Is AD 2013-09-05 a recurring Airworthiness Directive?

No — AD 2013-09-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-09-05 apply to?

AD 2013-09-05 applies to Twin Commander Aircraft Llc — models 690, 690A, 690B. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-09-05

one-time

Official AD 2013-09-05 · FR doc 2013-10498 · 2013-05-14 · airframe

Airworthiness Directives; Twin Commander Aircraft LLC Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Twin Commander Aircraft LLC Models 690, 690A, and 690B airplanes. This AD requires inspection for cracking of the outer fuselage attachments, the lower wing main spar, the vertical channels, the upper picture window channels, aft cabin pressure web, external wing to fuselage fillets, and fasteners; repair or replacement of damaged parts as necessary; and modification of the structure with reinforced parts. This AD was prompted by cracks found in the upper picture window frame channels, left- and right-hand wing main spar frame support channels, and aft pressure bulkhead web. This condition, if not corrected, could result in structural failure of the airplane. We are issuing this AD to correct the unsafe condition on these products.

Which aircraft AD 2013-09-05 applies to

MakesTwin Commander Aircraft Llc

Models690, 690A, 690B

Part-conditional — SA5740NM.

Applies to all serial numbers except: Model 690 S/N 11057; Model 690A S/Ns 11104, 11106, 11129, 11134, 11146, 11159, 11173, 11192, 11220, 11237, 11252, 11263, 11280, 11287, 11298, 11303, 11317, 11339, and 11341; Model 690B S/Ns 11383, 11384, 11401, and 11436. Aircraft with AVIADESIGN, Inc. STC SA5740NM installed are not compatible with the modifications in Twin Commander Aircraft LLC Service Bulletin 241, dated September 26, 2012.

Whether AD 2013-09-05 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 2013-09-05 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.