Number to Memorize Flashcards
Height
high skid gear
10.91 feet
Length
41.4 feet
Baggage Max Weight
250 lbs
Baggage Max Volume
16 cubic feet
Number of Skid Shoes
7/Skid
14 Total
Engine Type
RR 250 C47B
Engine Horsepower
Thermodynamic Rating
813 SHP
Engine Takeoff Horsepower Rating
and Q
674 SHP @ 93.5-100% Q
Engine Continuous Horesepower Rating
and Q
630 SHP
RR Rating on Engine Plate
650 SHP
Compressor RPM
51,000 RPM @ 100% Q
Compression Ratio
9.2:1
Compressor Temperature Increase
291C/555F
Combustion Air Use
75-80% for cooling of internal parts
20-25% for fuel burn
~2% for sealing oil passages
Ng Speed
51,000 RPM @ 100% Ng
Np Speed
32,183 RPM @ 100% Np
Torquemeter Gear Speed
10,528 RPM @ 100% Np
Output Drive Gear Speed
6,317 RPM @ 100% Np
Transmission Speed Ratio
15.29:1 Reducing
Main Rotor RPM
413 RPM @ 100% Np
Tail Rotor Gearbox Ratio
2.53:1 Reducing
Tail Rotor RPM
~2,497 RPM @ 100% Np
Engine Anti-Ice/Pitot Heat - ON
OAT
Less than 5C/40F ambient air temperature and in visible moisture
CEFA Fuel Filter LRB pop
2.5 +/- 0.5 PSID
CEFA Fuel Filter bypas
3.4 PSID
CEFA Engine Oil Bypass
8.8-10.8 PSID
LRB shows indication of bypass
Engine Oil Tank Capacity
6 quarts
Minimum Engine Oil Pressure
Cruise
115 PSI
Maximum Engine Oil Pressure
Cruise
130 PSI
Maximum Engine Oil Pressure
Cold Start
200 PSI
Maximum Engine Oil Temp
Cruise
107C
Fuel System Capacity
Total/usable gallons
Total Pounds
130 total/ 127.8 usable gallons
869 lbs total
Fuel Forward Cell Capacity
gallons/pounds
37.6 gal
256 lbs
Main Fuel Cell Capacity
gallons/pounds
90.2 gal
626 lbs
Full Fuel Capacity
pounds
869 lbs
Fuel in pounds at which transfer from forward to main fuel cell begins and CG is moving forward.
770 lbs
Fuel in pounds at which both cells are drained equally and CG is at its max forward point.
508.6 lbs
Fuel in pounds at which only the forward cell is being drained and CG is moving aft.
344.1 lbs
Fuel in pounds at which the forward cell empties and CG is at is max aft point.
193.1 lbs
LOW FUEL CAS
100 +/- 10 lbs
FADEC Hot Start Abort
- MGT > 885C <10,000 feet
- MGT > 912C >10,000 feet
- Volt drops <10vDC
Max Start MGT
10 seconds > 843C
1 second > 927C
Transmission Oil Capacity
5 quarts
Transmission Oil Pump Volume
6-6.7 gal/min
Temperatures at which transmission oil is NOT sent to the cooler
Less than 66C
Temperatures at which transmission oil is gradually sent to the cooler
66-81C
Temperatures at which ALL transmission oil is sent to the cooler
Greater than 81C
At what pressure differential does the transmission oil filter LRB pop?
14 +/- 2 PSID
At what pressure differential does the transmission oil filter bypass?
17 PSID
Maximum Transmission Oil Temp
110C
Minimum Transmission Oil Temp
30C @ Idle
40c @ Continuous speeds
Number of MR Blades
4
Diameter of MR
35 feet
MR Blade Chord
10.75 inches
MR Blade Twist
-13 degrees
Weight of a single MR Blade
~58 lbs
MR Rigging
1 degree left - translating tendency
5 degrees forward - level ship in forward flight
Max MR Tie Down Load
60 lbs
Max MR Tie Down Deflection
50 inches
Minimum wind velocity required for MR tiedown
30 knots
Number of TR Blades
2
Diameter of TR
65 inches or 5.42 feet
TR Blade Chord
6.4 inches
TR Blade Twist
0 inches
TR Gearbox Oil Capacity
.33 quarts
TR Gearbox Attachment
4 studs and 2 alignment pins
Tailboom Attachment
4 bolts
Number of Hanger Bearings
6
Number of Thomas Couplings
8
Number of Plates in each Thomas Coupling
9-12
Max force on Stinger
400 lbs
Auxiliary Fin Offset
5 degrees outward
Vertical Stabilizer Offset
9 degrees outward
Number of Hydraulic Servo Actuators
4
Hydraulic System Pressure
1000 +/- 25 PSI
Hydraulic Reservoir Capacity
1.3 US Pints
Total Hydraulic System Capacity
1.68 US Quarts
At what differential pressure do the hydraulic pump LRBs pop?
70 +/- 10 PSID
At what temperatures will the hydraulic pumps LRBs NOT work?
Less than 2C
At what pressures will the hydraulic relief valve open?
1075-1375 PSI
MR Brake limit
Below 40% Nr
Vertical Speed Limit
2000 fpm
Max number of CAS displayed in the Crew Alert Window?
12
Max weight
5250 lbs
Minimum weight at fuselage station 65.0 (pilot/copilot)
170 lbs
Vne in 5 min range of 93.5-100% torque?
100 knots
Vne with doors removed
100 knots
Max allowable airspeed for sideward/rearward flight or crosswind hover
35 KTAS
Max operating altitude
20,000 feet Hd or Hp, whichever is lower
Slope landing limitations
10 degrees side slopes
10 degrees nose up slopes
5 degrees nose down slopes
Max sea level ambient temp for operation
51.7C/125F
Decreasing 2C/1000ft Hp
Minimum ambient temp for operation at all altitudes
-40C/-40F
% Np for Engine Overspeed
- 1% for 2.5 seconds
107. 3% Immediately
MGT start limits
843C for 10 seconds
927C for 1 second
Max continuous MGT
Max takeoff MGT
727C
779C
Engine torque ranges
Continuous 0-93.5%
Takeoff, 5min 93.5-100%
Fuel pressure ranges
Min 8PSI
Continuous 8-25PSI
Max 25 PSI
Nr power off limits
85-107%
Best rate of climb airspeed
60 knots
What supplement number do we use in the POH?
FMS 28
