Is AD 59-07-02 a recurring Airworthiness Directive?

No — AD 59-07-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 59-07-02 apply to?

AD 59-07-02 applies to L. B. Smith Aircraft Corporation — models C-46/CW20-T. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 59-07-02

one-time

AD 59-07-02 · 1959-01-01 · airframe

Airworthiness Directives; L.B. Smith C46/CW20-T aircraft not having this modification incorporated. To be accomplished not later than August 1, 1959. Servic

Which aircraft AD 59-07-02 applies to

MakesL. B. Smith Aircraft Corporation

ModelsC-46/CW20-T

Auxiliary hydraulic pump and motor must be removed from the hydraulic system and replaced by a hydraulic by-pass system per L. B. Smith Aircraft Corporation Report No. RX5.130.01 dated April 16, 1958, or equivalent; Airplane Flight Manual Revision dated July 11, 1958 required; compliance not later than August 1, 1959.

Whether AD 59-07-02 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 59-07-02 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.