Is AD 2001-08-04 a recurring Airworthiness Directive?

No — AD 2001-08-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2001-08-04 apply to?

AD 2001-08-04 applies to Hr Textron. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2001-08-04

one-time

Official AD 2001-08-04 · FR doc 01-9498 · 2001-04-18 · appliance

Airworthiness Directives; Bell Helicopter Textron Inc. Model 205A-1, 205B, 212, 412, 412CF, and 412EP Helicopters

What this AD requires

This amendment supersedes an existing airworthiness directive (AD) for Bell Helicopter Textron Inc. (BHTI) Model 205A-1, 205B, 212, 412, and 412CF helicopters. That AD currently requires inspecting the locking washer on each main rotor actuator (actuator) for twisting or damage to the tab and replacing any locking washer that has a twisted or damaged tab. Replacing certain locking washers, regardless of condition, is also required within a specified time period. Installing a certain airworthy locking device on each actuator constitutes terminating action for the requirements of that AD. This amendment requires the same actions as the existing AD but adds the BHTI Model 412EP helicopters to the applicability. This amendment is prompted by the discovery that the BHTI Model 412EP helicopter was inadvertently omitted from the existing AD. The actions specified by this AD are intended to prevent an actuator piston from unthreading from its rod end, loss of control of the main rotor, and subsequent loss of control of the helicopter.

Which aircraft AD 2001-08-04 applies to

MakesHr Textron

Part-conditional — NAS513-6, NAS1193K6C.

Cross-reference boilerplate only; host helicopter model list precedes excerpt and was not captured. Applies to three main rotor actuators per helicopter; requires inspecting/replacing the NAS513-6 locking washer with an airworthy NAS1193K6C locking device per HR Textron ASB 41000470-67A-05 Rev 1 or ASB 41105950-67A-01, both dated October 19, 2000.

Whether AD 2001-08-04 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 2001-08-04 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 →Read the full directive (Federal Register)

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.