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Airworthiness Directive 48-14-04

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AD 48-14-04 · 1948-01-01 · airframe

Airworthiness Directives; DOUGLAS C-54

Which aircraft AD 48-14-04 applies to

MakesDouglasThe Boeing Company
ModelsC54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C-54

Applies to all C-54 Series aircraft prior to Model C-54G. Compliance required by November 1, 1948. Because of fire hazard, requires installing a tailpipe shroud per the accomplishment instructions in the service bulletin; Douglas Service Bulletin C-54-289 addendum covers the same subject.

Whether AD 48-14-04 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 48-14-04 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.