4.4. THE CRUISE PERFORMANCE REPORT 66
4.4.1. GENERAL 66
4.4.2. TWO REPORT FORMATS 67
4.4.3. THE TRIGGER LOGIC 72
4.5. DATA ANALYSIS PROCEDURE 74
D. Cruise performance analysis
75
1. THE BOOK LEVEL
75
2. A TOOL FOR ROUTINE ANALYSIS : THE APM PROGRAM 75
2.1. INTRODUCTION 75
2.2. BASICS 76
2.3. THE INPUT DATA 77
2.4. APM OUTPUT DATA 80
2.5. THE APM STATISTICAL ANALYSIS 82
2.5.1. GENERAL 82
1.1.2. MEAN VALUE (μ) 82
1.1.3. STANDARD DEVIATION (Σ) 82
1.1.4. DEGREES OF FREEDOM 83
1.1.5. VARIANCE 83
1.1.6. NORMAL OR GAUSSIAN DISTRIBUTION 83
1.1.7. CONFIDENCE INTERVAL 84
1.6. THE APM ARCHIVING SYSTEM 85
1.7. SOME NICE-TO-KNOWS 85
1.7.1. INFLUENCING FACTORS 85
1.7.2. AIRCRAFT BLEED CONFIGURATION 86
1.7.3. AIRCRAFT MODEL SPECIFICS 86
1.7.4. PROCESSING RULE 87
3. HOW TO GET THE IFP & APM PROGRAMS 88
E. Results appraisal 89
1. INTRODUCTION 89
2. INTERPRETING THE APM OUTPUT DATA 89
2.1. DFFA INTERPRETATION 90
2.2. DFFB INTERPRETATION 90
2.3. DSR INTERPRETATION 91
3. EXAMPLE 92
4. REMARKS 94
4.1. CORRELATING MEASURED DEVIATIONS TO THE AIRCRAFT 94
4.2. PRACTICES 94
F. Using the monitored fuel Factor
96
1. INTRODUCTION
97
2. FMS PERF FACTOR 98
2.1. PURPOSE 98
Flight Operations & Line Assistance Getting to Grips with Aircraft Performance Monitoring
TABLE OF CONTENTS
2.2. FMS PERF DATA BASE (PDB) 98
2.3. UPDATE OF THE PDB 99
2.4. PERF FACTOR DEFINITION 99
2.4.1. GENERAL 99
2.4.2. BASIC FMS PERF FACTOR 100
2.4.3. MONITORED FUEL FACTOR 101
2.4.4. FMS PERF FACTOR 102
2.5. BASIC FMS PERF FACTOR 102
2.5.1. GENERAL ASSUMPTIONS 103
2.5.2. A300-600/A310 AIRCRAFT 103
2.5.3. A320 “CFM” ENGINES 103
2.5.4. A320 “IAE” FAMILY : 105
2.5.5. A330 AIRCRAFT 106
2.5.6. A340 AIRCRAFT 107
2.6. PROCEDURE TO CHANGE THE PERF FACTOR 108
2.6.1. A300-600/A310 AIRCRAFT 109
2.6.2. A320 FAMILY AIRCRAFT 109
2.6.3. A330/A340 AIRCRAFT 110
2.7. EFFECTS OF THE PERF FACTOR 110
2.7.1. ESTIMATED FUEL ON BOARD (EFOB) AND ESTIMATED LANDING WEIGHT 110
2.7.2. ECON SPEED/MACH NUMBER 111
2.7.3. CHARACTERISTIC SPEEDS 111
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