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TLO program: It allows takeoff and landing optimization including “Takeoff Charts” and it consists of TLC (or TCP program for A300), for A310 and A320 and the former optimization part of the OCTOPUS program for A319, A321, A330 and A340.
IFP program: It provides aircraft performance for “High Speed” flight phases such as climb, cruise, descent, … and also includes a consultation tool of aerodynamic and engine data. It is applicable to all Airbus aircraft types.
OFP program: It is devoted to determining the aircraft trajectory (all engine operating) and various configuration parameters for a user defined flight path at takeoff or in approach (i.e. Low Speed phases). It also computes trajectories (with cutbacks for example) for noise level determination, which then becomes an input for the NLC program. It is
applicable for all Airbus aircraft types (but with possible production delays for some of them).

APM program: It allows the user to compare and monitor the actual aircraft In-flight performance level versus the theoretical baseline all along the aircraft life for all Airbus aircraft types.
FLIP program: It is a Flight planning software, which can compute a complete mission (standard, reclearance or ETOPS) for a given ground distance and an average wind, including taxi, diversion to alternate, route reserves, … , for all Airbus aircraft types.
NLC program: It has replaced the Noise Definition Manual (NDM) for some aircraft types and can compute on ground and in flight noise level for all Airbus aircraft types. The In-flight part of NLC uses flight paths calculated with the OFP program at takeoff or in approach.
Flight Operations & Line Assistance Getting to Grips with Aircraft Performance Monitoring
APPENDICES

1.1.3. The IFP program

The In Flight Performance program is the first program for high speed performance calculation within the PEP package. This tool is an engineering oriented tool and as such it is to be used within the frame of specific studies and various calculations required by the day-to-day work of an operation engineer.
The main tasks in which the IFP program can assist the engineer are:
-Computation of instantaneous or integrated performance data for a flight phase -Simulation of FMS computation -Extraction of aerodynamic characteristics and engine performance data for an
aircraft model

1.1.4. The APM program

For years, the business environment has been becoming more and more challenging. Yields are dropping while competition is increasing. Business traffic is volatile, aircraft operations are becoming more and more expensive and the price of spare parts are escalating faster and faster. Airlines have to face with new objectives to adapt to this environment.
Fuel burn makes up for ten percent of the direct operating costs. Engine maintenance makes up for another quarter. The operator's main concern is therefore to have high quality information about the condition and the performance of the aircraft whenever needed.
　
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