Airworthiness Directive 64-04-03
one-timeAirworthiness Directives; Attach the patch with eight AN 470AD3-4 rivets evenly spaced. (Champion Service Letter No. 59 covers the same subject.) This direc
Which aircraft AD 64-04-03 applies to
Requires attaching a patch with eight AN470AD3-4 rivets evenly spaced; Champion Service Letter No. 59 covers the same subject. Directive effective March 9, 1964 (Amdt. 39-683, Part 507).
Whether AD 64-04-03 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:
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.