rami Posted December 30, 2011 Share Posted December 30, 2011 how can we dump fuel from main tanks in case of dump pump failure or dump valve failure? Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted December 31, 2011 Share Posted December 31, 2011 Depends on what model aircraft your on. Need to know a little more info... Quote Link to comment Share on other sites More sharing options...
rami Posted January 1, 2012 Author Share Posted January 1, 2012 c-130H Quote Link to comment Share on other sites More sharing options...
AMPTestFE Posted January 4, 2012 Share Posted January 4, 2012 Which H? There's a difference. H1 - you can't. H2 and up, switch the dump pump on for the affected tank, open the external crossfeed valve, then open the crossfeed valve on the affected engine. The tank will empty completely if allowed to this way...no stopping at 1800 or 2100 lbs. Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted January 6, 2012 Share Posted January 6, 2012 With your affected MAIN tank (BOOST) Pump "ON" Then follow AMPTestFE's instructions... "open the external crossfeed valve, then open the crossfeed valve on the affected engine. The tank will empty completely if allowed to this way...no stopping at 1800 or 2100 lbs." The Boost pump sits in the surgebox and will drain the tank to the point where the engine will be fuel starved and flame out. If you are Dumping from other tanks (at the same time) with the DUMP pumps your wings will become out of balance VERY rapidly. Proceedure.... Main Tank Dump Pump/Dump Valve Failure If a main tank dump pump or dump valve fails to operate, fuel may be dumped by use of the following procedures: 1. Aft external tank pump circuit breakers (on affected side) — Pulled 2. Main tank BOOST PUMP switch — ON 3. Main tank CROSSFEED VALVE switch — OPEN 4. Auxiliary tank CROSSFEED VALVE switch — OPEN 5. BYPASS VALVE switch (on affected side) — OPEN 6. External tank DUMP PUMP switch (on affected side) — ON 7. INTER CONN valve switch — FLOW 8. DUMP VALVE switch — OPEN 9. Monitor fuel dumping 10. DUMP PUMP switches — OFF 11. INTER CONN valve switches — NO FLOW 12. DUMP VALVE switches — NORM Quote Link to comment Share on other sites More sharing options...
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