Power Settings/Weights/Speeds/Flaps

POWER SETTINGS
Pre-Take off	3400 RPM Check
Rollout		3200 RPM with Manifold Pressure at 48" Max
Climb		3000 RPM up to 3200 RPM (MP at 40")
Normal cruise	3200 RPM with MP at 32" or less (17 GPH)
Alternate cruise 2800 RPM
economy cruise   2600 RPM @ 22" Fuel Consumption = 16 GPH

MAX WEIGHT      7000 Pounds
TAKE-OFF        20     10     0    Use +2 - +4 Trim
V1 = VR         78      85      -     Begin rotate at 75 mph
V2              84      92      114
VFRI            108     108     -
VCLIMB          -       -       124
 
LANDING 	40     30     20     0
VAPP (1,3 VS)   90      99     109    124     at MSL, 50% Wgt

 
MODEL 680
Price.................................................$89,500
Years Built...................................... 1955 - 1958
Serial No. Range....................................242 - 651
Total Built...............................................254
Power Plant............................Lycoming GSO-480-A1A-6
  Rating.....................................340hp @ 3400 RPM
  Fuel, octane - capacity (Gal).................100/130 - 223
  Fuel Consumption GPH Normal Cruise.....................17.0
Propeller........................................ 93" 3-blade
Weight (lb), empty - gross........................4420 - 7000

Dimensions :
  Wing span (Inches) - area (Sq ft)............528.75 - 242.5
  Fuselage length - height (Inches)...........421.25 - 174.00
  Volume, cabin - baggage area (Cubic feet)..........177 - 32
  Seats ................................................5 - 7

Performance:
  Takeoff over 50' obstacle.............................1,500
  Landing over 50' obstacle.............................1,605
  Service ceiling (feet)...............................24,200
  Single-engine ceiling................................15,000
  Maximum range (miles).................................1,400
  Cruising speed (70% @10,000 ft).........................210
  Takeoff - landing speed...........................99 - 92.5
  Best rate-of-climb......................................120