Airworthiness Directive · Amendment 39-16471 · Landing gear
Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 7003 and subsequent; certificated in any category.
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 1,600 flight hours or 18 months after the effective date of this AD, whichever occurs first: Do an inspection to determine the serial number and identification markings on the selector valve of the NLG and the door selector valve of the NLG, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-32-104, dated March 3, 2009. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number and identification markings of the selector valve and the door selector valve can be conclusively determined from that review.
(2) For any airplane having either the selector valve of the NLG or the door selector valve of the NLG that have a serial number outside the range 0001 through 2126 inclusive, suffix “T” identification, or “SB750006000-1” marking, no further action is required for that valve.
(3) If, during any inspection required by paragraph (f)(1) of this AD, any selector valve of the NLG or any door selector valve of the NLG is found that does not have any serial number or identification marking specified in paragraph (f)(2) of this AD: Before further flight after doing the inspection required by paragraph (f)(1) of this AD, inspect to determine the torque value and correct lockwire installation of the valve, and modify (replace, rework, or re-identify) the valve, as applicable, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-32-104, dated March 3, 2009.
(4) For airplanes having part number (P/N) 601R75146-1 (Tactair P/N 750006000), serial number 001 thru 0767: Modification of the valve accomplished before the effective date of this AD in accordance with Bombardier Service Bulletin 601R-32-090, Revision B, dated December 12, 2006; and Bombardier Service Bulletin Revision C, dated March 3, 2009; are considered acceptable for compliance with the requirements of this AD for that valve.
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
