Airworthiness Directive 2018-01228
one-timeAirworthiness Directives; Honeywell International Inc. Turboprop and Turboshaft Engines
What this AD requires
We are adopting a new airworthiness directive (AD) for certain Honeywell International Inc. (Honeywell) TPE331 turboprop and TSE331 turboshaft engines. This AD was prompted by reports that combustion chamber case assemblies have cracked and ruptured. This AD requires inspection of the affected combustion chamber case assembly, replacement of those assemblies found cracked, and removal of affected assemblies on certain TPE331 and TSE331 engines. We are issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2018-01228 applies to
Applies to engines with combustion chamber case assemblies, part numbers 869728-x, 893973-x, 3101668-x, and 3102613-x (x denotes any dash number), installed. Includes TPE331 turboprop and TSE331-3U turboshaft engine models.
Whether AD 2018-01228 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.