Is AD 2013-04-11 a recurring Airworthiness Directive?

No — AD 2013-04-11 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2013-04-11 apply to?

AD 2013-04-11 applies to Boeing — models 737-600, 737-700, 737-800, 737-900ER, 737. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2013-04-11

one-time

Official AD 2013-04-11 · FR doc 2013-04633 · 2013-03-07 · airframe

Airworthiness Directives; The Boeing Company Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -800, and -900ER series airplanes. This AD was prompted by incorrect wire support clamps installed within the left environmental control systems (ECS) bay, which could allow wiring to come in contact with the exposed metal of the improper clamp. This AD requires inspections to identify the part number of the wire support clamp, related investigative actions, and corrective actions if necessary. We are issuing this AD to prevent electrical arcing and a potential ignition source within the ECS bay, which in combination with flammable fuel vapors, could result in a center wing fuel tank explosion, and consequent loss of the airplane.

Which aircraft AD 2013-04-11 applies to

MakesBoeing

Models737-600, 737-700, 737-800, 737-900ER, 737

Applicability limited to airplanes identified in Boeing Special Attention Service Bulletin 737-28-1303, dated 2012-04-26.

Whether AD 2013-04-11 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 2013-04-11 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.