Cruise EPR
To set EPR setting for cruise .74 mach
multiply your FL by 2 and 20 to the first 2 digits and use the result as a decimal fraction above 1.0 EPR
Cruise at FL290, 29 X 2 = 58 + 20 = 78 and use it above 1.0 EPR = 1.78 EPR for cruise .74 mach at FL290
EPR's & Pitch Attitudes (approx 46T)
Power Settings (2 eng)
EPR body angle
Flap up 1.3 4°
F5 1.35 8°
F10 1.4 7°
F15 1.2 4.5°
F30 1.3 2.5°
F40 1.4 0°
Power Settings (1 eng)
EPR body angle
Flap up 1.5 7°
F5 1.6 7°
F10 1.7 8°
F15 1.4 5°
Every 2000 kg’s of fuel burn re-adjust EPR’s
Approx N1 for climb out
Use 89% N1 for a approx 2 eng climb out value