Is AD 2013-03-03 a recurring Airworthiness Directive?

No — AD 2013-03-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-03-03 apply to?

AD 2013-03-03 applies to Mdhi — models 500N, 600N, MD900. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-03-03

one-time

Official AD 2013-03-03 · FR doc 2013-02582 · 2013-02-08 · airframe

Airworthiness Directives; MD Helicopters, Inc., Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for MD Helicopters, Inc. (MDHI) Model 500N, 600N and MD900 helicopters to require determining the cure date for each NOTAR fan blade tension- torsion strap (T-T strap), establishing a calendar-time retirement life for certain T-T straps, reducing the retirement life of certain T-T straps, marking each T-T strap with the expiration date, creating a component record card for each T-T strap, and revising the airworthiness limitations section of the maintenance manual to reflect the changes to the retirement life. This AD was prompted by a report from the T-T strap manufacturer that, over a period of time, moisture may reduce the strength of a T-T strap. The actions are intended to prevent failure of a T-T strap, loss of directional control and subsequent loss of control of the helicopter.

Which aircraft AD 2013-03-03 applies to

MakesMdhi

Models500N, 600N, MD900

Part-conditional — 500N5311-5, 900R3442009-101, 900R3442009-103, 900R6442009-103.

MDHI Model 500N and 600N helicopters with NOTAR fan blade tension-torsion (T-T) strap P/N 500N5311-5 installed; and MDHI Model MD900 helicopters with T-T strap P/N 500N5311-5, P/N 900R3442009-101, P/N 900R3442009-103, or P/N 900R6442009-103 installed.

Whether AD 2013-03-03 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 2013-03-03 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.