747-400 Initial Cruise

Date:         28 Sep 97 20:59:07 
From:         Andrew Cruickshank <andrew@openkast.demon.co.uk>
Organization: OpenKast
Followups:    1 2 3
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A few years ago a flew BA from KUL to LHR and the pilot's
commentary over the PA stated cruise would be at 26,000 ft.
I though this a bit low and stowed it away for future

Last week I did LHR to KUL with MAS and the pilot said
we would be at 29,000 ft initially until we were lighter.

This raises the question - is the cruise level of a 747-400
with full load of passengers and cargo limited until fuel
burn off occurs.

Given that no specific climb was obvious (increase in
engine noise or change in cabin pressure) then this also
raises the question as to whether some of cruise-climb
phase is used as fuel burns off.

Andrew Cruickshank.