Is AD 2004-26-02 a recurring Airworthiness Directive?

No — AD 2004-26-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2004-26-02 apply to?

AD 2004-26-02 applies to General Electric — models CF34-3A, CF34-3A2, CF34-1A, CF34-3A1, CF34-3B, CF34-3B1, CF34. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2004-26-02

one-time

Official AD 2004-26-02 · FR doc 04-27948 · 2004-12-22 · turbine engine

Airworthiness Directives; GE Aircraft Engines (GE) CF34-3A, CF34-3A2, CF34-1A, CF34-3A1, CF34-3B, and CF34-3B1 Series Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for GE CF34-3A, CF34-3A2, CF34-1A, CF34-3A1, CF34-3B, and CF34-3B1 series turbofan engines. This AD requires removal from service of certain high pressure compressor (HPC) forward spools, at the first piece-part level exposure after 6,000 cycles since new (CSN); but not later than 20,000 CSN for CF34-3B engines, and not later than 22,000 CSN for CF34-3A, CF34-3A2, CF34-1A, CF34-3A1, and CF34-3B1 engines. This AD results from an updated low-cycle fatigue (LCF) analysis performed on certain HPC forward spools. We are issuing this AD to prevent LCF cracks and failure of the HPC forward spool, which could result in an uncontained engine failure and damage to the airplane.

Which aircraft AD 2004-26-02 applies to

MakesGeneral Electric

ModelsCF34-3A, CF34-3A2, CF34-1A, CF34-3A1, CF34-3B, CF34-3B1, CF34

Part-conditional — 6078T56P03, 6078T56P04.

Applies only to engines with high pressure compressor (HPC) forward spool, part number 6078T56P03 or 6078T56P04, installed. These engines are installed on, but not limited to, Bombardier Business Jet Model CL-600-2A12 (CL-601), Model CL-600-2B16 (CL-601-3A, CL-601-3R, CL-604), and Regional Jet Model CL-600-2B19 (Series 100 and 440) airplanes.

Whether AD 2004-26-02 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 2004-26-02 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.