Airworthiness Directive 46-44-04
one-timeAirworthiness Directives; -212L Series flexible ducts installed in the carburetor hot air system should be replaced by U. S. Rubber Co. P-208-S duct or P-20
Which aircraft AD 46-44-04 applies to
Carburetor hot air system flexible duct replacement (U.S. Rubber Co. duct coated with neoprene by Cessna); specific model designation truncated in this excerpt (applicability read from the AD teaser — confirm exact model/serial from the records.)
Whether AD 46-44-04 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:
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.