OPERATOR’S
MANUAL
CMA-9000 FLIGHT MANAGEMENT SYSTEM
Page
14-1
November 19, 2009
SECTION 14
PERFORMANCE FUNCTIONS
FUEL PERFORMANCE CALCULATION
From displayed fuel flow and remaining fuel quantity, the CMA-9000 FMS will compute the following parameters
and display them on the FUEL 1/2 page:
•
Predicted maximum range with remaining fuel.
•
Predicted endurance (in hours plus minutes).
•
Predicted quantity of fuel remaining at an operator specified downtrack waypoint.
The CMA-9000 FMS will accept total remaining quantity of fuel and fuel flow information from the fuel computer
system. If a fuel computer system is not configured or has failed, the CMA-9000 FMS allows the operator to
manually enter on the RTE x FUEL page the total fuel quantity and the fuel flow.
The CMA-9000 FMS also provides the means to perform "what if" calculations via the RTE x FUEL page by
allowing operator entry of fuel flow and total remaining fuel quantity. The temporary values entered by the
operator will be replaced by fuel computer data (if available) upon each new access of the Fuel page.
If the FUEL+WEIGHTS option is configured for the FUEL pages, the CMA-9000 FMS provides on the RTE x
FUEL 2/2 page several fields used by the operator to enter the empty weight, optional equipment weight, crew
weight, cargo weight and total fuel weight including reserve. These values are used by the CMA-9000 FMS to
calculate the initial Gross-Weight (GWT) estimate, displayed on FUEL 1/1 page. Once the initial GWT is
accepted by the CMA-9000 FMS, the Gross Weight will be continuously estimated by subtracting the fuel
consumption based on the average fuel flow. The GWT units will match the fuel flow units, that is, if the fuel flow
is in Kg/Hr or Lb/Hr, then the GWT will be in Kg or Lb respectively.
If the FUEL option is configured for the FUEL pages, the CMA-9000 FMS receives the gross weight value from
the Fuel computer in addition to the fuel weight and fuel flow values.
In multiple FMS installation, all fuel data is cross-talked between FMSs.
CAUTION:
The unit selection on the FUEL 1/2 and FUEL 2/2 pages has to be consistent with other fuel indicators
installed in the cockpit. Verify units on the FUEL pages and on other fuel indicators.
This page is printed under user's responsibility
and must not be retained for reference