Is AD 2021-26-19 a recurring Airworthiness Directive?

No — AD 2021-26-19 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2021-26-19

Q: Which aircraft does AD 2021-26-19 apply to?

AD 2021-26-19 applies to General Electric Company — models CF34-8C5, CF34-8C5B1, CF34-8E2, CF34-8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E6. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2021-26-19 · FR doc 2021-27480 · 2021-12-21 · turbine engine

Airworthiness Directives; General Electric Company Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CF34-8C and CF34-8E model turbofan engines. This AD was prompted by a report of a quality escape during the manufacturing of a high-pressure turbine (HPT) rotor stage 1 disk. This AD requires removing the HPT rotor stage 1 disk from service and replacing the HPT rotor stage 1 disk with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-26-19 applies to

MakesGeneral Electric Company

ModelsCF34-8C5, CF34-8C5B1, CF34-8E2, CF34-8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E6, CF34-8E6A1, CF34

Part-conditional — 4125T22P04.

Applies only to engines with an installed high-pressure turbine (HPT) rotor stage 1 disk, P/N 4125T22P04, having a serial number listed in Figure 1 or Figure 2 to paragraph (c) of this AD.

Whether AD 2021-26-19 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 2021-26-19 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.