Airworthiness Directive · Amendment 39-18135 · Fuel
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 777-200, -200LR, -300ER, and 777F series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 777-28-0083, Revision 1, dated March 6, 2015.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300ER, and 777F series airplanes. This AD was prompted by a report of a jettison fuel pump that was shut off by the automatic shutoff system during the center tank fuel scavenge process on a short-range flight and a subsequent failure analysis of the fuel scavenge system. This AD requires making wiring changes, modifying certain power panels, installing electrical load management system 2 (ELMS2) software, and accomplishing a functional test. We are issuing this AD to prevent extended dry running of the jettison fuel pumps, which can be a potential ignition source inside the main fuel tanks, and consequent fuel tank fire or explosion in the event that the jettison pump overheats or has an electrical fault.
(1) For Groups 1 through 4 airplanes, as identified in Boeing Special Attention Service Bulletin 777-28-0083, Revision 1, dated March 6, 2015: Within 36 months after the effective date of this AD, make wiring changes, modify power panels P110 and P210, install electrical load management system 2 (ELMS2) software, and accomplish the functional test and all applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-28-0083, Revision 1, dated March 6, 2015. Do all applicable corrective actions before further flight.
(2) For Group 5 airplanes, as identified in Boeing Special Attention Service Bulletin 777-28-0083, Revision 1, dated March 6, 2015: Within 12 months after the effective date of this AD, install ELMS2 software, and accomplish the functional test and all applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-28-0083, Revision 1, dated March 6, 2015. Do all applicable corrective actions before further flight.
Note 1 to paragraph (g) of this AD: GE Aviation Service Bulletin 5000ELM-28-075, Revision 1, dated August 5, 2014; and GE Aviation Service Bulletin 6000ELM-28-076, Revision 1, dated August 5, 2014; are additional sources of guidance for modifying the P110 and P210 panels, respectively.
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
