installed.
Whether AD E9-19633 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.