Specification

Standard Otter

Vazar Turbine Otter*

Standard Cessna Caravan*

TTC 
Super Otter

Engine 

P&W R1340

PT6A-135

PT6A-114

TPE331-10/-12JR

Horsepower

600 hp

750 shp

600 shp flat-rated

900 shp flat-rated

Torque

2101 ft-lbs

1876 ft-lbs

1659 ft-lbs

2971 ft-lbs

TBO

1000 hrs

3500 hrs.

3600 hrs

7000 hrs

Useful Load (wheels)

3400 lbs

3800 lbs

4110 lbs

3800 lbs

Useful Load (floats)

3000 lbs

3767 lbs

3487 lbs

3767 lbs

Std. empty weight (wheels)

4600 lbs

4200 lbs

3925 lbs

4200 lbs

Std. empty weight (floats)

5000 lbs

4600 lbs

4548 lbs

4600 lbs

Max gross weight (floats)

8000-8367 lbs

8000-8367 lbs

8000-8035 lbs

8000-8367 lbs

Max landing weight (floats)

8000 lbs

8000 lbs

7800 lbs

8000 lbs

Climb (ISA- g.w. wheels)

850 ft/min

1200 ft/min

1230 ft/min

1700 ft/min

Climb (ISA- g.w. floats)

450 ft/min

1100 ft/min

1110 ft/min

1600 ft/min

Cruise (10,000 ft. wheels)

105 kts 

144 kts

186 kts

155 kts (airframe limited)

Cruise (10,000 ft. floats)

100 kts 

130 kts

159 kts

145 kts (airframe limited)

Cruise fuel flow

244 lbs/hr

338 lbs/hr

361 lbs/hr

315 lbs/hr

Takeoff (wheels)

630 ft

560 ft

1160 ft

490 ft

Takeoff (floats)

18-20 sec

15-18 sec

28 sec

8-10 sec

Landing (wheels) 

440 ft

310 ft

745 ft

290 ft

Landing (floats) 

500 ft

400 ft

645 ft

300 ft

Powerloading

13.3 lbs/hp

10.66 lbs/shp

13.3 lbs/shp

8.89 lbs/shp

Stall Speed- clean

63 kts

63 kts

73 kts

70 kts

Stall Speed- flaps

50 kts

50 kts

59 kts

49 kts

Cargo area

480 cu ft

480 cu ft

341 cu ft

480 cu ft

Range (cruise- standard fuel)

5.36 hrs

4.32 hrs

6.15 hrs

4.64 hrs

* The performance and weight specifications for the Vazar turbine Otter and the Cessna Caravan are the best that we can determine from all the literature that we had at the time. We also called operators of the Vazar Otter to get accurate weight and performance numbers in the field .