SPECIFICATIONS:  

 

Cheyenne 400 LS Performance Specs

General Information

Airframe

Length

43' 5"

13.23 m

Height

17' 0"

5.18 m

Wing span

47' 8"

14.53 m

Usable Fuel- Jet A Type

580 Gal

2,195 L

 

Tanks Capacity- (Gallons)
Left Main 250
Right Main 250
Left Aux. 40
Right Aux. 40

Gross weight

12,050 Lbs

5,470 Kg

Empty weight

5,986 Lbs

2,717 Kg

     

Retractable landing gear

First certified

07/13/84

 

Cabin - Pressurized

Length

17' 8"

5.38 m

Height

4' 8"

1.42 m

Width

4' 4"

1.32 m

Passengers (max, including crew)

9

 

 

Propulsion

Constant speed propellers - Full feathering and Reversible

Number of engines

2

Type of engines

Turbine

Manufacturer 

Garrett

   Left(cw rotation) TPE33l-l4A
   Right(ccw rotation) TPE33l-l4B

Rated Horsepower

1,000 

Propeller Speed 1540 RPM
Engine Type Single fixed-shaft turboprop
Compressor
   Stages 2  
   Type Centrifugal
Turbine
   Stages 3
   Type Axial flow
Combustion Chamber Annular
TBO in the US 3,000 hrs.  

Propeller Manufacturer

Dowty Rotol

Blade Model
    Left R339/4-123-F/8
    Right R341/4-123-F/9 4
Number of blades 4
Propeller Type Hydraulically operated
Propeller Diameter 106"
 

Performance

Cruise speed

334 Kts

384 Mph

618 Km/h

 

Top Speed: In excess of 400 MPH at some altitudes, a more typical high altitude cruise being327 KIAS at 39,000 feet for a total of 595 pounds fuel / hour

  

Service ceiling

41,000 Ft

12,496 m

Engine out service ceiling

28,700 Ft

8,747 m

Rate of climb

3,242 Ft/min

16.4 m/s

Engine out rate of climb

997 Ft/min

5.0 m/s

Takeoff over 50 Ft (15m)

1,930 Ft

588 m

Landing over 50 Ft (15m)

2,280 Ft

694 m

Range

1,879 nm

2,162 sm

3,479 Km

 

Airspeed Limitations

The following chart provides you with the airspeed limitations for the Cheyenne 400 LS.  For information on the terminology, please refer to the General Airspeed Terminology section of the POH.

Speed

KCAS

KIAS

Remarks

Vmo

246

244

Do not exceed up to 27000

Va 12000 lb

189

187

 

Va 7600 lbs

157

155

 

Vfe 10 flap

196

194

 

Vfe 30 flap

169

167

 

Vle

172

170

Do not exceed with gear extended

Vlo extension

172

170

 

Vlo retraction

172

170

 

Vmca

101

99

Lowest airspeed the aircraft is controllable with 1 engine

Vso

86

84

Stall speed gear down

Vsi flaps up

95

93

Stall speed with gear up

Vsi flaps 10

92

90

  

Airspeeds for Safe Operation

Condition

Speed KIAS

Design Maneuvering Speed

        12,050 lbs.

 187

        7,600 lbs.

155

Maximum Flap Extended Speed

117

     100% flaps (Approach) 194
     30 flaps (Landing)  167
Maximum Gear Extended Speed 170
Maximum Gear Operating Speed  
     Retraction 170
     Extension 170
Best Rate of Climb Speed  
     Below 25,000 ft, no Flaps 138
     Above 25,000 ft, decrease by I knot per 1000 ft  
Final Approach Speed (11,100 Ib) 105
Intentional One Engine Inoperative Speed 125
Recommended Holding Speed  
     Sea level to 15,000 ft 150
     Above 25,000 decrease by 1 knot per 1,000 ft  
Balked Landing Climb (11,100 lb) 110
Rough Air Penetration Speed (below 25,000 ft) 195

Best Glide Speed

Weight (Lbs.)

Speed KIAS

12,050

136

11,000

 130

10,000

124

9,000

117

8,000

111

   

Airspeed Indicator Markings  

 

Markings found on the Airspeed Indicator

 

Marking

KIAS Value/Range 

Significance

Green Arc

93 to 244

Normal Operating Range

White Arc

84 to 167

Flaps Extended 30 o

Radial Red Line

99

Air Minimum Control Speed

Radial Blue Line

125

Best Rate of Climb, One Engine

 

Weight Limits

 

It is the responsibility of the airplane owner and pilot to assure that the aircraft is properly loaded. Maximum and minimum allowable weights are listed below. 

 

Type

Weight (Lbs.)

Maximum Ramp Weight

12,135

Maximum Takeoff Weight

 12,050

Maximum Landing Weight

11,100

Maximum Zero Fuel Weight

10,000

Maximum Weights in Baggage Compartments  

                  Forward

300

                  Aft

400

 

General Limitations

 

Use of Continuous Ignition Ignition must be turned ON prior to landing and remain ON until the landing is completed or until climb has been established following a balked landing.
Crossfeed Limitation Crossfeed is not approved for takeoff or landing.
Maximum Fuel Imbalance The maximum allowable fuel imbalance between wing fuel systems is 500 pounds.
Starter Limitations Use of the starters is limited to 30 seconds ON, I minute OFF, 30 seconds ON, I minute OFF, 30 seconds ON, 30 minutes OFF before a fourth start may be attempted. Series starts are not approved when ambient temperatures exceed 10C.
Maneuver Limits No acrobatic maneuvers, including spins are approved.
Flight Maneuvering Load Factor Limits
 

Positive Load Factor (flaps Up) 3.19 g
Negative Load Factor (Flaps Up) -1.28 g
Positive Load Factor (Flaps Down) 2.00 g
NOTE: No inverted maneuvers approved.

Crew Limits Minimum Crew One Pilot

 

 

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