Airworthiness Directive · Amendment 39-21651 · Electrical power
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 767-300 series airplanes, certificated in any category, that have been modified to a Bedek Division Special Freighter (BDSF), in accordance with FAA Supplemental Type Certificate (STC) ST02040SE (the freighter configuration is designated as 767-300BDSF), and which are listed in paragraph 1.A., “Effectivity,” of IAI-Aviation Group Alert Service Bulletin 368-24-098, Revision 1, dated June 2021.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-300 series airplanes as modified by a certain supplemental type certificate (STC). This AD was prompted by a report that the electrical diagram for the C9066 circuit breaker connection (wiring) for the "Main Deck Oxygen Alert Control" is erroneous and might have resulted in incorrect installation. This AD requires inspecting the wiring connection common to the C9066 circuit breaker and, if necessary, making changes to the wiring connection and testing the main deck oxygen alert system. The FAA is issuing this AD to address the unsafe condition on these products.
Within 10 days after the effective date of this AD, perform a detailed inspection of the wiring connection common to the C9066 circuit breaker to make sure 20 AWG wire is connected to terminal 1 and the BUS is connected to terminal 2, in accordance with steps 1. through 3. of the Accomplishment Instructions of IAI-Aviation Group Alert Service Bulletin 368-24-098, Revision 1, dated June 2021. If 20 AWG wire is not connected to terminal 1 or the BUS is not connected to terminal 2, before further flight, make changes to the wiring connection and test the main deck oxygen alert system, in accordance with steps 4. through 13. of the Accomplishment Instructions of IAI-Aviation Group Alert Service Bulletin 368-24-098, Revision 1, dated June 2021.
Although IAI-Aviation Group Alert Service Bulletin 368-24-098, Revision 1, dated June 2021, specifies to report inspection findings, this AD does not require any report.
