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Search: Posts Made By: BOAC
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Forum: Tech Log
9th Sep 2013, 13:51
Replies: 33
Views: 7,431
Posted By BOAC

A bit thin on information there, misd - what...

A bit thin on information there, misd - what was/were the fault/s?
Forum: Tech Log
9th Sep 2013, 07:52
Replies: 33
Views: 7,431
Posted By BOAC

- getting slightly off topic here? The figures...

- getting slightly off topic here? The figures you quote refer to a main generation failure situation, not a battery charger failure, in which we have established the busses will be powered normally,...
Forum: Tech Log
6th Sep 2013, 17:10
Replies: 33
Views: 7,431
Posted By BOAC

- hmm! Tell that to my squadron's 'Intelligence...

- hmm! Tell that to my squadron's 'Intelligence Officer' whose VW Golf's clock flattened his battery in 10 days...................Still, I think we can safely assume the 757's battery will last at...
Forum: Tech Log
6th Sep 2013, 07:42
Replies: 33
Views: 7,431
Posted By BOAC

Perhaps to summarise, then, looking at glenbb's...

Perhaps to summarise, then, looking at glenbb's list of HBB services it appears that unless some of the 'valves' etc are electrically powered in their normal 'operating' position the actual current...
Forum: Tech Log
5th Sep 2013, 17:59
Replies: 33
Views: 7,431
Posted By BOAC

EEngr - I have never seen a 'suggested' HBB load...

EEngr - I have never seen a 'suggested' HBB load before and that is useful. It now begs the question of what happens when you say 'goodnight' and park up for 24 hrs? Does something kill the HBB after...
Forum: Tech Log
5th Sep 2013, 14:00
Replies: 33
Views: 7,431
Posted By BOAC

Wrong - there is no switch! That's why it is...

Wrong - there is no switch! That's why it is called the 'hot' bus.
Forum: Tech Log
5th Sep 2013, 09:53
Replies: 33
Views: 7,431
Posted By BOAC

My only real Boeing experience is the 737 and I...

My only real Boeing experience is the 737 and I am working from the Smart Cockpit ELEC pdf for the 757 BUT the HBB is, in my experience, powered only by the battery via diodes - and we have had a...
Forum: Tech Log
5th Sep 2013, 07:45
Replies: 33
Views: 7,431
Posted By BOAC

- have you got a reference for that? My...

- have you got a reference for that? My understanding is that the HBB is always powered through the battery alone EXCEPT when the Hyd generator is operating.
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