Is AD 2005-18-16 a recurring Airworthiness Directive?

No — AD 2005-18-16 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2005-18-16 apply to?

AD 2005-18-16 applies to General Electric — models CF34-3A1, CF34. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-18-16

one-time

Official AD 2005-18-16 · FR doc 05-17761 · 2005-09-08 · turbine engine

Airworthiness Directives; General Electric Company CF34-3A1 Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CF34-3A1 turbofan engines installed on Bombardier series Regional Jets with certain high pressure turbine (HPT) rotating components installed. This AD requires removal from service of certain HPT components prior to the parts exceeding their designated life limits. This AD results from the discovery that the manufacturer removed certain part numbers of HPT rotating components from the Life Limits section of the CF34 Engine Manual, SEI-756. The effect of this manual change was the removal of life limits from certain components that are eligible for installation in GE CF34-3A1 engines. We are issuing this AD to impose life limits on these HPT rotating components to prevent low cycle fatigue (LCF) cracking and failure of those components, which could result in uncontained engine failure and damage to the airplane.

Which aircraft AD 2005-18-16 applies to

MakesGeneral Electric

ModelsCF34-3A1, CF34

Part-conditional — 6078T90P01, 6017T00P05, 4027T15P03, 6078T93P01, 6078T93P02, 5041T70P03, 5023T97P03, 6078T94P01.

Applies only to engines installed on Bombardier Regional Jet Model CL-600-2B19 (Regional Jet Series 100 and 440) airplanes with one or more of the listed HPT rotating components installed.

Whether AD 2005-18-16 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 2005-18-16 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.