Airworthiness directives › 2022-20-09
AD 2022-20-09 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: BD-700-2A12. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc., Model BD-700-2A12 airplanes, certificated in any category, serial numbers 70006, 70007, 70009 through 70019 inclusive, 70021 through 70029 inclusive, and 70031.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 21 months after the effective date of this AD: Inspect the affected bleed air ducts and surrounding structure for minimum clearance and damage (wear or chafing), and do all applicable corrective actions in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 700-36-7502, dated October 28, 2020. Do all applicable corrective actions before further flight.
Unsafe condition
This AD was prompted by reports of insufficient clearance between the surrounding structure/skin of the aircraft and select bleed air ducts that supply the wing ice protection system (WIPS) in the rear fuselage. The FAA is issuing this AD to address possible interference between the high pressure (HP) shroud and the surrounding structures, which could compromise the HP ducting shroud's capability to provide bleed air leak routing and result in a bleed air leak being undetected. A significant undetected bleed air leak could expose the surrounding structure to heat stress, resulting in reduced structural integrity of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1