Airworthiness Directive · Amendment 39-18529 · Nacelles/pylons
Bombardier, Inc. Airplanes
Superseded. A later AD replaced this one: AD 2018-09-14. Comply with the one in force.
This AD applies to all the airplanes identified in paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD, certificated in any category.
(1) Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes.
(2) Bombardier, Inc. Model CL-600-2D15 (Regional Jet Series 705) airplanes.
(3) Bombardier, Inc. Model CL-600-2D24 (Regional Jet Series 900) airplanes.
(4) Bombardier, Inc. Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
We are adopting a new airworthiness directive (AD) for all Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes; Model CL-600-2D15 (Regional Jet Series 705) airplanes; Model CL-600-2D24 (Regional Jet Series 900) airplanes; and Model CL- 600-2E25 (Regional Jet Series 1000) airplanes. This AD requires a detailed visual inspection of the upper and lower engine pylons for protruding, loose, or missing fasteners; and repair, including applicable related investigative and corrective actions, if necessary. This AD was prompted by reports of loose or missing Hi-Lite fasteners on the upper and lower engine pylon structure common to the upper and lower pylon skin panels and engine thrust fitting. We are issuing this AD to detect and correct protruding, loose, or missing fasteners, which could result in structural failure of the engine pylons.
At the applicable time specified in paragraph (g)(1) or (g)(2) of this AD, do a detailed visual inspection for protruding, loose, or missing fasteners of the upper and lower engine pylons, in accordance with Bombardier Temporary Revision (TR) 54-0007, dated March 8, 2016, to the CRJ700/900/1000 Aircraft Maintenance Manual. Repeat the inspection thereafter at intervals not to exceed 1,500 flight hours.
(1) For airplanes that have accumulated more than 840 total flight hours as of the effective date of this AD: Inspect within 660 flight hours or 3 months, whichever occurs first, after the effective date of this AD.
(2) For airplanes that have accumulated 840 total flight hours or less as of the effective date of this AD: Inspect before the accumulation of 1,500 total flight hours.
If any protruding, loose, or missing fastener is found during any inspection required by paragraph (g) of this AD, before further flight, repair, including applicable related investigative and corrective actions, in accordance with Bombardier Repair Engineering Order (REO) 670-54-51-034, “Repair for Missing or Loose/Protruding Fasteners in Upper and Lower Pylon Skins FS 1088-FS 1098, PBL 69.3 L & RHS,” dated March 7, 2016, except where Bombardier REO 670-54-51-034, “Repair for Missing or loose/Protruding Fasteners in Upper and Lower Pylon Skins FS 1088-FS 1098, PBL 69.3 L & RHS,” dated March 7, 2016, specifies to contact Bombardier for further instruction, before further flight, repair using a method approved by the Manager, New York Aircraft Certification Office (ACO), ANE-170, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval Organization (DAO).
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.
Aircraft
