WASHINGTON (CN) - Swapped fire extinguishing wires in certain Learjet Model 60 planes may cause the fire extinguishing agent to go to an engine that is not on fire, leaving an actual engine fire unextinguished, according to the Federal Aviation Administration.
The agency says the problem was noted in two planes, and the Federal Aviation Administration is proposing that all Learjet Inc. Model 60 airplanes with serial numbers 60-002 through 60-366, inclusive, be inspected for crossed fire extinguisher leads. The leads may be improperly identified or missing labels, according to the FAA's proposed airworthiness directive to remedy the situation.
The inspection and any repairs must be performed at the plane's next auxiliary power unit removal, or within 300 flight hours after the effective date of the airworthiness directive, whichever occurs first. The effective date of the directive would be after the comment period on the rule, which ends Jan. 17.
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