Is AD 2008-22-01 a recurring Airworthiness Directive?

No — AD 2008-22-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2008-22-01

Q: Which aircraft does AD 2008-22-01 apply to?

AD 2008-22-01 applies to Boeing, Bombardier, Mcdonnell Douglas — models 727, 727-100, 727-200, 737-200, 737-200C, 737-300, 737-400, 737-500. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2008-22-01 · FR doc E8-25055 · 2008-10-22 · airframe

Airworthiness Directives; Various Transport Category Airplanes Equipped With Auxiliary Fuel Tanks Installed in Accordance With Certain Supplemental Type Certificates

What this AD requires

We are adopting a new airworthiness directive (AD) for various transport category airplanes. This AD requires deactivation of PATS Aircraft, LLC, auxiliary fuel tanks. This AD results from fuel system reviews conducted by the manufacturer, which identified unsafe conditions for which the manufacturer has not provided corrective actions. We are issuing this AD to prevent the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.

Which aircraft AD 2008-22-01 applies to

MakesBoeing Bombardier Mcdonnell Douglas

Models727, 727-100, 727-200, 737-200, 737-200C, 737-300, 737-400, 737-500, 737-700, 737-800, 757-200, 767-200, DC-8-62, DC-9-33F, DC-9-81, DC-9-82, DC-9-83, DC-9-87, 737, 757, 767, CL-600-2B19, DC-8, DC-9

Part-conditional — SA62NE, SA392NE, SA530NE, SA387NE, ST00466NY, SA84NE, SA450NE, SA496NE.

Applies only to airplanes equipped with auxiliary fuel tanks installed under the model-specific STC(s) listed in Table 1 of this AD (see part_numbers); several STCs are excluded when installed with a specific alternate configuration (e.g., SA725NE unless installed with SA725NE-D Configuration 7; ST00936NY-D unless installed with Configuration 3).

Whether AD 2008-22-01 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 2008-22-01 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.