Airworthiness Directive 59-18-05
one-timeAD 59-18-05 · 1959-01-01 · airframe
Airworthiness Directives; the heater fuel line fittings, remove three shroud assemblies, P/N 27-774575-1, attached to tube connections at top of heater fuel
Which aircraft AD 59-18-05 applies to
MakesHeater Fuel Line Fittings Remove Three Shroud Assemblies P N 27-774575-1 Attached To Tube Connections At Top Of Heater Fuel Control P N 43C80 And Heater P N 49C65 Modify Shroud Assemblies By Punching One 1 8-Inch Diameter Hole In Side Of Shroud 1 13 64 Inches From Top Remove Fuel Control Drain Tube Assembly P N 27-774554-11 Or -51 Whichever Installed On All Affected
Applies to all models of the make above.
Whether AD 59-18-05 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:
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 59-18-05 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.
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.