Is AD 2005-18-01 a recurring Airworthiness Directive?

No — AD 2005-18-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2005-18-01 apply to?

AD 2005-18-01 applies to General Electric — models CT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7-9B, CT7-9B1, CT7-9B2, CT7. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-18-01

one-time

Official AD 2005-18-01 · FR doc 05-17493 · 2005-09-19 · turboprop engine

Airworthiness Directives; General Electric Company CT7-5, -7, and -9 Series Turboprop Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CT7-5A2, -5A3, -7A, -7A1, -9B, -9B1, and -9B2 turboprop engines, with stage 2 turbine aft cooling plate, part number (P/N) 6064T07P01, 6064T07P02, 6064T07P05, or 6068T36P01 installed. This AD requires a onetime eddy current inspection (ECI) of certain P/N stage 2 turbine aft cooling plate boltholes. This AD results from reports of six stage 2 turbine aft cooling plates found cracked during inspection. We are issuing this AD to prevent stage 2 aft cooling plate separation, resulting in uncontained engine failure and damage to the airplane.

Which aircraft AD 2005-18-01 applies to

MakesGeneral Electric

ModelsCT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7-9B, CT7-9B1, CT7-9B2, CT7

Part-conditional — 6064T07P01, 6064T07P02, 6064T07P05, 6068T36P01.

Applies only to engines with a stage 2 turbine aft cooling plate of the listed part numbers installed.

Whether AD 2005-18-01 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 2005-18-01 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.