Airworthiness Directive · Amendment 39-17329 · Flight controls
Bombardier, Inc. Airplanes
Superseded. A later AD replaced this one: AD 2016-23-07. Comply with the one in force.
(1) This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, all serial numbers.
(2) This AD requires revisions to certain operator maintenance documents to include new actions (e.g., inspections) and/or Critical Design Configuration Control Limitations (CDCCLs). Compliance with these actions and/or CDCCLs is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by this AD, the operator may not be able to accomplish the actions described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (m)(1) of this AD. The request should include a description of changes to the required actions that will ensure the continued operational safety of the airplane.
We are adopting a new airworthiness directive (AD) for all Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by a report that the safe life limit and inspection requirements for the horizontal stabilizer trim actuator (HSTA) attachment pins and trunnions were not listed in the Airworthiness Limitations Section of the maintenance program. This AD requires inspecting the trunnions and upper and lower pins for gouges, scratches, and corrosion, and replacing the trunnions if necessary; and adding serial numbers and new part numbers to certain trunnions, and upper and lower pins. This AD also requires revising the maintenance program to incorporate the information specified in certain temporary revisions of the limitations section. We are issuing this AD to detect and correct cracking, gouges, scratches, and corrosion of the HSTA attachment pins and trunnions, which could result in failure of these pins and trunnions and consequent disconnection of the horizontal stabilizer and subsequent loss of controllability 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.
At the earliest of the times specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD: Do a detailed inspection of the trunnions, upper pins, and lower pins identified in table 1 to paragraphs (g) and (h) of this AD, for gouges, scratches, and corrosion, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-160, Revision A, dated October 3, 2012.
(1) Within 5,000 flight hours after the effective date of this AD.
(2) Within 60 months after the effective date of this AD.
(3) Before the accumulation of 40,000 total flight cycles, or within 60 days after the effective date of this AD, whichever occurs later.
| Part name | Part No. |
|---|---|
| Upper Pin | 600-92384-5 |
| Upper Pin | 600-92384-7 |
| Upper Pin | 601R92310-1 |
| Lower Pin | 600-92383-5 |
| Lower Pin | 600-92383-7 |
| Lower Pin | 601R92309-1 |
| Trunnion | 601R92386-1 |
If, during any inspection required by paragraph (g) of this AD, any gouges, scratches, or corrosion are found: Before further flight, replace the affected part with a part other than one identified in table 1 to paragraphs (g) and (h) of this AD, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-160, Revision A, dated October 3, 2012.
If, during any inspection required by paragraph (g) of this AD, no gouges, scratches or corrosion are found: Before further flight, add serial numbers and new part numbers to the trunnions, upper pins, and lower pins, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-27-160, Revision A, dated October 3, 2012; or using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA.
