Is AD 97-19-09 a recurring Airworthiness Directive?

No — AD 97-19-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 97-19-09 apply to?

AD 97-19-09 applies to Bell Helicopter Textron — models 214ST, 214. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-19-09

one-time

Official AD 97-19-09 · FR doc 97-24117 · 1997-09-11 · airframe

Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214ST Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Bell Helicopter Textron, Inc. (BHTI) Model 214ST helicopters, that requires creation of a component history card or equivalent record using a Retirement Index Number (RIN) system; establishes a system for tracking increases to the accumulated RIN; and establishes a maximum accumulated RIN for the pillow block bearing bolts (bearing bolts). This amendment is prompted by fatigue analyses and tests that show certain bearing bolts fail sooner than originally anticipated because of the unanticipated high number of takeoffs and external load lifts utilizing high-power settings in addition to the time-in-service (TIS) accrued under other operating conditions. The actions specified by this AD are intended to prevent fatigue failure of the bearing bolts, which could result in failure of the main rotor system and subsequent loss of control of the helicopter.

Which aircraft AD 97-19-09 applies to

MakesBell Helicopter Textron

Models214ST, 214

Part-conditional — 20-057-12-48D, 20-057-12-50D.

Main rotor bearing bolts P/N 20-057-12-48D/-50D tracked via a Retirement Index Number (RIN); new retirement life of 17,000 RIN established. References Bell Helicopter Textron Alert Service Bulletin 214ST-94-69 (Nov 7, 1994).

Whether AD 97-19-09 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 97-19-09 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.