Part 23 10-min. OEI method proposed

Aviation International News » June 2006
September 14, 2006, 11:34 AM

The FAA released a draft policy that would offer a streamlined way for manufacturers of Part 23 multi-engine turbine airplanes–including very light jets–to use a 10-minute standard for one-engine inoperative conditions. The standard doubles the time during which the remaining engine can be operated at rated takeoff thrust. Manufacturers have to apply for the 10-minute capability, and each engine and airplane model needs separate approval. The 10-minute standard was outlined in a policy letter for Part 25 airplanes that was last revised in 1994. For approval of the 10-minute standard, engine manufacturers will have to add a note, including any applicable limitations, in the engine’s type certificate data sheet, operating instructions and installation manual. Cessna told AIN it has already applied for an exemption to use the 10-minute standard on its Mustang VLJ.

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