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1977 Beech Sundowner N18861
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| Base/used price: | $30,500 | |
| Engine make/model: | Lycoming O-360-A4K | |
| Horsepower@rpm@altitude: | 180@2700@SL | |
| Horsepower on takeoff: | 180 | |
| TBO hours: | 2000 | |
| Fuel type: | 100/100LL | |
| Propeller type/diameter (in.): | Sensenich/76 | |
| Landing Gear type: | Tri/Fixed | |
| Max ramp weight (lbs.): | 2450 | |
| Gross weight, normal category (lbs.): | 2450 | |
| Gross weight, utility category (lbs.): | 2030 | |
| Landing weight (lbs.): | 2450 | |
| Empty weight, std. (lbs.): | 1500 | |
| Useful load, std. (lbs.): | 950 | |
| Payload, full std. fuel (lbs.): | 638 | |
| Usable fuel, std (gals.): | 52 | |
| Oil capacity (qts.): | 8 | |
| Wingspan: | 32 ft. 9 in. | |
| Overall length: | 25 ft. 9 in. | |
| Height: | 8 ft. 2 in. | |
| Wing area (sq. ft.): | 146 | |
| Wing loading (lbs./sq. ft.): | 16.7 | |
| Power loading (lbs./hp.): | 14.1 | |
| Wheel base: | 6 ft. 4 in. | |
| Wheel track: | 11 ft. 10 in. | |
| Wheel size (in.): | 6.00 x 6 | |
| Seating capacity: | 4 | |
| Cabin doors: | 2 | |
| Cabin width (in.): | 44 | |
| Cabin height (in.): | 49 | |
| Baggage capacity (lbs.): | 270 | |
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PERFORMANCE
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| Cruise speed @ 8,000 ft. (kts.): | ||
| 75% power: | 118 | |
| 65% power: | 111 | |
| 55% power: | 93 | |
| Max range (w/ reserve) (nm): | ||
| 75% power: | 459 | |
| 65% power: | 535* | |
| 55% power: | 600* | |
| Fuel consumption (@ .42 lbs./hp/hr sfc) (gph): | ||
| 75% power: | 9.5 | |
| 65% power: | 8.2 | |
| 55% power: | 6.9 | |
| Estimated endurance (65%)(hrs.): | 5.0 | |
| Stall speed (flaps up) (kts.): | 57 | |
| Stall speed (flaps down) (kts.): | 52 | |
| Best rate of climb (SL-fpm): | 792 | |
| Best rate of climb, 8,000 ft. (fpm): | 405 | |
| Service ceiling (ft.): | 12,600 | |
| Takeoff ground roll (ft.): | 1130 | |
| Takeoff over 50 ft. obstacle (ft.): | 1955 | |
| Landing ground roll (ft.): | 703 | |
| Landing over 50 ft. obstacle (ft.): | 1484 | |
| * estimated | ||
