Is AD 99-13-01 a recurring Airworthiness Directive?

No — AD 99-13-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-13-01 apply to?

AD 99-13-01 applies to International Aero Engines Ag — models V2500-A1, V2500-A5, V2500. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-13-01

one-time

Official AD 99-13-01 · FR doc 99-14933 · 1999-06-15 · turbine engine

Airworthiness Directives; International Aero Engines AG V2500-A1 and V2500-A5 Series Turbofan Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to certain International Aero Engines AG (IAE) V2500-A1 and V2500-A5 series turbofan engines. This action requires determining the need for a special borescope inspection of the high pressure turbine (HPT) stage 1 inner rotating airseal (TOBI ID seal) for oil wetting after an in-flight shutdown (IFSD). It also requires, if necessary, the tear down and inspection of HPT hardware. This amendment is prompted by reports of overheat damage to the HPT hardware caused by ignition of oil that leaked into the HPT from the No. 4 bearing compartment during an IFSD. The actions specified in this AD are intended to prevent failure of the HPT hardware due to ignition of oil trapped by the HPT TOBI ID seal, which could result in an uncontained engine failure and damage to the airplane.

Which aircraft AD 99-13-01 applies to

MakesInternational Aero Engines Ag

ModelsV2500-A1, V2500-A5, V2500

Serial-conditional — narrows to serials ?–V10079.

V2500-A1 engines apply at all serial numbers; V2500-A5 engines apply only at S/N V10079 and below. Installed on but not limited to Airbus Industries A319, A320, and A321 series airplanes.

Whether AD 99-13-01 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 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 99-13-01 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.