Is AD 2013-19-24 a recurring Airworthiness Directive?

No — AD 2013-19-24 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-19-24 apply to?

AD 2013-19-24 applies to Md Helicopters — models 369A, 369D, 369E, 369H, 369HE, 369HM, 369HS, 369F. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-19-24

one-time

Official AD 2013-19-24 · FR doc 2013-24039 · 2013-10-31 · airframe

Airworthiness Directives; MD Helicopters, Inc., Helicopters

What this AD requires

We are superseding Airworthiness Directive (AD) 2003-08-51 for MD Helicopters, Inc. (MDHI), Model 369A, 369D, 369E, 369H, 369HE, 369HM, 369HS, 369F and 369FF helicopters with certain MDHI or Helicopter Technology Company (HTC) tail rotor blades installed. AD 2003-08-51 required reducing the retirement life of each tail rotor blade (blade), performing a one-time visual inspection of each blade's pitch horn (pitch horn) for a crack or corrosion, and replacing any cracked blade or any blade that has exceeded its retirement life with an airworthy blade. AD 2003-08-51 also required reporting information to the FAA within 24 hours following the one-time inspection. Since we issued AD 2003-08-51, an accident in England prompted an investigation that showed corrosion on the blade's pitch horn that had not been detected under the paint. This new AD retains some of the requirements of AD 2003-08-51 and also requires paint removal for all pitch horn inspections, inspecting for pitting and the shot peen surface's condition in addition to cracks and corrosion, and adds certain part- numbered blades to the applicability. These actions are intended to prevent a pitch horn from cracking, leading to vibration, loss of tail rotor pitch control, and subsequent loss of tail rotor and helicopter control.

Which aircraft AD 2013-19-24 applies to

MakesMd Helicopters

Models369A, 369D, 369E, 369H, 369HE, 369HM, 369HS, 369F, 369FF, 369

Part-conditional — 369D21640-501, 369D21640-503, 369D21641-501, 369D21641-503, 369D21642-501, 369D21642-503, 369D21643-501, 369D21643-503.

Applies only to helicopters with a tail rotor blade of the specified MDHI part numbers, or a Helicopter Technology Company blade of the specified part numbers, installed.

Whether AD 2013-19-24 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 2013-19-24 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.