OVER THE TOP,
A caveat in advance, Company Policy may vary, and Company Policy is the operating method approved by the relevant authority in your AOC, presumably CASA in your case.
From the performance perspective -
(1) The RTOWs have verified that your Actual Gross Weight is less than the Limit, so operation is legal at both your present weight, and at the limiting weight shown in the RTOWs......SO......
(2) In normal operations, use the speeds for your Actual Gross Weight. These should be obtainable from the AFM / QRH / FMC etc.
(3) [This may not be Company Policy - If not, it should be] If your Takeoff is in conditions where windshear protection is desired, use the highest Takeoff speeds permissible, i.e. the speeds provided in your RTOWs. An extra caution here, sometimes the RTOW exceeds Structural Limit as these are Performance Limits, if this is the case, use the speeds for Max. Structural Weight. (For the caution given here, operation should still be OK for speeds applicable to a weight at the performance limit greater than structural limit, but CASA might take you to task for using speeds for a weight outside the approved envelope of operating weights)
Best Regards,
Smokey
Last edited by Old Smokey; 19th Sep 2004 at 04:25.