AIRCRAFT OPERATING MANUAL
DHC - 7
1 LIMITATIONS
Revision
Date
: 0
: July 1999
PT. PELITA AIR SERVICE
AOM
P a g e
: 1
: 8 of 10
1.5.8 ENGINE INSTRUMENT LIMITATION MARKINGS.
Color coded markings representing operating limits and ranges are attached to the
engine instrument dials to facilitate observance.
Torque Pressure Indicators
Transient (thin red radial)
7500 ft lb (5900 ft lb shown on
Pre-Mod 7/2271 indicators)
Maximum (wide red radial)
and amber light
4860 ft lb
Normal operating (green arc) 0 to 4860 ft lb
Turbine Temperature Indicators
Maximum — starting (thin red radial)
1000°C (5 sec limit)
Maximum — normal operation (wide
red radial) and light
800°C
Normal operating (green arc)
490°C 800°C
Propeller RPM Indicators
Maximum transient (thin red radial)
1445 rpm
Maximum (wide red radial)
1210 rpm
Normal operating (green arc)
850 rpm - 1210 rpm
Caution (yellow arc)
750 rpm - 850 rpm
Maximum reverse
1210 rpm
Gas Generator RPM Indicators
Pre-Mod 7/2091
Maximum (wide red radial)
102.7% rpm
Normal operating (green arc)
12 to 20% rpm
(green arc)
64 to 66% rpm
(green arc)
69.0 to 101.6%
Mod 7/2091
Maximum (wide red radial)
102.7%
Normal operating (green arc)
12 to 20% rpm
(green arc)
68 to 101.6% rpm
Oil Temperature Indicators
Maximum transient (thin white radial
104°C
with red dot)
Summary of Contents for Dash 7
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