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Airworthiness Directive 70-18-03

one-time
AD 70-18-03 · 1970-01-01 · appliance

Airworthiness Directives; the antireversing switch with a new switch of the same part number and readjust the antireversing and reversing system in accordan

Which aircraft AD 70-18-03 applies to

MakesPilatus

Antireversing switch in propeller reversing system; replace with new switch of same part number and readjust system per Pilatus Service Bulletin No. 100, dated March 1970, at intervals not to exceed 2,000 hours time in service.

Whether AD 70-18-03 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 70-18-03 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.

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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.