Airworthiness Directive 96-04-01

one-time
Official AD 96-04-01 · FR doc 96-4243 · 1996-02-29 · turbine engine

Airworthiness Directives; AlliedSignal Inc. TFE731 Series Turbofan Engines

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to AlliedSignal Inc. (formerly Garrett Engine Division) TFE731 series turbofan engines, that currently requires eddy current inspection of certain fan rotor disks for cracks, and replacement, if necessary, with serviceable parts. This amendment requires reinspection of 33 additional fan rotor disks, beyond the quantity of reinspections required by AD 93-25-16. This amendment is prompted by discrepancies in several magnetic tape records discovered as a result of recent improvements in the inspection tape review process. The actions specified by this AD are intended to prevent an uncontained failure of the fan rotor disk due to fatigue cracking in the dovetail slots, which can result in inflight engine shutdowns, severe secondary damage, and fan rotor assembly separation from the engine.

Which aircraft AD 96-04-01 applies to

MakesAlliedsignal
ModelsTFE731-2, TFE731-2A, TFE731-3, TFE731-3R, TFE731
Part-conditional3072162-1 through -4, 3073436-1 through -4, 3073539-2, 3074529-2.

Applies only to engines with the listed fan rotor disk part numbers, regardless of prior modification/alteration/repair in the affected area; installed on but not limited to Dassault Falcon 10/50/100, Learjet 31/35/36, Lockheed 1329-23/-25, IAI 1124, Raytheon/BAe HS125, and Sabreliner NA-265-65 aircraft.

Whether AD 96-04-01 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 complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 96-04-01 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.