Airworthiness directives › 2018-04-04
AD 2018-04-04 Airworthiness Directives; Bombardier, Inc., Airplanes
Applicability*9
This AD applies to the airplanes identified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD, certificated in any category. (1) Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10003 through 10342 inclusive. (2) Bombardier, Inc., Model CL-600-2D15 (Regional Jet Series 705) and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 through 15367 inclusive. (3) Bombardier, Inc., Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers 19001 through 19041 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For airplanes on which a left flight deck windshield or a left flight deck side window was replaced as specified in Bombardier Aircraft Maintenance Manual (AMM) task 56-11-01-400-801, Revision 48, dated March 25, 2015, or any previous revision of that task; or Bombardier AMM task 56-12-01-400-801, Revision 48, dated March 25, 2015, or any previous revision of that task: At the applicable time specified in paragraph (g)(1) or (g)(2) of this AD, perform a water spray test and do a general visual inspection of the left flight deck windshield and left flight deck side window for evidence of water ingress into the flight deck, in accordance with Part A of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-56-003, Revision A, dated April 13, 2016. If water is found in the flight deck compartment: Before further flight, remove the water, and apply sealant on the left flight deck windows in accordance with Part C of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-56-003, Revision A, dated April 13, 2016. (1) For airplanes on which Bombardier in-service ModSum IS67033110181 has not been incorporated: Within 2,500 flight hours after the effective date of this AD. (2) For airplanes on which Bombardier in-service ModSum IS67033110181 has been incorporated: Within 6,600 flight hours after the effective date of this AD.
Unsafe condition
This AD was prompted by several incidents of electrical shorting and sparks caused by de-icing fluid leaks between flight deck windshields and side windows. We are issuing this AD to detect and correct de-icing fluid entering the flight deck, which could damage the flight deck floodlight wires and electrical connections, and ultimately could lead to a fire in the flight deck compartment.
Affected ADs
None.
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