Airworthiness directives › 2021-08-03
AD 2021-08-03 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Applicability*9
This AD applies to all MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) airplanes identified in paragraphs (c)(1) through (5) of this AD, certificated in any category. (1) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes. (2) Model CL-600-2C11 (Regional Jet Series 550) airplanes. (3) Model CL-600-2D15 (Regional Jet Series 705) airplanes. (4) Model CL-600-2D24 (Regional Jet Series 900) airplanes. (5) Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
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 [Bombardier] CRJ700/900/1000 Series Regional Jet Temporary Revision ALI-0721, dated December 20, 2019, into Part 2 of the Bombardier CRJ700/900/1000 Maintenance Requirements Manual. The initial compliance time for doing the tasks is at the time specified in [Bombardier] CRJ700/900/1000 Series Regional Jet Temporary Revision ALI-0721, dated December 20, 2019, or within 60 days after the effective date of this AD, whichever occurs later.
Unsafe condition
This AD was prompted by a determination that a new or more restrictive airworthiness limitation is necessary. The FAA is issuing this AD to address failed telescopic ducts in the wing anti-ice system, which could result in loss of the wing anti-ice system function, slat skew, slat jam, structural damage to the slat panel, and loss of the slat panel, possibly resulting in reduced control of the airplane.
Affected ADs
None.
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