Airworthiness Directive · Amendment 39-13907 · Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), 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), CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) Series Airplanes
This AD applies to the Bombardier airplanes, certificated in any category, that are listed in Table 1 of this AD.
| Bombardier model | Having serial numbers | Which have an angle of attack transducer (AOA) with the following part number |
|---|---|---|
| CL-600-1A11 (CL-600) series airplanes | 1004 through 1085 inclusive | 600-59154-5 |
| CL-600-2A12 (CL-601) series airplanes | 3001 through 3066 inclusive | 600-59154-5 |
| CL-600-2B16 (CL-601-3A and CL-601-3R) series airplanes | 5001 through 5194 inclusive | 600-59154-5 |
| CL-600-2B16 (CL-604) series airplanes | 5301 and subsequent | 600-59154-5 |
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604) series airplanes. This AD requires revising the airplane flight manual to provide the flightcrew with procedures and limitations for operating an airplane with out-of-tolerance angle of attack (AOA) transducers. This AD also requires repetitive linearity tests of the AOA transducers, and corrective action if necessary. This AD is prompted by a report of premature wear of the potentiometers in AOA transducers having a certain part number. We are issuing this AD to prevent a delay in the stall computer commands for stall warning, stick shaker, and stick pusher operation, due to premature wear of the potentiometers of the AOA transducers, which may cause the airplane to enter a stall condition, and result in loss of control of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 7 days after the effective date of this AD: Revise the Limitations, Performance, and Normal Procedures Sections of the applicable Canadair Challenger AFM by inserting the applicable Bombardier temporary revision (TR), as listed in Table 2 of this AD. Some TRs listed in Table 2 of this AD contain Product Support Publication (PSP) identifiers.
| Model | Temporary revision | PSP | Dated |
|---|---|---|---|
| CL-600-1A11 (CL-600) series airplanes | 600/20-2 | 600 (not stated in document) | October 15, 2004. |
| 600-1/15-2 | 600-1 (not stated in document) | October 15, 2004. | |
| CL-600-2A12 (CL-601) series airplanes | 601/12-2 | 601-1B-1 | October 15, 2004. |
| 601/13-2 | 601-1A-1 | October 15, 2004. | |
| 601/17-2 | 601-1B | October 15, 2004. | |
| 601/25-2 | 601-1A-18 (not stated in document) | October 15, 2004. | |
| CL-600-2B16 (CL-601-3A and -3R) series airplanes | 601/22-2 | 601A-1-1 | October 15, 2004. |
| 601/23-2 | 601A-1 | October 15, 2004. | |
| CL-600-2B16 (CL-604) series airplanes | 604/9-6 | 604-1 | October 15, 2004. |
Prior to the accumulation of 100 total flight hours on any AOA transducer, part number (P/N) 600-59154-5, since new, or within 50 flight hours after the effective date of this AD, whichever is later: Perform a linearity test of each AOA transducer by accomplishing all of the applicable actions specified in the Accomplishment Instructions of the applicable Bombardier alert service bulletin listed in Table 3 of this AD. Repeat the linearity test of each AOA transducer thereafter at intervals not to exceed 100 flight hours. Although the alert service bulletins specify to submit certain information to the manufacturer, this AD does not include such a requirement.
| For model— | Bombardier alert service bulletin | Dated | Excluding |
|---|---|---|---|
| CL-600-1A11 (CL-600) series airplanes | A600-0729 | October 14, 2004 | Appendix A |
| CL-600-2A12 (CL-601) series airplanes and CL-600-2B16 (CL-601-3A and -3R) series airplanes | A601-0571 | October 14, 2004 | Appendix A |
| CL-600-2B16 (CL-604) series airplanes | A604-27-026 | October 14, 2004 | Appendix A |
For any AOA transducer, P/N 600-59154-5, that does not pass any linearity test as required by paragraph (g) of this AD: Before further flight, replace the affected AOA transducer with a serviceable transducer by accomplishing the applicable actions specified in the Accomplishment Instructions of the applicable Bombardier alert service bulletin listed in Table 3 of this AD.
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.
