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Airworthiness Directive 03-25864

recurring
AD 03-25864 · 2003-10-14 · turbine engine

Airworthiness Directives; General Electric Company CF34-3A1, -3B, and -3B1 Turbofan Engines

What this AD requires

This amendment revises an existing airworthiness directive (AD), that applies to General Electric Company (GE) CF34-3A1, -3B, and -3B1 turbofan engines with scavenge screens part numbers (P/Ns) 4047T95P01 and 5054T86G02 installed in the B-sump oil scavenge system. That AD currently requires initial and repetitive visual inspections and cleaning of the B-sump scavenge screens until a screenless fitting is installed. This amendment requires the same initial and repetitive visual inspections and cleaning of the B-sump scavenge screens until a screenless fitting is installed. This amendment also corrects a typographical error, and introduces a less restrictive terminating action schedule. This amendment is prompted by the need to correct a typographical error and by the need to introduce a less restrictive terminating action schedule. We are issuing this AD to prevent B-sump scavenge screen blockage due to coking which could result in ignition of B-sump oil in the secondary air system, fan drive shaft separation, and uncontained engine failure.

Repetitive inspection. Re-inspect every 200 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 03-25864 applies to

MakesGeneral Electric Company
ModelsCF34
Part-conditional — 4047T95P01, 5054T86G02.

Applicability text is a continuation ('applies to each engine identified in the preceding applicability provision') whose specific engine model list is on a preceding page not captured in this excerpt. Referenced GE Alert Service Bulletins (CF34-AL ASB 79-A0014, CF34-BJ ASB 79-A0015) indicate General Electric CF34 series turbofan engines; concerns B-sump scavenge screen (P/Ns 4047T95P01, 5054T86G02) inspection/cleaning to prevent coking and B-sump oil fire.

Whether AD 03-25864 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 03-25864 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.