Is AD 43-12-01 a recurring Airworthiness Directive?

No — AD 43-12-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 43-12-01

Q: Which aircraft does AD 43-12-01 apply to?

AD 43-12-01 applies to The Boeing Company, Douglas — models DC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC-3. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 43-12-01 · 1943-01-01 · airframe

Airworthiness Directives; r.p.m. during cruising flight is recommended. (Douglas Service Letter dated January 15, 1943, covers this same subject.) FOOTER: T

Which aircraft AD 43-12-01 applies to

MakesThe Boeing CompanyDouglas

ModelsDC3A-S1C3G, DC3A-S1CG, DC3A-S4C4G, DC3A-SC3G, DC3A-SCG, DC-3

References a recommended r.p.m. during cruising flight; see Douglas Service Letter dated January 15, 1943, covering the same subject.

Whether AD 43-12-01 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 43-12-01 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.