Is AD 2013-21716 a recurring Airworthiness Directive?

No — AD 2013-21716 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-21716 apply to?

AD 2013-21716 applies to Bell — models 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-21716

one-time

AD 2013-21716 · 2013-09-12 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) Helicopters

What this AD requires

We are adopting a new airworthiness directive (AD) for Bell Model 206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, and 430 helicopters. This AD requires inspecting each bearing to determine if it has been properly staked and replacing the bearing or assembly if it has not been properly staked. This AD was prompted by bearings not being properly staked and migrating out of their proper position, which may limit the functionality of the affected part. The actions of this AD are intended to prevent failure of a bearing and the assembly in which it is installed and subsequent loss of control of the helicopter.

Which aircraft AD 2013-21716 applies to

MakesBell

Models206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 222, 222B, 222U, 230, 407, 427, 430, 206

Part-conditional — 206-001-526-001, 206-001-538-009, 206-010-336-109, 206-031-589-001, 206-001-549-101, 206-001-552-001, 222-010-419-110, 222-001-734-001.

Applicability is conditional per model on specific bellcrank/idler/link/bearing/fitting part numbers being installed (see AD text (a)(1)-(9) for full per-model breakdown); unsafe condition is bearings that may not have been staked as required.

Whether AD 2013-21716 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 2013-21716 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.