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Airworthiness Directive 2023-24-04

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Official AD 2023-24-04 · FR doc 2023-26636 · 2023-12-06 · turbine engine

Airworthiness Directives; Honeywell International Inc. Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Honeywell International Inc. (Honeywell) Model AS907-1-1A and AS907-2- 1G engines. This AD was prompted by reports of compressor surge, including a dual engine compressor surge, during takeoff climb out through a steep temperature inversion, causing a loss of engine thrust control. This AD requires either the replacement of a certain electronic control unit (ECU) software version installed on AS907-1-1A engines with updated software or the replacement of certain ECUs installed on AS907-1-1A engines with ECUs eligible for installation. This AD also requires the replacement of certain ECUs installed on AS907-2-1G engines. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2023-24-04 applies to

MakesHoneywell International Inc.
ModelsAS907-1-1A, AS907-2-1G, AS907

Whether AD 2023-24-04 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2023-24-04 complied with on your aircraft?

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.