Airworthiness directives › 2022-20-03
AD 2022-20-03 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Models named: CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, CL-600-2E25. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) airplanes identified in paragraphs (c)(1) through (4) of this AD, certificated in any category. (1) Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) and CL-600-2C11 (Regional Jet Series 550) airplanes, serial numbers 10346 and 10347. (2) Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15413 through 15484 inclusive. (3) Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers 19049 through 19064 inclusive. (4) Model CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24 and CL-600-2E25 airplanes equipped with tube part numbers installed after the dates indicated in Section 1.A.(2) of MHI RJ Service Bulletin (SB) 670BA-35-016, Revision B, dated December 17, 2021.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 8,800 flight hours after the effective date of this AD, clean and flush the crew oxygen system, in accordance with the Accomplishment Instructions of MHI RJ Service Bulletin 670BA-35-016, Revision B, dated December 17, 2021.
Unsafe condition
This AD was prompted by laboratory tests that showed that the oxygen tubes of the crew oxygen system may be contaminated with lubricants, as a result of the manufacturing and cleaning procedures. The FAA is proposing this AD to address the contaminated oxygen tubes of the crew oxygen system, which could lead to a fire within the oxygen tubes, or a health hazard related to the inhalation of lubricant fumes when the masks are in use.
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