Airworthiness Directive · Amendment 39-21616 · Fuselage
MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
This AD applies to MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, having serial numbers 15057, 15063 through 15065 inclusive, 15071, 15074, 15079, 15087, 15090, 15106, 15111, 15113, 15115, and 15117.
The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a report that the lower aft outboard supporting structure of galley 2 does not meet certification requirements for all flight and/or emergency landing loads. This AD requires modifying the floor structure between certain fuselage stations. The FAA is issuing this AD to address the unsafe condition on these products.
Within 36 months after the effective date of this AD: Modify the floor structure between fuselage station (FS) 379.00 and FS 394.00 at right buttock line (RBL) 37.75 in accordance with paragraph 2.B. of the Accomplishment Instructions of MHI RJ Service Bulletin 670BA-53-060, Revision A, dated September 17, 2020.
