Is AD 99-4017 a recurring Airworthiness Directive?

No — AD 99-4017 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-4017 apply to?

AD 99-4017 applies to Allison Engine Company. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-4017

one-time

AD 99-4017 · 1999-02-19 · turbine engine

Airworthiness Directives; Allison Engine Company Model AE 3007A and AE 3007A1/1 Turbofan Engines; Correction

What this AD requires

This document makes a correction to Airworthiness Directive (AD) 99-03-03 applicable to Allison Engine Company Model AE 3007A turbofan engines that was published in the Federal Register on January 29, 1999 (64 FR 4525). A full authority digital electronic control (FADEC) assembly part number (P/N) in the compliance section is incorrect. This document corrects that P/N. In all other respects, the original document remains the same.

Which aircraft AD 99-4017 applies to

MakesAllison Engine Company

Whether AD 99-4017 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 99-4017 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.