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Airworthiness Directive 2007-16-01

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Official AD 2007-16-01 · FR doc 07-3711 · 2007-07-31 · airframe

Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28, F-28A, F-28C, F- 28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B helicopters. This action requires a visual check to determine if a certain serial-numbered main rotor blade retention pin (retention pin) is installed, and removing and replacing any affected retention pin with an airworthy retention pin. This amendment is prompted by a report from the manufacturer that some retention pins were not manufactured in accordance with specifications cited on the engineering drawing. The actions specified in this AD are intended to prevent failure of a retention pin, separation of a main rotor blade from the helicopter, and subsequent loss of control of the helicopter.

Which aircraft AD 2007-16-01 applies to

MakesEnstrom
ModelsF-28, F-28A, F-28C, F-28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, 480B
Serial-conditional — narrows to serials 04098-01–04098-56, 05018-01–05018-36, 05143-01–05143-56, 05341-1–05341-8, 05341-10–05341-17, 05341-19–05341-19, 05341-21–05341-33, 05341-35–05341-42, 05341-44–05341-59, 05341-61–05341-61, 05341-62–05341-62, 05341-64–05341-71, 06214-3–06214-14, 06214-16–06214-23, 06214-25–06214-29, 06214-31–06214-31, 06214-33–06214-35, 06214-37–06214-57, 06214-59–06214-68.

Applies only to helicopters with a main rotor blade retention pin bearing one of the listed serial numbers installed.

Whether AD 2007-16-01 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 2007-16-01 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.