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Thread: Qantas and the 747SP
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Old 10th March 2011 | 03:33
  #28 (permalink)  
Flightwatch
 
Joined: Jan 2000
Posts: 223
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From: UK
From Memory:-

The RB211-524 on the 747 started as the B4 and was developed into the C2 then the D4.

The thrust increased from 50k to 51.5k then 53k lbs.

Standing by to be corrected
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