Date:         26 Jun 98 02:37:59 
From:         "Donald Mc Lean" <>
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In answering a question on use of reverse thrust , asymmetric use of
reversers Mandy Bartels said that the 'power' on the b747-400 is reduced to
'idle' and the reversers are operated in that position to minimise the
opposition to brakes or words to that effect.
Surely the 'thrust' is reduced to 'zero' with the reversers at the interlock
position, ie , so no forward or reverse thrust is produced. This is a far
cry from 'idle' thrust that on a cold winter morning can be over 1200lbs per
engine (approx 5000 total) that works against the brakes on landing rollout.
Its not just terminology.    cowboy