Section 2 Pilot’s Operating Handbook
Limitations EXTRA 500
7 Use of Oil Grades Temperature Dependent
- At oil temperature –54 °C (-65 °F) or above:
MIL-PRF-7808L or later
- At oil temperature –40 °C (-40 °F) or above:
MIL-PRF-23699F or later
Minimum starting:
- MIL-PRF-7808L or later -54 °C (-65 °F)
- MIL-PRF-23699F or later -40 °C (-40 °F)
Caution Only discretionary mixing of oil series is permitted without
time penalty. If brands of oils are changed, it is
recommended this change be accomplished gradually using
a "TOP-OFF" method or by draining and refilling.
Note Oil series and brand used shall be recorded in engine
module logbook.
8 Oil Pressure Limits
- Maximum normal continuous Operation: 130 psig (896 kPa)
- Minimum normal continuous Operation:
at 94 % N1 and above 120 psig (872 kPa)
at 85 % N1 up to 94 % N1 90 psig (621 kPa)
below 85 % N1 50 psig (345 kPa)
- Minimum in beta range Operation:
at 94 % N1 and above 105 psig (769 kPa)
at 85 % N1 up to 94 % N1 75 psig (518 kPa)
below 85 %.- N1 35 psig (242 kPa)
- Minimum during start
when 59 % N
1
is reached: Positive indication
- Not permitted: above 130 psig (896 kPa)
Note During cold weather operation, 150 psig (1034 kPa) oil
pressure is allowable at minimum power, following an
engine start. Stay in ground idle power setting as long as oil
pressure exceeds max continuous pressure limit (130 psig)
during engine warm up.
2-8 26. January 2011
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