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Old 20th November 2008 | 15:03
  #33 (permalink)  
Chris Scott
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Joined: Jan 2008
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From: Blighty (Nth. Downs)
Stand-up for spool-up

Confusing that we've got rolling-T/O and full-length T/O discussion threads running in parallel, with so much potential overlap.

Tee Emm describes "standing up" the throttles on the JT8D (1.6 EPR), and we used to do precisely that on the JT3D-engined 707s (1.2 EPR, I think).

If we were joining the runway from a 90-degree angle, the PF would stand up the throttles (err: sorry captain, the thrust levvers) when we were about half way round the corner. They were then greedily grabbed by the F/E, and after the airplane had accelerated round the corner he would eventually announce something like "engines all stable". The PF would then call for "take-off" power (not the only ambiguous call in those days).

I always feared we were vulnerable to an outboard failing to spool-up as we shot round the corner...

Quote from Tee Emm:
I can never understand what they are attempting to achieve because certainly their technique is not the Boeing way. Maybe they are just impatient...
[Unquote]

Possibly. As humble SLF, what grates me most about the current technique on some CFM/B737s is when, having lined up and still rolling forward at idle thrust, the pilot applies the brakes and simultaneously starts increasing the power for the procedure you describe.

Last edited by Chris Scott; 20th November 2008 at 15:46. Reason: Minor, plus 2 paragraphs added.
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