Is AD 06-4193 a recurring Airworthiness Directive?

No — AD 06-4193 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 06-4193

Q: Which aircraft does AD 06-4193 apply to?

AD 06-4193 applies to Honeywell International — models ALF502L, ALF502L-2, ALF502L-2A, ALF502L-2C, ALF502L-3, ALF502R, ALF502. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 06-4193 · 2006-05-09 · turbine engine

Airworthiness Directives; Honeywell International Inc. ALF502L Series and ALF502R Series Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for Honeywell International Inc. ALF502L series and ALF502R series turbofan engines. That AD currently establishes stress rupture retirement life limits for certain third stage turbine discs used in conjunction with certain third stage turbine nozzles. This AD brings requirements forward and unchanged, from the previous AD for ALF502R series turbofan engines. Also, this AD establishes new reduced stress rupture retirement life limits for certain part numbers (P/Ns) of third stage turbine disc and shaft assemblies installed in ALF502L series turbofan engines. This AD also requires removing those same parts from service using a drawdown schedule. This AD results from a report of failure of a third stage turbine disc and shaft assembly, leading to turbine blade release and separation of the exhaust nozzle. We are issuing this AD to prevent total loss of engine power, in-flight engine shutdown, release of turbine blades, separation of the exhaust nozzle, and possible damage to the airplane.

Which aircraft AD 06-4193 applies to

MakesHoneywell International

ModelsALF502L, ALF502L-2, ALF502L-2A, ALF502L-2C, ALF502L-3, ALF502R, ALF502

Applies only to engines with third stage turbine disc and shaft assemblies that have operated in the Honeywell Pre-SB No. ALF502L 72-232 configuration.

Whether AD 06-4193 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 95-04-11.

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 06-4193 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.