Airworthiness Directive 75-22-11
one-timeAD 75-22-11 · 1975-01-01 · turbine engine
Airworthiness Directives; the high pressure turbine thermal shield accomplish the following: (a) Within the next 400 operating cycles after the effective da
Which aircraft AD 75-22-11 applies to
MakesHigh Pressure Turbine Thermal Shield Accomplish Following Within Next 400 Operating Cycles After Effective Date Of This Airworthiness Directive Unless Already Accomplished And Every 400 Cycles Thereafter Borescope Inspect High Pressure Turbine Thermal Shield On All Cf6-6D And Cf6-6D1
Applies to all models of the make above.
Whether AD 75-22-11 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 75-22-11 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.