DHC-4A “TURBO” CARIBOU
PERFORMANCE SUMMARY
The Turbo Caribou STC certification basis is in accordance with Canadian AWM525 and FAA FAR 25 transport category regulations.
The following summary of the performance data is derived from the approved flight manual, test flight data, and the ‘airplane operating’ data supplement. The data presented is under ISA conditions, takeoff, accelerate-stop, and landing distances are given at sea level, zero wind, and from a dry, level surface.
Take-off and Landing 28500 lbs.: Short Field Technique (STOL)
Ground roll.................................................. 800 ft.
Total distance to clear 50 ft....................... 1,300 ft.
Take-off at 18000 lbs.
Ground roll.................................................. 235 ft.
Total distance to clear 50 ft.......................... 780 ft.
Landing at 28500 lbs.
Ground roll.................................................. 354 ft.
Total distance from 50 ft.............................. 890 ft.
Take-off and Landing 28500 lb.: FAR 25, Transport Category (AFM data)
Take-off (Flaps 7°)(One engine inoperative. At V1) 3,955 ft.
Accelerate-stop (One engine inoperative. At V1).... 3,925 ft.
Landing (Flaps 30°) (Total distance from 35 ft.)... 2,120 ft.
Aircraft at 28500 lb. and All Engines Operating (Test Data)
Take-off (Flaps 7°, both engines at take-off power)
Ground roll........................................................ 1,530 ft.
Total distance to clear 35 ft................................ 1,950 ft.
Landing (Flaps 30°)
Ground roll........................................................... 700 ft.
Total distance from 35 ft.................................... 1,520 ft.
Rate of climb at maximum continuous power (WAT) Sea level
Two engine…………………………….........................…1,520 ft.
Single engine……………………………….....................…220 ft.
Service Ceiling
Two engines………………………….......................… 20,000 ft.
Single engine……………………….......................…….10,000 ft.
Cruise speed at 10,000 ft. (ISA)
1100 PPH Maximum 85% torque 1090 SHP 172 kt. TAS
910 PPH Standard 60% torque 880 SHP 158 kt. TAS
Max fuel 5,547 lb. (endurance 5.3 hrs with IFR reserve)
Aircraft empty weight 16,500 lb.
Aircraft gross weight 28,500 lb.
Aircraft zero fuel weight 27,000 lb.
AIRCRAFT BASIC DATA
Wing Span 95 ft. 7.5 in.
Wing area 912 sq. ft.
Wing Aspect Ratio 10
Length Overall 72 ft. 7 in.
Height Over Fin 31 ft. 9 in.
Track of Main Wheels 23 ft. 1.5 in.
CABIN DIMENSIONS
Length (fwd edge of ramp) 28 ft. 9 in.
Width (maximum) 87 in.
Width (at floor) 73.5 in.
Height (on centerline) 75 in.
Volume (rectangular) 1150 cu. ft.
DOOR DIMENSIONS
Rear Loading Door
Width 73.5 in.
Height 75 in.
Side Doors (2)
Width 35 in.
Height 55 in.
WEIGHTS
Design Take-off Weight 28,500 lbs.
Design Landing Weight 28,500 lbs.
Empty Weight 16500 ibs.
Maximum Zero Fuel Weight 27,000 lbs.
Maximum Payload 10,000 lbs.
Maximum Fuel
(Internal Tanks) 5540 lbs.
ENGINES
Two PWC PT6A-67T
Take-off Rating 1424 BHP
PROPELLERS
Two Harzell 5 Bladed HC-B5MA-3M Constant Speed/Reversing.