Airworthiness directives › 2016-11-03
AD 2016-11-03 Airworthiness Directives; The Boeing Company Airplanes
Models named: 777-200, -200LR, -300, -300ER, -777F series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 777-200, -200LR, -300, -300ER, and -777F series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 777-28-0078, Revision 1, dated April 27, 2015.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For airplanes identified in Boeing Special Attention Service Bulletin 777-28-0078, Revision 1, dated April 27, 2015, except for Group 10 airplanes on which the actions specified in Boeing Service Bulletin 777-28-0060; or Work Package 2 of the Accomplishment Instructions of Boeing Service Bulletin 777-28-0062, have not been accomplished: Within 60 months after the effective date of this AD, do the applicable actions specified in paragraphs (g)(1) through (g)(6) of this AD; and do all applicable related investigative and corrective actions; in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-28-0078, Revision 1, dated April 27, 2015. Do all applicable related investigative and corrective actions before further flight. (1) Do applicable mechanical changes to the main fuel tank water scavenge system and center fuel tank fuel scavenge system. (2) Install relays and related equipment on the P301 and P302 panels in the main equipment center. (3) Do applicable wiring changes between the P105, P110, and P301 panels, and between the P200, P205, P210, and P302 panels. (4) Do wiring changes in the P105 panel. (5) Install new electrical load management system 2 (ELMS2) software. (6) Do a functional test consisting of operational tests, a leak test, system tests, and a fuel scavenge system functional test. If any of the tests fail, before further flight accomplish corrective actions and repeat the test and applicable corrective actions until the test is passed.
Unsafe condition
This AD was prompted by reports of unreliable performance of the fuel scavenge system. We are issuing this AD to prevent fuel exhaustion and subsequent power loss of all engines due to loss of capability to scavenge fuel in the center fuel tank.
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