Airworthiness Directive · Amendment 39-15900 · Flight controls
Bombardier Model CL-600-2B19 (Regional Jet Series 100 and 440) Airplanes
This AD applies to all Bombardier Model CL-600-2B19 (Regional Jet series 100 and 440) airplanes, certificated in any category, with serial numbers (S/Ns) 7003 and later, equipped with inboard flap actuators part number (P/N) 601R93101-21 (Eaton P/N 852D100-21) or P/N 601R93101-25 (Eaton P/N 852D100-25).
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Within 100 flight cycles after the effective date of this AD: Inspect the serial number of each of the flap actuators having P/N 601R93101-21 and P/N 601R93101-25 installed on the airplane. If the serial number of the inspected actuator is listed in paragraph (f)(1)(i) or (f)(1)(ii) of this AD, before further flight, replace the flap actuator with an actuator that has a serial number not listed in paragraph (f)(1)(i), (f)(1)(ii), or (f)(2) of this AD, in accordance with Section 27-53-01 of Bombardier (Canadair) Regional Jet Aircraft Maintenance Manual (AMM), CSP A-001, Revision 40, dated September 10, 2008. If any of the serial numbers found have a suffix “A,” replacement is not required. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the flap actuator can be conclusively determined from that review.
(i) For P/N 601R93101-21: Serial numbers 7772, 7773, 7774, 7775, 7776, 7778, 7779, 7780, 7781, 7782, 7784, 7786, 7787, 7788, 7790, 7791, 7793, 7797, 7798, 7799, 7801, 7802, 7803, 7804, 7805, 7806, 7807, 7808, 7810, 7813, 7815, 7816, 7817, 7818, 7819, 7820, 7821, 7825, 7826, 7827, 7828, and 7829.
(ii) For P/N 601R93101-25: Serial numbers 7783 and 7796.
Note 1: Replacing an existing flap actuator P/N 601R93101-21 with a P/N 601R93101-25 that does not have a serial number listed in paragraph (f)(2) of this AD also satisfies the requirements of paragraph (f)(1) of this AD.
(2) Within 500 flight cycles after the effective date of this AD: Inspect the serial number of each of the flap actuators P/N 601R93101-25 installed on the airplane. If the serial number is 3278, 3401, 3512, 3526, 3597, 3599, 3606, 3738, 3806, 3861, 4066, 4284, 4315, 4401, 4499, 4538, 4582, 4658, 4979, 5007, 5094, 6422, 6969, or 7867, before further flight, replace the flap actuator having P/N 601R93101-25 with a flap actuator having a serial number not identified in this paragraph or paragraph (f)(1) of this AD. Do the replacement in accordance with Section 27-53-01 of Bombardier (Canadair) Regional Jet AMM, CSP A-001, Revision 40, dated September 10, 2008. If any of the serial numbers found have a suffix “B,” replacement is not required. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the flap actuator can be conclusively determined from that review.
(3) As of the effective date of this AD, replacement of a flap actuator having P/N 601R93101-21 or 601R93101-25 with a serial number identified in paragraph (f)(1)(i), (f)(1)(ii), or (f)(2) of this AD is not allowed on any airplane unless the serial number of the actuator listed in paragraph (f)(1)(i) and (f)(1)(ii) of this AD is identified with suffix “A,” and the serial number of the actuator listed in paragraph (f)(2) is identified with suffix “B.”
Note 2: Serial number suffix “A” or “B” indicates that a conforming gear set has been installed.
Note 3: This AD differs from the MCAI and/or service information as follows: No differences.
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.
