1.1.5. The FLIP program
Flight Planning is one of the major tasks of a dispatcher. Two essential aspects have to be examined when a new route is to be opened: Feasibility and economics. Both involve an accurate and representative estimation of the fuel burn that has to be expected on the given route.
Flight Operations & Line Assistance Getting to Grips with Aircraft Performance Monitoring
APPENDICES
Commercial flight planning providers like Jeppesen, SITA or Air Data provide accurate routing information taking into account actual weather conditions, but these systems work with pre-calculated aircraft performance data.
For some critical routes, this level of precision may not be high enough to allow for a financially sound operation. This is why Airbus provides the ability for the operator to validate the fuel burn predicted by such commercial flight plans with its own software, the FLIP.
1.2. SCAP Programs and Unix Versions
Airbus Flight Operations Support & Line Assistance Department regularly participates to the IATA SCAP (Standard Computerized Aircraft Performance) meetings with other manufacturers and airlines representative.
In accordance with the “Standard definition” agreed by all participants to these meetings, Airbus provides Airlines Flight Operations with “SCAP compliant” computation programs written in FORTRAN 77.
These calculation programs are called “SCAP programs”. Subsequently, each operator, has to write its own calling program, which defines each input parameter, calls the calculation sub-routine and recovers the output parameters.
The available “SCAP Programs” are:
-SCAP TAKEOFF (OCTOPUS-SCAP-TAKEOFF or ATAM for takeoff
performance optimization),
-SCAP LANDING (OCTOPUS-SCAP-LANDING or ALAM for landing
performance optimization),
-SCAP CLIMB-OUT (for takeoff or approach trajectories computation),
-SCAP IFP (for in-flight performance computation),
-SCAP APM (for aircraft performance monitoring).
The SCAP programs are not embodied in the PEP for Windows environment, but
are available upon request from operators receiving the PEP for Windows product.
Flight Operations & Line Assistance Getting to Grips with Aircraft Performance Monitoring
APPENDICES
2. APPENDIX 2 - FUEL-USED METHOD
2.1. General Principle
The basis of the Fuel Used method is to measure the fuel burnt by the aircraft in level flight and to compare it to the fuel burn prediction of the IFP for the given flight conditions and time span.
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