Airworthiness Directive · Amendment 39-9217 · Cessna Aircraft Company Models T303, 402C, 404, 414A, and 421C Airplanes
Cessna Aircraft Company Models T303, 402C, 404, 414A, and 421C Airplanes
The following model and serial number airplanes, certificated in any category: Model Serial Nos. T303 T30300001 through T30300315. 402C 402C0001 through 402C1020, and 689. 404 404-0001 through 404-0859. 414A 414A0001 through 414A1212. 421C 421C0001 through 421C1807.
This amendment supersedes AD 93-05-03, which currently requires repetitively inspecting each fuel inlet float valve in accordance with certain test procedures on Cessna Aircraft Company (Cessna) Models T303, 402C, 404, 414A, and 421C airplanes, and replacing any valve that does not pass this test. The manufacturer has developed fuel inlet float valves of improved design, and the Federal Aviation Administration (FAA) has determined that the improved valves should be installed to reduce the number of repetitive tests currently required by AD 93-05-03. This action requires installing these fuel inlet float valves of improved design. The actions specified by this AD are intended to prevent possible loss of engine power caused by failure of a fuel inlet float valve.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
