Airworthiness Directive · Amendment 39-17146 · Flight controls
Bombardier, Inc. Airplanes
This AD applies to the Bombardier, Inc. airplanes, certificated in any category, as identified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes, serial numbers 413, 443, 450 through 452 inclusive, 456, 458, 462 through 465 inclusive, 467 through 470 inclusive, and 473 through 588 inclusive.
(2) Model DHC-8-400, -401, and -402 airplanes, serial numbers 4001, 4003 through 4006 inclusive, and 4008 through 4197 inclusive.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8 series airplanes. This AD was prompted by reports that various pushrods had been manufactured with tubes having the incorrect heat treatment. This AD requires replacing the affected pushrod assembly. We are issuing this AD to prevent loss of rudder control, reduced directional control of the airplane on the ground, or a jammed nose landing gear (NLG) door that could prevent the NLG from retracting or extending.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
For Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes, serial numbers 464, 508, 511 through 513 inclusive, and 515 through 588 inclusive: Within 3,000 flight hours after the effective date of this AD, replace the affected brake rudder control pushrod, part number (P/N) 82710274-001, by incorporating Modsum 8Q101334, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8-27-100, Revision A, dated March 22, 2011.
For Model DHC-8-201, -202, -301, -311, and -315 airplanes, serial numbers 552 through 588 inclusive: Within 6,000 flight hours after the effective date of this AD, replace nose landing gear door pushrod, P/N 83232012-001, by incorporating Modsum 8Q101335, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8-32-156, dated February 26, 2010.
For Model DHC-8-400, -401, and -402 airplanes, serial numbers 4003 through 4005 inclusive, 4009 through 4011 inclusive, 4016, 4017, and 4024 through 4072 inclusive: Within 6,000 flight hours after the effective date of this AD, replace nose landing gear door pushrod, P/N 83232012-001, by incorporating Modsum 4-113457, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-32-28, dated November 27, 2008.
For Model DHC-8-400, -401, and -402 airplanes, serial numbers 4001, 4003 through 4006 inclusive, and 4008 through 4072 inclusive: Within 3,000 flight hours after the effective date of this AD, replace brake rudder control pushrod, P/N 82710274-001, and rudder control pushrod, P/N 82710028-003, by incorporating Modsum 4-113455, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-27-21, Revision A, dated March 22, 2011.
For Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes, serial numbers 413, 443, 450 through 452 inclusive, 456, 458, 462 through 465 inclusive, 467 through 470 inclusive, and 473 through 588 inclusive: Within 3,000 flight hours after the effective date of this AD, replace rudder control pushrod, P/N 82710028-003, by incorporating Modsum 8Q101333, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8-27-99, dated October 10, 2008.
For Model DHC-8-400, -401, and -402 airplanes, serial numbers 4006, 4008, 4012 through 4015 inclusive, 4018 through 4023 inclusive, and 4073 through 4197 inclusive: Within 6,000 flight hours after the effective date of this AD, inspect the lot number of the pushrod, P/N 83232012-001, for the nose landing gear door mechanism, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-32-75, dated June 1, 2010.
(1) If the lot number of the pushrod does not match any of those listed in the table in paragraph 3.B.(2) of Bombardier Service Bulletin 84-32-75, dated June 1, 2010, no further action is required by this paragraph.
(2) If the lot number of the pushrod matches any of those listed in the table in paragraph 3.B.(2) of Bombardier Service Bulletin 84-32-75, dated June 1, 2010, before further flight, replace the pushrod, in accordance with paragraph 3.B., Rectification, of the Accomplishment Instructions of Bombardier Service Bulletin 84-32-75, dated June 1, 2010.
