Airworthiness Directive 67-23-05
one-timeAirworthiness Directives; the Airplanes Listed: P/N's 112A, 147A, and 1137A Installed on BAC 1-11 200 and 400 Series Airplanes; P/N 132A Installed on Short
Which aircraft AD 67-23-05 applies to
Fire extinguisher part numbers (112A/147A/1137A/132A/142A per teaser) installed across BAC 1-11 200/400 Series, Short Bros. SC-7 Skyvan Series 2/3, and DH.125 Series 1A(S-522)/3A/3A-R/3A-RA/400A airframes — applicability read from the AD teaser — confirm exact model/serial/part installation from the records.
Whether AD 67-23-05 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:
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.