Airworthiness Directive 73-23-03

one-time
AD 73-23-03 · 1973-01-01 · airframe

Airworthiness Directives; already accomplished. To preclude separation of the inner liner and possible blockage of carburetor induction air flexible ducts w

Which aircraft AD 73-23-03 applies to

MakesBeech
ModelsA23-19, 19A, M19A, B19, 23, A23, A23A, B23, C23, A23-24, A-24

To preclude separation of the inner liner and possible blockage of carburetor induction air flexible ducts (which may cause partial or complete engine power loss): within 100 hours after the effective date, inspect the ducts; single-wall ducts need no further action; double-wall ducts must be replaced prior to further flight.

Whether AD 73-23-03 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 complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 73-23-03 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.