Airworthiness Directive · Amendment 39-11699 · Learjet Model 45 Airplanes
Learjet Model 45 Airplanes
Model 45 airplanes on which Crane Hydro-Aire brake control unit part number (P/N) 42-933-2 is installed; certificated in any category.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Learjet Model 45 airplanes. This action requires revising the Airplane Flight Manual to provide the flight crew with certain instructions associated with an exterior preflight inspection and ground operations. This amendment is prompted by a report indicating the occurrence of an uncommanded brake application condition that was not annunciated in the cockpit. The actions specified in this AD are intended to provide the flight crew with procedures to detect an uncommanded brake application condition during taxi and takeoff. Such a condition could result in a possible wheel/brake fire and/or a high- speed rejected takeoff.
To provide the flight crew with procedures to detect an uncommanded brake application condition during taxi and takeoff, which could result in a possible wheel/brake fire and/or a high-speed rejected takeoff, accomplish the following:
(a) Within 10 days after the effective date of this AD, revise the Limitations and Normal Procedures Sections of the FAA-approved AFM to include Learjet Temporary Flight Manual (TFM) Changes 2000-01, 2000-02, 2000-03, 2000-04, 2000-05, 2000-06, 2000-07, and 2000-08, each dated April 6, 2000.
Note 1: The AFM revision required by paragraph (a) of this AD may be accomplished by inserting a copy of the applicable TFM Change into the applicable section of the AFM. When these TFM Changes have been incorporated into the general revisions of the AFM, the general revisions may be inserted into the AFM, provided that the information contained in the general revisions is identical to that specified in the TFM Changes.
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
