PPRuNe Forums - View Single Post - Avianca A332, Santa Cruz fuel leak, lost 17 tons!
Old 19th Sep 2013, 19:49
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VNAV PATH
 
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Check list use

Fuel leak Check list is for leaks between spar valve ( low pressure cutoff valve) and engine . There is no check list ( boeing planes too.. ) dealing with fueĺ leaks before the spar valve wich is shut off by ENG MASTER shut off , such as fuel tanks .

Bolded text by myself .




CASE 1
: IF ONE INNER TANK DEPLETES FASTER THAN THE OTHER BY AT LEAST 500 kg IN LESS THAN 30 min:

An engine leak may still be suspected. Therefore:

THR LEVER (engine of affected inner tank) . . . . . . . . . . . . . . . . . . . . . . IDLE

ENG MASTER (engine of affected inner tank) . . . . . . . . . . . . . . . . . . . . .OFF

FUEL LEAK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .MONITOR

❖ If leak stops:

If the fuel quantity of the affected inner tank stops decreasing, the engine leak is confirmed and stopped.

L + R CTR PUMPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON

T TANK FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AUTO

WING X FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . USE AS RQRD The crossfeed valve can now be opened to re-balance fuel quantity, or to enable use of fuel from both wings. Do not restart the engine.

❖ If leak continues (after engine shutdown):

If the fuel quantity of the affected inner tank continues to decrease, a leak from the wing may be suspected.

ENGINE RESTART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CONSIDER

FUEL LOSS REDUCTION proc . . . . . . . . . . . . . . . . . . . . . . .CONSIDER

CAUTION 末末末末末末末末末末末末末末末末末末末末末末末末末

Do not apply the FUEL IMBALANCE procedure. Approach and landing

Last edited by VNAV PATH; 19th Sep 2013 at 19:50.
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