Is AD E7-18747 a recurring Airworthiness Directive?

No — AD E7-18747 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD E7-18747 apply to?

AD E7-18747 applies to Boeing — models 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive E7-18747

one-time

AD E7-18747 · 2007-09-26 · airframe

Airworthiness Directives; Boeing Model 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, and 747SP Series Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 747-100B SUD, 747-200B, 747-200C, 747-200F, 747- 300, 747-400, 747-400D, 747-400F, and 747SP series airplanes. This AD requires reconfiguring the clamps of certain wire bundles and applying insulating sealant to certain fasteners inside the fuel tanks. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent arcing inside the fuel tanks in the event of a lightning strike or high-powered short circuit, which could result in a fuel tank explosion or fire.

Which aircraft AD E7-18747 applies to

MakesBoeing

Models747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP

certain

Whether AD E7-18747 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 E7-18747 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.