Is AD 48-43-01 a recurring Airworthiness Directive?

No — AD 48-43-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 48-43-01 apply to?

AD 48-43-01 applies to Hydroaire. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 48-43-01

one-time

AD 48-43-01 · 1948-01-01 · airframe

Airworthiness Directives; Replace the system emergency and flap synchronizer bypass valves, P/N 2021A82089, (HydroAire No. 4010) with new valves P/N 2021A82

Which aircraft AD 48-43-01 applies to

MakesHydroaire

Part-conditional — 2021A82089, 2021A82089-01, 2021A80590, 2021A23493, 2021A23508, 2021A82131, 155-32-10, 155-32-20.

applicability read from the AD teaser — confirm exact model/serial from the records

Whether AD 48-43-01 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 48-43-01 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 →

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.