Airworthiness Directive 2001-12-19
one-timeAirworthiness Directives; Turbomeca S.A. Artouste II and Artouste III Series Turboshaft Engines
What this AD requires
This amendment adopts a new airworthiness directive (AD), that is applicable to Turbomeca S.A. Artouste II and Artouste III series turboshaft engines. This amendment requires installation of modification TU 24, TU 167, or TU 164, depending on the specific engine series. These modifications will prevent uncommanded partial closing or total closing of the electrical fuel cock, which will prevent uncommanded in-flight engine shutdown. From the effective date of this AD, and until the modification is installed, this amendment will also limit the duration of the engine operating cycle. This amendment is prompted by reports of unexpected power loss during test flights. The actions specified by this AD are intended to prevent unexpected power loss, which could result in an uncommanded in-flight engine shutdown, autorotation, and forced landing.
Which aircraft AD 2001-12-19 applies to
Limits operating cycle duration to 2 hours until the applicable modification (TU 24 for Artouste II; TU 167 for Artouste III B/B1; TU 164 for Artouste III D) is installed per the respective Turbomeca service bulletins (SB 218 80 0070, SB 218 80 0093 Rev 2, SB 218 80 0098), to prevent unexpected power loss/uncommanded in-flight shutdown.
Whether AD 2001-12-19 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.