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Old 15th February 2007 | 02:51
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nnc0
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Joined: May 2005
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From: On a good day - at sea
Pretty much every A319/A320 using Eaton Fuel pumps has to comply with the same OEB.

Basically you risk an in tank explosion anytime the CTR TK pumps are started with less than 2000 kg fuel in the CTR TK.

The confusion might be because you weren't affected by the first AD concerning these pumps. Recapping Briefly - Eaton pumps manufactured after s/n 6137 (?) were assembled by machines. The torque on the some motor housing nuts wasn't calibrated correctly with the result that they fell off and the bolt they were attached to dropped into the motor windings exposing the tank to possible arcing at startup. Subsequently, all Eaton pumps manufactured after pump s/n 6137 needed to be removed and fixed.

Now jump ahead 6 months. Subsequent investigations showed that manually assembled pumps are also subject to the same problem. Airbus tell me that a new AD on this will be issued in April directing that these manually assembled pumps must be operated per the OEB.

And just to clarify a couple of things or point out my own misunderstanding-. The CTR TK Pumps cannot be started anytime you have less than 2000 kg, they need to be OFF anytime there is less than 3000kg unless the fuel is required to continue the flight at which time you must leave them ON until CTR TK est depleted.
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