Airworthiness directives › 2023-04-17
AD 2023-04-17 Airworthiness Directives; The Boeing Company Airplanes
Models named: 737-600, -700, -700C, -800, -900, -900ER series, 737-8, 737-9. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes identified in paragraphs (c)(1) and (2) of this AD, certificated in any category. (1) Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, as identified in Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022. (2) Model 737-8 and 737-9 airplanes, as identified in Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For the airplanes identified in paragraph (c)(1) of this AD, except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022. Note 1 to paragraph (g)(1): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 737-38A1072, dated February 25, 2022, which is referred to in Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022. (2) For the airplanes identified in paragraph (c)(2) of this AD, except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022. Note 2 to paragraph (g)(2): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 737-38A1073, dated February 25, 2022, which is referred to in Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022.
Unsafe condition
This AD was prompted by reports of damage to the auxiliary power unit (APU) fuel line shroud located aft of the aft cargo area; investigation revealed that the placement of the pressure switch wire clamp assembly and the fastener allowed interference of the fastener against the APU fuel line shroud. The FAA is issuing this AD to address interference of the fastener against the APU fuel line shroud, possibly resulting in a damaged APU fuel line shroud and consequent failure of the APU fuel hose, which could result in a flammable fluid leak in an ignition zone.
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