Tough B737-800 question
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Join Date: Jul 2006
Location: Norway
Age: 41
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Tough B737-800 question
Hello
Here is a tough B737-800 question:
When one experiences a sudden N1 seizure one looses the minimum and maximum buffet onset tapes on the associated onside speedbar and is given a 'SPD LIM' indication beneath the speedbar. Then, if one sets the engine start switches to 'cont', one gains them back.
Why is this?
The EEC alternator shuts down if N2 drops below 15% and is coupled to the transfer bus when the switch is set to 'cont'. But then I can't see why that should be applicable. The buffet onset tapes collect information on weight from the FMC and speed and AoA from the ADIRU and computes it in the SMYD before sending the information to the DEU.
How can a U/S EEC affect this?
A definitive answer would be of great interest
Here is a tough B737-800 question:
When one experiences a sudden N1 seizure one looses the minimum and maximum buffet onset tapes on the associated onside speedbar and is given a 'SPD LIM' indication beneath the speedbar. Then, if one sets the engine start switches to 'cont', one gains them back.
Why is this?
The EEC alternator shuts down if N2 drops below 15% and is coupled to the transfer bus when the switch is set to 'cont'. But then I can't see why that should be applicable. The buffet onset tapes collect information on weight from the FMC and speed and AoA from the ADIRU and computes it in the SMYD before sending the information to the DEU.
How can a U/S EEC affect this?
A definitive answer would be of great interest
Thread Starter
Join Date: Jul 2006
Location: Norway
Age: 41
Posts: 122
Likes: 0
Received 0 Likes
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I am trying to utilize the knowledge of both flying personnel and technical personnel. Nothing wrong with that. But no answer available from the technicians out there?
