Technical data |
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| Engines | 4 Wright Cyclones R-3350, developing 3’250 HP each. | |
| Propellers | Hamilton Standard : | Constant Speed, Hydraulic |
| Hub Material : | steel | |
| Blade material : | Aluminium Alloy | |
| Number of blades : | 3 (6901A-O) | |
| Diameter: | 15’ 2” (4,63 meters) | |
| Max.RPM: | 2900 | |
| Airspeed limits (IAS-indicated) | VNO (normal operation) | 260 Kts / 482 Km/h |
| VNE (never exceed) | 293 Kts / 543 Km/h | |
| Va (maneuvering) | 180 Kts / 333 Km/h | |
| Vf (takeoff position 60%) | 184 Kts / 341 Km/h | |
| Vf (approach position 66%) | 161 Kts / 298 Km/h | |
| Vf (80%) | 153 Kts / 283 Km/h | |
| Vf (landing position 100%) | 148 Kts / 274 Km/h | |
| VLO (landing gear operation) | 165 Kts / 306 Km/h | |
| VLE (landing gear extension) | 165 Kts / 306 Km/h | |
| Weight limits | Maximum for take off | 120'000 lbs / 54,55 t |
| Maximum for landing | 101'500 lbs / 46,1 t | |
| Maximum zero-fuel-weight | 96’760 lbs / 44 t | |
| Minimum crew | Pilot, co-pilot and flight engineer | |
| Fuel Capacity | Tanks 2 & 3 (inboard) | 790 USG or 2990 l each |
| Tanks 1 & 4 (middle) | 1555 USG or 5880 l each | |
| Tanks 2a & 3a (outboard) | 565 USG or 2136 l each | |
| Tank 5 (center section) | 730 USG or 2560 l each | |
| Total | 6550 USG or 24760 l | |
| Oil capacity | 4 engine tanks | 40 USG or 151 l each |
| 1 auxiliary cell (center section) | 67 USG or 253 l each | |
| Dimensions | Wingspan | 123 ft or 37 m |
| Length | 113 ft or 34 m | |
| Heigh | 24 ft or 7 m | |
| Miscellaneous | Empty weight | 70'000 lbs or 31,8 t |
| Range | 3'500 NM or 6500 Km | |
| Fuel consumption | 480 USG or 1800 l hour | |
| Endurance (no reserve) | 14 hours | |
| Oil consumption | 3,5 USG or 13 l/hr per engine | |
| Normal approach speed | ||
| initially (flaps at 60 %) | 140 kts or 260 Km/h | |
| reducing to (flaps 100 %) | 115 kts or 213 Km/h | |
| Maximum ceiling: | approx. 12’000 ft or 3650 m (with 100LL fuel), was 23’200 ft or 7050 m (with 115/145 octane fuel) | |
| True Air speed (TAS): | 235 kts or 435 Km/h at 10’000ft | |
| Minimum runway length required for T/O and Landing: | 4’500 ft or 1’400m | |
| Max demonstrated crosswind: | 30 knots or 56 Km/h | |
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