-10 V4 Chapter 5 Flashcards
Rotor Speed (Nr) Limits - %
Maximum (>110 red) - 110%
Transient (yellow) - 105 - 110%
High Rotor Warning Annunciated - 105%
Normal (green) - 97 - 104%
Low rotor warning annunciated - 97%
Transient (red) - 0 - 96%
ENG 1 or 2 OIL PRESSURE (PSI)
120 - Max (>120 red w/box
23 - 120 - Normal (Green)
23 - Min (<23 red)
HYDRAULIC PRESSURE (PSI)
> 3410 - Transient - permitted for 5 sec (yellow) (>= 5 sec red w/box)
3310 - 3400 - Transient - Permitted for 5 min (yellow) (>= 5 min red w/box)
2700 - 3300 - Normal (green)
1260 - Min (<1260 red w/box)
Engine Starter Limitations -
Engine Starts at Ambient Temp of 61F (16C) and below:
Two consecutive start cycles may be made, followed by a 3 MIN rest period, followed by two additional consecutive start cycles.
A 30 minute rest period is then required before any additional starts.
Engine Starter Limitations -
Engine Starts at Ambient Temp above 61F (16C):
Two consecutive start cycles may be made. A 30 minute rest period is then required before any additional starts.
Engine Starter Limitations -
Dual Engine Starts
Dual engine starts are prohibited due to insufficient IPAS air.
Engine Temperature Limitations - (TGT *C)
949 - Max (>949 red)
904 - 949 - Transient, 12 sec (yellow)
880 - 903 - Contingency, 2.5 min (yellow)
847 - 879 - Max rated power, 10 min (yellow)
851 - Max during start
794 - 846 - Intermediate rated power, 30 min (yellow)
793 - Max continuous power
0 - 793 - Normal (green)
Engine Temperature Limitations:
At what temperature does the TGT limiter control limit engine operation? Both Dual Engine (DE) and Single engine (SE)
DE - 879C +/- 5C
SE - 903C +/- 5C
Engine Power Turbine Speed (Np) (Np %)
Np = N2
Max Digital Tape Reading - 120%
119 - Maximum (>119 red w/box)
114 - Engine Overspeed annunciated
104 - 119 - Transient, 12 sec, (yellow w/box at 114)
0 - 103 - Normal
Engine Gas Generator (Ng) Limitations (Ng %)
Ng = N1
- 0 - Maximum (>106.0 red)
- 1 - 106.0 - Transient, 12 sec, (yellow)
- 1 - 105.0 - Normal (green)
- 0 - Minimum engine out warning annunciated (<63.0 red w/box)
Engine Torque Limitations:
Limits - Torque (%) Digital Readouts with Nr <50%
30 - Max (>30 red)
0 - 30 - Normal (Green)
Engine Torque Limitations:
Limits - Torque (%) Digital Readouts with Nr <90%
70 - Max (>70 red)
0 - 70 - Normal (green)
Engine Torque Limitations:
Limits - Torque (%) Digital Readouts - Dual Engine
115 - Max (>115 red)
101 - 115 - Transient, 6 secs (yellow)
0 - 100 - Normal (green)
Engine Torque Limitations:
Limits - Torque (%) Digital Readouts - Single Engine
125 - Max (>125 red)
121 - 125 - Transient, 6 sec (yellow)
111 - 120 - Single engine contingency, 2.5 min, (yellow)
110 - Single Engine maximum continuous power (green)
0 - 110 - Normal (green)
Auxiliary Power Unit (APU) Operating Limits:
APU Clutch Limitation
Avoid prolonged operation at 94% - 96% Nr with the APU running. The APU clutch will oscillate from engaged to disengaged. This creates high loads on the clutch and shall be avoided.