96-12-11: Water Door Actuator Microswitches

96-12-11 CANADAIR: Amendment 39-9653. Docket 96-NM-61-AD. Applicability: Model CL-215-1A10 series airplanes, 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 (e) 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 the inadvertent opening of the water doors due to corrosion associated with the microswitches fitted to the water door actuator, accomplish the following: (a) Within 30 days after the effective date of this AD, conduct an inspection to detect discrepancies of the left-hand (LH) and right-hand (RH) microswitches, part number (P/N) 21EN9-6, fitted to the water door actuator, in accordance with paragraphs 2.D. and 2.E. of the Accomplishment Instructions of Canadair Alert Service Bulletin 215-A363, dated March 16, 1987. (b) If no discrepancy is detected during the inspection required by paragraph (a) of this AD, repeat the inspection in accordance with the following schedule: (1) For microswitches that have accumulated less than 5 calendar years and less than 1,000 total flight hours at the time of the inspection: Repeat the inspection at intervals not to exceed 240 flight hours. (2) For microswitches that have accumulated 5 or more calendar years, or 1,000 or more flight hours at the time of the inspection: Repeat the inspection at intervals not to exceed 50 flight hours. (c) If any discrepancy is detected during an inspection required by paragraph (a) or (b) of this AD, prior to further flight, accomplish the action specified in either paragraph (c)(1) or (c)(2) of this AD: (1) Replace the microswitch with a serviceable microswitch of the same part number in accordance with paragraph F. of the Accomplishment Instructions of Canadair Alert Service Bulletin 215-A363, dated March 16, 1987. After replacement, repeat the inspection in accordance with the schedule specified in paragraph (b) of this AD. (2) Modify the water door microswitches in accordance with Canadair Service Bulletin 215-389, Revision 1, dated September 30, 1991. Accomplishment of this modification constitutes terminating action for the repetitive inspection requirements of this AD. (d) Within 2 years after the effective date of this AD, modify the water door microswitches in accordance with Canadair Service Bulletin 215-389, Revision 1, dated September 30, 1991. This modification constitutes terminating action for the requirements of this AD. NOTE 2: Accomplishment of this modification in accordance with Canadair Service Bulletin 215-389, dated November 15, 1988, prior to the effective date of this AD, is considered acceptable for compliance with this paragraph. (e) 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 3: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the New York ACO. (f) 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. (g) The inspections shall be done in accordance with Canadair Alert Service Bulletin 215-A363, dated March 16, 1987. The modification shall be done in accordance with Canadair Service Bulletin 215-389, Revision 1, dated September 30, 1991. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Bombardier, Inc., Canadair Aerospace Group, P.O. Box 6087, Station Centre-ville, Quebec H3C 3G9, Canada. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, New York Aircraft Certification Office, Engine and Propeller Directorate, 10 Fifth Street, Third Floor, Valley Stream, New York; orat the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (h) This amendment becomes effective on June 21, 1996.