Is AD 90-20-05 a recurring Airworthiness Directive?

No — AD 90-20-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 90-20-05 apply to?

AD 90-20-05 applies to Aviat Aircraft Inc. — models A-1. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 90-20-05

one-time

AD 90-20-05 · 1990-01-01 · airframe

Airworthiness Directives; 90-20-05) becomes effective on October 15, 1990. FOOTER: Aviat Aircraft Inc A-1 Aviat Aircraft Inc\A-1 This information is not ava

Which aircraft AD 90-20-05 applies to

MakesAviat Aircraft Inc.

ModelsA-1

Effective October 15, 1990; Docket No. 90-CE-30-AD. Specific applicability text not present in retrieved excerpt (truncated/OCR-corrupted); footer tag identifies Aviat Aircraft Inc. model A-1.

Whether AD 90-20-05 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 90-20-05 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 →

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.