Is AD 99-20325 a recurring Airworthiness Directive?

No — AD 99-20325 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-20325 apply to?

AD 99-20325 applies to Airbus — models A300-600, A310. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-20325

one-time

AD 99-20325 · 1999-08-09 · airframe

Airworthiness Directives; Airbus Model A300, A310, and A300-600 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to all Airbus Model A300, A310, and A300-600 series airplanes. This action requires a one-time inspection of the autopilot systems for proper engagement to determine if the main electro valve electrical connectors of the yaw, roll, and pitch autopilot actuators are correctly installed; and corrective actions, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified in this AD are intended to prevent erratic movements of the ailerons, elevator, and/or rudder that are commanded by discrepant autopilot actuators, which could result in reduced controllability of the airplane.

Which aircraft AD 99-20325 applies to

MakesAirbus

ModelsA300-600, A310

applicability derived from the AD summary — confirm the model/serial from the records

Whether AD 99-20325 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 99-20325 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.