Airworthiness Directive · Amendment 39-22584 · Pneumatic
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
This AD applies to all MHI RJ Aviation ULC (Type Certificate previously held by Bombardier, Inc.) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This AD was prompted by a report of missing insulation in the engine pylon area. This AD requires, for certain airplanes, inspecting the engine pylon structure for discrepancies and repair if necessary. This AD also requires revising the existing maintenance or inspection program, as applicable, to incorporate a new certification maintenance requirement (CMR) task. The FAA is issuing this AD to address the unsafe condition on these products.
For airplanes having serial numbers 7031, 7045, 7069, 7078, 7089, 7102, 7110, 7168, 7188, 7203, 7212, 7217, 7229, 7231, 7236, 7243, 7257, 7258, 7269, 7271, 7276, 7284, 7290, 7302, 7304, 7306, 7310, 7328, 7339, 7342, 7355, 7358, 7360, 7401, 7404, 7437, 7441, 7448, 7458, 7474, 7476, 7479, 7495, 7502, 7503, 7517, 7527, 7530, 7532, 7548, 7551, 7574, 7575, 7579, 7582, 7586, 7588, 7599, 7600, 7606, 7609, 7623, 7632, 7648, 7657, 7658, 7664, 7667, 7674, 7681, 7682, 7683, 7687, 7715, 7727, 7743, 7748, 7749, 7750, 7758, 7760, 7769, 7780, 7810, 7817, 7818, 7821, 7822, 7857, 7859, 7871, 7873, 7889, 7892, 7895, 7909, 7912, 7913, 7920, 7922, 7923, 7926, 7929, 7932, 7935, 7937, 7954, 7961, 7964, and 8011: Within 48 months or 6,600 flight hours, whichever occurs first after the effective date of this AD, do a detailed visual inspection for discrepancies of spar FS654.50, spar FS672.20, and the firewall, in accordance with Section 2.B. of the Accomplishment Instructions of MHI RJ Service Bulletin 601R-54-006, Revision A, dated May 24, 2023. If any discrepancies are found, before further flight, repair using a method approved by the Manager, International Validation Branch, FAA; or Transport Canada or MHI RJ Aviation ULC's Transport Canada Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature.
Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in MHI RJ Temporary Revision 2A-77, dated May 8, 2023, for certification maintenance requirements task number C36-12-133-01. The initial compliance time for doing the task is within 48 months or 6,600 flight hours, whichever occurs first after the effective date of this AD.
After the existing maintenance or inspection program has been revised as required by paragraph (h) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions and intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (k)(1) of this AD.
