Airworthiness Directive · Amendment 39-12008 · Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) Series Airplanes
Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) Series Airplanes
The following airplanes, certificated in any category:
| Model | Serial Nos. |
|---|---|
| CL-600-1A11 (CL-600) | 1004 though 1085 inclusive. |
| CL-600-2A12 (CL-601) | 3001 through 3066 inclusive. |
| CL-600-2B16 (CL-601-3A and CL-601-3R) | 5001 through 5194 inclusive. |
| CL-600-2B16 (CL-604) | 5301 through 5392 inclusive. |
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.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model CL-600-1A11 (CL-600), CL-600- 2A12 (CL-601), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) series airplanes. This action requires installation of protection shields in the wheel bay of the main landing gear (MLG). This action is necessary to prevent water, ice or slush accumulation on the aileron quadrants and/or control cable pulleys in the wheel bay of the MLG during ground roll. Such water, ice or slush accumulation could subsequently freeze during the climb to cruise altitude and cause stiffness in the aileron controls, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
To prevent water, ice, or slush accumulation on the aileron quadrants and/or control cable pulleys in the wheel bay of the main landing gear (MLG) during ground roll, which could subsequently freeze during the climb to cruise altitude and cause stiffness in the aileron controls and reduced controllability of the airplane, accomplish the following:
(a) Within 45 days after the effective date of this AD, install protection shields in the wheel bay of the MLG, per the following applicable Bombardier service bulletin:
| Model | Bombardier service bulletin | Service bulletin date |
|---|---|---|
| CL-600-1A11 (CL-600) | 600-0684 | July 15, 1998 |
| CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and CL-601-3R) | 601-0507 | June 30, 1998 |
| CL-600-2B16 (CL-604) | 604-32-007 | June 30, 1998 |
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.
