Airworthiness Directive · Amendment 39-19208 · Fuel
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 737-100, -200, -200C, -300, -400, -500 series airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, -200C, -300, -400, -500 series airplanes. This AD was prompted by a report of wire damage on a fuel boost pump power cable, and a separate report of a fuel tank explosion on a similarly equipped airplane. This AD requires the installation of new shielded wire bundles and convoluted liners within fuel tank conduits, and revision of the maintenance or inspection program, as applicable, to incorporate certain airworthiness limitations (AWLs). We are issuing this AD to address the unsafe condition on these products.
(1) For Group 1 and Group 2 airplanes identified in Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017: Except as required by paragraph (j) of this AD, at the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017, do all applicable actions identified as required for compliance (“RC”) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017.
(2) For airplanes identified as Group 3 in Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017: Within 120 days after the effective date of this AD, inspect the airplane and do all applicable corrective actions using a method approved in accordance with the procedures specified in paragraph (l) of this AD.
Within 60 days after the effective date of this AD: Revise the maintenance or inspection program, as applicable, to incorporate the applicable Airworthiness Limitations (AWLs) from Boeing 737-100/200/200C/300/400/500 Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs), D6-38278-CMR, dated May 2016 or November 2017, as identified in paragraphs (h)(1) and (h)(2) of this AD.
(1) 28-AWL-18 and 28-AWL-26, “Fuel Boost Pump Wires In Conduit Installation—In Fuel Tank,” for Boeing Model 737-100, -200, -200C series airplanes.
(2) 28-AWL-18 and 28-AWL-25, “Fuel Boost Pump Wires In Conduit Installation—In Fuel Tank,” for Boeing Model 737-300, -400, -500 series airplanes.
After the maintenance or inspection program, as applicable, has been revised as required by paragraph (h) of this AD, no alternative CDCCLs may be used unless the CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (l) of this AD.
For purposes of determining compliance with the requirements of this AD: Where Boeing Alert Service Bulletin 737-28A1273, Revision 1, dated March 14, 2017, uses the phrase “the original issue date of this service bulletin,” this AD requires using “after the effective date of this AD.”
Accomplishment of the actions required by paragraph (g) of this AD terminates all requirements of AD 2007-24-02.
