AVSIG: Flight Plan Reserves - B738 FMS wwswsigarch.jpg (7236 bytes)

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sreyoB yrraL
AVSIG Member


Reged: 05/16/04
Posts: 9442
Re: Flight Plan Reserves - B738 FMS
      01/27/14 11:11 PM

Quote:

The Smith FMS (B738) asks for the RESERVES on the PERF INIT on page 1. Based on the flight plan above what would be the Reserves?



International Reserve (10 PCT) + Alternate (ALTN) + Hold fuel (INTL HOLD)

In this case, enter 6.4 into the FMS.

This is the minimum fuel at your arrival airport. When the FMS projects arriving will less than this amount it will give an "INSUFFICIENT FUEL" FMC message.

The additional ETOPS fuel (ETP ADD) is confusing in this situation because it is required fuel at takeoff but is no longer required fuel at landing because, by then, the ETOPS segment is over. The reason you need additional ETOPS fuel is that an ETOPS diversion requiring descent (such as a loss of pressurization) will require significantly more fuel than the crossing at normal altitude.

BTW, you need to offload a couple of passengers. The ramp fuel is planned at 43.012 which is only 2 pounds of extra fuel and puts you at your max takeoff weight. The fueler can't fuel the "12" pounds as the gauges only display "43.0" so you're either don't have the required fuel or are overweight for takeoff. :)

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Entire topic
Subject Posted by Posted on
* Flight Plan Reserves - B738 FMS Bill Bridges - 9S1 01/27/14 10:45 PM
. * * Re: Flight Plan Reserves - B738 FMS sreyoB yrraL   01/27/14 11:11 PM
. * * Re: Flight Plan Reserves - B738 FMS Bill Bridges - 9S1   01/27/14 11:21 PM
. * * Re: Flight Plan Reserves - B738 FMS Mac Tichenor (DAL)   01/28/14 10:20 AM
. * * Re: Flight Plan Reserves - B738 FMS sreyoB yrraL   01/28/14 11:35 AM
. * * Re: Flight Plan Reserves - B738 FMS Bill Bridges - 9S1   01/28/14 02:10 PM
. * * Re: Flight Plan Reserves - B738 FMS sreyoB yrraL   01/28/14 02:17 PM
. * * Re: Flight Plan Reserves - B738 FMS Jeff Hartmann CIC   01/28/14 10:55 AM
. * * Re: Flight Plan Reserves - B738 FMS Richard Duxbury (Dux)   01/29/14 10:38 AM
. * * Re: Flight Plan Reserves - B738 FMS Jeff Hartmann CIC   01/28/14 07:31 AM
. * * Re: Flight Plan Reserves - B738 FMS sreyoB yrraL   01/28/14 12:10 AM

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