Is AD 67-26-01 a recurring Airworthiness Directive?

No — AD 67-26-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 67-26-01 apply to?

AD 67-26-01 applies to Boulton Paul — models BAC 1-11. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 67-26-01

one-time

AD 67-26-01 · 1967-01-01 · appliance

Airworthiness Directives; indicate that the yaw damper is deactivated (c) Adjust and modify the yaw-damper control as follows: (1) Adjust the yaw-damper act

Which aircraft AD 67-26-01 applies to

MakesBoulton Paul

ModelsBAC 1-11

Part-conditional — P185-45-10.

Adjust/modify yaw-damper actuator (Boulton Paul P/N P185-45-10) per Boulton Paul Modification Nos. P185/11 or P185/15, in accordance with BAC 1-11 Service Bulletin No. 27-PM 3191 or later ARB-approved issue, on BAC One-Eleven airplanes.

Whether AD 67-26-01 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 67-26-01 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.