Is AD 2004-16-08 a recurring Airworthiness Directive?

No — AD 2004-16-08 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2004-16-08 apply to?

AD 2004-16-08 applies to Md Helicopters — models MD900. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2004-16-08

one-time

Official AD 2004-16-08 · FR doc 04-17793 · 2004-08-10 · airframe

Airworthiness Directives; MD Helicopters Inc. Model MD900 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for MD Helicopters, Inc. Model MD900 helicopters. This action requires installing a fan input force limiting control rod assembly fail-safe device (fail-safe device). This AD also requires, after installing a fail-safe device, before the first flight of each day, checking the fail-safe device for bent clips, taut lanyards, and piston rod movement. If any of these conditions are found, this AD requires replacing the control rod assembly with an airworthy control rod assembly before further flight. This amendment is prompted by an accident report of fatigue failure of the piston rod in the spring capsule on a control rod assembly. The actions specified in this AD are intended to provide a temporary backup support system in the event of a piston rod failure and to prevent subsequent loss of control of the helicopter.

Which aircraft AD 2004-16-08 applies to

MakesMd Helicopters

ModelsMD900

Part-conditional — 900C6010239-105, 900C2010239-107.

Applies only to MD900 helicopters with Fan Input Force Limiting Control Rod Assembly P/N 900C6010239-105 or 900C2010239-107 installed.

Whether AD 2004-16-08 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 2004-16-08 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.