Is AD 2008-17-15 a recurring Airworthiness Directive?

No — AD 2008-17-15 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2008-17-15 apply to?

AD 2008-17-15 applies to Boeing — models 737-600, 737-700, 737-800, 737-900, 737. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2008-17-15

one-time

Official AD 2008-17-15 · FR doc E8-19367 · 2008-08-28 · airframe

Airworthiness Directives; Boeing Model 737-600, -700, -800, and -900 Series Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Boeing Model 737-600, -700, -800, and -900 series airplanes. This AD requires installing hot short protector (HSP) support brackets and equipment for the fuel quantity indicating system (FQIS) fuel densitometer and other specified actions as applicable. This AD also requires revising the Airworthiness Limitations (AWLs) section of the Instructions for Continued Airworthiness to incorporate AWL No. 28-AWL- 07. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent the center tank fuel densitometer from overheating and becoming a potential ignition source inside the center fuel tank, which, in combination with flammable fuel vapors, could result in a center fuel tank explosion and consequent loss of the airplane.

Which aircraft AD 2008-17-15 applies to

MakesBoeing

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

Applies to airplanes as identified in Boeing Alert Service Bulletin 737-28A1221, Revision 1, dated November 9, 2007.

Whether AD 2008-17-15 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 2008-17-15 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.