Re: French 747 mishaps

Organization: Internet Africa
Date:         31 Jul 96 12:29:41 
References:   1 2
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The B747 Operations Manual has no procedures for assymetric reverse thrust on
landing, however, I do believe that most carriers have a simple policy that the
FE ensures (aids?) the pilot flying has symmetrical reverse on landing.
This is certainly the case with South African Airways.
Considering that the performance manuals do not take use of reverse thrust into
account (only antiskid and auto speedbrake, moderate braking), logic dictates
that if  asymmetric reverse is encountered, the reverse thrust should be
removed and deceleration caused by the wheel brakes only. Obviously there is
nothing to stop the PF and FE from ascertaining which engine is faulty, and
then useing reverse thrust on two symmetrical engines.
Anthony McHale