Aircraft comparisons

[capnflyright]

Upcoming aircraft purchase has us doing some aircraft comparisons. The aircraft considered are: Twin otter, M-28 Skytruck, Shorts Skyvan, Casa 212 and the Let-410 UVP. We are operating out of 800-1000 foot airstrips and need something that will handle them in the summer (often 100-120 degrees). Most flight lengths are 3 hours roundtrip with a few being 5 hours, but we can refuel in between. Performance input from pilots who have flown these types is highly appreciated. Thank you.

 

[bocefus]

Not sure what type of ops you are intending, but you might find certification issues with the Let and the Skytruck

 

[kingaira90]

Dhc-6 400

Upcoming aircraft purchase has us doing some aircraft comparisons. The aircraft considered are: Twin otter, M-28 Skytruck, Shorts Skyvan, Casa 212 and the Let-410 UVP. We are operating out of 800-1000 foot airstrips and need something that will handle them in the summer (often 100-120 degrees). Most flight lengths are 3 hours roundtrip with a few being 5 hours, but we can refuel in between. Performance input from pilots who have flown these types is highly appreciated. Thank you.

You might want to look into the NEW Twin Otter 400 series being built by Viking in BC. They bought the rights to put it back into production. It has the -34 or -35 engines and a 1200 ft STOL takeoff over 50ft (shorter if you drop the weight of course). -kingaira90

http://www.vikingair.com/content2.aspx?id=276


GENERAL INFORMATION:

Maximum Takeoff Weight: 12,500 lb (5670kg)
Maximum Landing Weight: 12,300 lb (5579 kg)
Number Of Crew: 1 or 2
Number Of Passengers: 20
Fuel Capacities: Total – 378 US Gallons
Fuel Capacities: Optional Long Range – 89 US Gallons
AIRFRAME:

Configuration All metal, non pressurized, high-wing monoplane and a construction with fixed tricycle (steerable nose) landing gear
DIMENSIONS:

Wing Span 65 ft (19.8 m)
Length 51 ft 9 in (15.77m)
Cabin Height 9 ft 8 in (2.95m)
Tail Height 19 ft 6 in (5.94 m)
CABIN DIMENSIONS:

Cabin Length 18 ft 5 in (5.61m)
Cabin Height 4 ft 11 in (1.50m)
Cabin Volume (usable) 384 cu ft (10.87 cu. m.)
Cabin Doors (left side) 50 in X 50 in (1.27m X 1.27m)
Cabin Door (right side) 30 in X 45.5 in (.76m X 1.16m)
ENGINES:

Two, Pratt & Whitney Aircraft of Canada Limited, PT6A-34 or optional PT6A-35, single stage, free-turbine engines. PROPELLERS:

Two, Hartzell, HC-B3TN-3DY, three bladed reversible pitch, constant speed, fully feathering propellers. Optional 4-blade – type and configuration TBA STANDARD AIRCRAFT BASIC WEIGHT:

6881 lb (3121 kg)
PERFORMANCE SUMMARY:

STOL Takeoff and Landing Distance: 1200 ft (366m)
(Takeoff distance to 50 ft)
Maximum Cruise Speeds:
TAS Sea Level: 170 kt
5,000 ft: 181 kt
10,000 ft: 182 kt
Enroute Rate of Climb at Sea Level:
(both engines at maximum climb power): 1600 ft/min
Service Ceiling - both engines at maximum climb power
(Rate of climb 100 ft/min): 26,700 ft (8138 m)
Payload Range – at maximum cruise speed
Payload for 100 nautical mile (185km) range: 4280 lb (1941 kg)
Payload for 400 nautical mile (741 km) range: 3250 lb (1474 kg)
Maximum Range - zero payload
with Standard Tankage (2583 lb (1172 kg) fuel): 775 nm (1435 km)
with Long Range Tankage (3190 lb (1447 kg) fuel): 980 nm (1815 km)
Maximum Endurance
with Standard Tankage (2583 lb (1172 kg) fuel): 7 hr 10 min
with Long Range Tankage (3190 lb (1447 kg) fuel): 9 hr

 

[V-STALL]

Casa 212 depends on what engines you have. If it's the Garretts they don't work as effeciently in those types of temps. You would do better with Pratts in those temps.