Airworthiness Directive 56-22-01
one-timeAD 56-22-01 · 1956-01-01 · propeller
Airworthiness Directives; AIRWORTHINESS DIRECTIVES FINAL RULES: 56-22-01 CITATION: PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 56-22-01 SUBJEC
Which aircraft AD 56-22-01 applies to
MakesAirworthiness Directives Final Rules 56-22-01 Citation Page Number Docket Number Unknown Amendment Ad Number 56-22-01 Subject Heading Hamilton Standard Applies To All Accordance With Hamilton Standard Service Bulletin No 385B Blades With Excessive Corrosion And Or Cracks Should Be Returned To Hamilton Standard For Further Evaluation This Directive Is Evaluation This Directive Is Also Applicable To Aluminum Blades Which Do Not Currently Include Aforementioned Adhered Rubber Parts But Formerly Incorporated Them Without Ec776
Applies to all models of the make above.
Whether AD 56-22-01 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 56-22-01 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.