Is AD 2003-14-51 a recurring Airworthiness Directive?

No — AD 2003-14-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-14-51 apply to?

AD 2003-14-51 applies to Md Helicopters — models MD900. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-14-51

one-time

Official AD 2003-14-51 · FR doc 03-19976 · 2003-08-08 · airframe

Airworthiness Directives; MD Helicopters, Inc., Model MD900 Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2003-14-51, which was sent previously to all known U.S. owners and operators of the specified MD Helicopters, Inc. (MDHI) helicopters by individual letters. This AD requires checking and inspecting each main rotor blade retention bolt (bolt) and replacing the bolt with an airworthy bolt if necessary. The actions specified by this AD are intended to prevent failure of a bolt, loss of main rotor blade, and subsequent loss of control of the helicopter.

Which aircraft AD 2003-14-51 applies to

MakesMd Helicopters

ModelsMD900

Serial-conditional — narrows to serials 900-00008–900-00114.

Part-conditional — 900R3100001-103.

Applies only to helicopters with main rotor blade retention bolt P/N 900R3100001-103 installed.

Whether AD 2003-14-51 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 2003-14-51 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.