Airworthiness Directive · Amendment 39-10406 · Learjet Model 31 and 35A Airplanes
Learjet Model 31 and 35A Airplanes
Model 31 airplanes having serial numbers 31-002 through 31-029 inclusive, and Model 35A airplanes having serial numbers 35-647 through 35-670 inclusive; certificated in any category.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Learjet Model 31 and 35A airplanes, that currently requires replacement of two segments of 16 American Wire Gauge (AWG) wire with 8 AWG wire at the connector that is connected to the auxiliary cabin heater relay box. That AD was prompted by a report indicating that two segments of the 16 AWG wire in the auxiliary cabin heater, which were spliced during production, do not provide adequate current-carrying capacity. This amendment requires the installation of a new replacement wire assembly. The actions specified by this AD are intended to prevent electrical arcing and consequent fire hazard that could result from wiring with inadequate current-carrying capacity.
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.
Aircraft
