PPRuNe Forums - View Single Post - Critical Engine on the 747?
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Old 23rd January 2005 | 20:01
  #21 (permalink)  
fire wall
25 Anniversary
 
Joined: Jun 2000
Posts: 476
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Mr pictures,
"crossfed the power to the proper HYD Systems"
to clarify:
I was informed by a KL stationed gnd engineer that the a/c was taxiing after maintenance with only engines 2 and 3 operating......engineers at the controls. Unfortunately normal brakes operate from hyd sys 4 and alternate from sys 1. Bringing the ADP on line on either system would have averted the embarrasment or flicking up the reserve brake switch which runs off hyd sys 2 (with operating EDP and maybe ADP if the brought such on line).........switch with big flashing RED brake source light located near Capt R knee.

I operated into KL the next day and the gnd engineer took me to the a/c. No security about so got withing 20 metres ...... the visual aspect to the external damage was incredible and I understand the internal damage to structure just as so. First class area (seats 1-10 or there abouts) floor pushed up towards roof of lower cabin.

Anyway, back to topic. There still seems to be some confusion re the topic of critical eng. I have quite a bit of time on type and can assure those that it is the upwind engine. I beleive the Q comes from a tech exam run for first joiners to a "swoosh" airline based in Asia (now that one cannot be too difficult to work out). Raised eyebrows will be accompanied by the answer of downwind donk!

Last edited by fire wall; 24th January 2005 at 06:43.
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