Is AD 2013-06746 a recurring Airworthiness Directive?

No — AD 2013-06746 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-06746 apply to?

AD 2013-06746 applies to Md Helicopters — models 369D, 369E, 369F, 369FF, 369. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-06746

one-time

AD 2013-06746 · 2013-03-26 · airframe

Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems (Type Certificate Is Currently Held by MD Helicopters, Inc.) Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 369D, 369E, 369F, and 369FF helicopters with certain serial-numbered tailboom assemblies. This AD requires measuring the distance between aft longeron rivets and the outboard edge of frame rings. If the distance is too short to ensure a safe flight, the AD requires installing a doubler. This AD was prompted by the discovery of short-edge margin conditions on two tailboom assemblies. The actions are intended to detect a short-edge margin condition, prevent failure of the tailboom and loss of control of the helicopter.

Which aircraft AD 2013-06746 applies to

MakesMd Helicopters

Models369D, 369E, 369F, 369FF, 369

Serial-conditional — narrows to serials 7604-0001–7604-0003, 7604-0006–7604-0047, 7604-0049–7604-0082, 7604-0084–7604-0113.

Part-conditional — 369D23500-505, 369D23500-507, 369D23500-511, 369D23500-513.

Applies only when tailboom assembly P/N 369D23500-505, -507, -511, or -513 with a serial number prefix of '7604' in the listed ranges is installed.

Whether AD 2013-06746 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 2013-06746 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.