Airworthiness Directive · Amendment 39-22364 · Fuel
The Boeing Company Airplanes
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.
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 737-8 and 737-9 airplanes, and certain Model 737- 600, -700, -700C, -800, -900, and -900ER series airplanes. 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 its fastener allowed interference of the fastener against the APU fuel line shroud. This AD requires inspecting the APU fuel line shroud for damage, inspecting the pressure switch wire clamp for correct bolt orientation and horizontal distance from the APU fuel line shroud, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
(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.
(1) Where the Compliance Time columns of the tables in the “Compliance” paragraphs of Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022, use the phrase “the original issue date of Requirements Bulletin 737-38A1072 RB,” this AD requires using “the effective date of this AD.”
(2) Where the Compliance Time columns of the tables in the “Compliance” paragraphs of Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022, use the phrase “the original issue date of Requirements Bulletin 737-38A1073 RB,” this AD requires using “the effective date of this AD.”
(3) Where the Action column in Table 1 of Boeing Alert Requirements Bulletin 737-38A1072 RB, dated February 25, 2022, uses the phrase “Replace existing APU fuel line shroud with new or repaired shroud,” this AD allows the installation of a “serviceable” APU fuel line shroud. A “serviceable” APU fuel line shroud is defined as an APU fuel line shroud that has been maintained using methods acceptable to the FAA and identified by the FAA as airworthy.
(4) Where the Action column in Table 1 of Boeing Alert Requirements Bulletin 737-38A1073 RB, dated February 25, 2022, uses the phrase “Replace existing APU fuel line shroud with new or repaired shroud,” this AD allows the installation of a “serviceable” APU fuel line shroud. A “serviceable” APU fuel line shroud is defined as an APU fuel line shroud that has been maintained using methods acceptable to the FAA and identified by the FAA as airworthy.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
