PERFORMANCE

Climb Gradient (Minimum)

VFR 1.6

IFR   3.3

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Ground Speed X Gradient = FPM

FPM ÷ Ground Speed = Gradient

Feet Per NM  ÷ 60 = Gradient

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• Use longer of Dry / Wet Runway Length

• Use Actual Conditions for V1 Vr V2

• May Use Headwind Credit for Takeoff

• No Headwind Credit for Landing

• No Thrust Reverser Credit for Landing

• AFM Pages 4-366 thru 4-389 Landing Distance Advisory Information

• Fuel Loading Table – Ops Manual 7-9

Advisory  Section

• For second segment and enroute turning climb, up to and including a 15°  bank angle, if the takeoff weight is 19,323 lbs (19,516 lbs XLS) or less, multiply weight by 1.035 to obtain an  adjusted weight.  Enter the appropriate second segment or enroute climb table at the adjusted weight to find the actual climb performance of the aircraft  in the bank. If takeoff weight is greater than 19,323 lbs (19,516 lbs XLS), reduce the climb gradient by 1.2%.

Weight Limited by Approach Climb Requirements

The takeoff weight must be limited so

that, considering fuel consumption, the

aircraft  can climb at a minimum

gradient  of 2.1% (gross) in the event 

of a missed approach  at:

  • Destination Airport

  • Alternate airport (if designated,

    including a takeoff alternate or

    planned diversionary airport)

NOTE: The 2.1% gradient is for

two-engine airplanes.

The approach climb gradient is determined with one engine inoperative and the

aircraft in the approach configuration.

   

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Weight Limited by Landing Climb Requirements

The takeoff weight must be limited so

that, considering fuel consumed, the

aircraft can climb at a minimum

gradient  of 3.2% (gross)  in the event

of a go-around at:

   •  Destination Airport

   •  Alternate Airport

The landing climb gradient is  determined with all engines operating        and the aircraft in the landing configuration.

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On FAR 135 flights, the 15% additional

runway required for landing on a

"wet or  slippery" runway, and the

15% addition  when visibility / RVR

is les than 3/4 SM or 4000 RVR,                     are not cumulative.

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Definitions 4-8 AFM

Level Off Altitude

The barometric altitude at which a

second  segment climb ends.

1500' AGL  Net Climb Gradient @ V2

adjusted to Gross Climb Gradient

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Flightcrews shall use the standard

temperature lapse rate of minus 2°

per thousand feet.

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When present, headwind component

may be  used in performance

computations.  When present,  a tailwind component shall always be considered  in any performance computatipon.

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Interpolation of Performance Data: Unless prohibited by the appropriate AFM or the aircraft’s Standard Operating Procedures, it is permissible to interpolate between values of temperature, elevation, or aircraft gross weight on tabular data charts.  However, interpolation shall be limited to two parameters; i.e. if interpolating between temperature and elevation, then actual gross weight may not be interpolated.