Is AD 80-09-03 R1 a recurring Airworthiness Directive?

No — AD 80-09-03 R1 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 80-09-03 R1 apply to?

AD 80-09-03 R1 applies to Beech — models B90, C90, E90, H90, 200T, 200C, A200, A100. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 80-09-03 R1

one-time

AD 80-09-03 R1 · 1980-01-01 · airframe

Airworthiness Directives; "Flight above 25,000 feet prohibited unless the oxygen system is ARMED (ON)." and operate the airplane in accordance with this lim

Which aircraft AD 80-09-03 R1 applies to

MakesBeech

ModelsB90, C90, E90, H90, 200T, 200C, A200, A100, 90, 100, 200

Install a placard reading 'Flight above 25,000 feet prohibited unless the oxygen system is ARMED (ON)' in clear view of the pilot and operate accordingly; airplanes listed in Group II of the applicability statement must locally fabricate the placard using letters at least 3/32 inch high.

Whether AD 80-09-03 R1 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 80-09-03 R1 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.