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Airworthiness Directive E6-19439

recurring
AD E6-19439 · 2006-11-21 · airframe

Airworthiness Directives; Cessna Model 750 Airplanes

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) that applies to certain Cessna Model 750 airplanes. The existing AD currently requires repetitive inspections for clearance and chafing of an auxiliary power unit (APU) fuel tube assembly in the tail cone area of the airplane, and corrective actions if necessary. For certain airplanes, the existing AD also requires replacing the APU fuel line. This new AD adds airplanes to the applicability and allows operators to modify the APU fuel line by installing new fuel lines, fairleads, and clamping configurations, which is an optional terminating action for the repetitive inspections. This AD results from reports of chafed APU fuel tubes leaking into the tail cone area due to interference between the fuel tube assembly and elevator flight control cables, hydraulic lines, and high-temperature bleed air couplings. We are issuing this AD to detect and correct this interference, which could result in chafing, fuel leaking into an area where ignition sources are present, and possible fire in an area without fire detection or extinguishing provisions.

Repetitive inspection. Re-inspect every 250 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD E6-19439 applies to

MakesCessna Aircraft Company
Models750
Serial-conditional — narrows to serials 0001–0256.

Whether AD E6-19439 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 2005-09-01.

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 E6-19439 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.