AD 96-21-02

96-21-02 BOMBARDIER, INC. (Formerly Canadair): Amendment 39-9778. Docket 96-NM-246-AD.

Applicability: Model CL-600-2B19 (Regional Jet Series 100) series airplanes; having serial numbers 7003 and subsequent; certificated in any category.

NOTE 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Compliance:Required as indicated, unless accomplished previously.

To prevent uncommanded changes in the settings of the barometric altimeter, altitude pre-selector, V-speed, and speed bug on the co-pilot s instrument display, which could result in confusion among the flight crew about the correct position and flight configuration of the airplane, accomplish the following:

(a) Within 3 days after the effective date of this AD, revise the Limitations Section of the FAA-approved Airplane Flight Manual (AFM) to include the following statement. This may be accomplished by inserting a copy of this AD in the AFM.

"Prior to each takeoff and after any event during which generators are switched, check the settings of the barometric altimeter, altitude pre-selector, V-speed, and speed bug. If any discrepancy is detected, reset, as necessary."

(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, New York Aircraft Certification Office (ACO), FAA, Engine and Propeller Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, New York ACO.

NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the New York ACO.

(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.

(d) This amendment becomes effective on October 15, 1996.