Performance and Dispatch (Dispatch & Flight Planning) Flashcards
Recall what information is listed in the FMS Data Block of the Flight Plan
• Planned flight level
• Top of climb winds
• International Standard Atmosphere (ISA) temp deviation
• Estimated time enroute
• Trip distance (nm)
• True airspeed
• Planned arrival gate
• Planned passenger count
• Planned cargo weight
• Planned zero fuel weight (ZFWT)
• Block fuel
• Minimum fuel for takeoff
• Planned ramp weight
• Planned takeoff gross weight
• FMS Reserve Fuel - The sum of:
o ALTN FUEL with highest burn, and
o BALLAST/UNUSABLE fuel, and
o RESERVE FUEL
• Planned landing weight
• Initial Cost Index
Recall what information is listed in the Wind Data Block of the Flight Plan.
• The Wind Data Block depicts wind and temperature information for all fixes past Top of Climb and prior to Top of Descent. The Descent Forecast Winds appear below the enroute Forecast Winds.
• Enroute Forecast Winds
▪ The first line of data at each fix depicts:
o The planned flight level at that fix, and
o Wind data at that fix in each altitude column. Winds are read as a two digit direction (True) and three digit velocity.
▪ The second line of data depicts:
o TROP = forecast top flight level altitude of the troposphere at the fix,
o SAT = forecast static air temperature (C) for each altitude column, and
o TAT = forecast total air temperature (C) for each altitude column.
• Descent Forecast Winds
▪ Flight Levels/altitudes across the top line and the corresponding wind values on the second line.
Recall significant changes that require dispatcher notification.
- Lateral deviations of more than 100 nm from planned route
- Altitude deviations of more than 4,000 feet from the planned cruise altitude for more than 30 minutes
- Any condition which will affect ETA by more than 15 minutes
- Any change which will cause the flight to arrive at the destination or designated alternate airport with less than minimum FAR fuel reserves
- Greater than planned fuel consumption
Recall where takeoff and landing visibility requirements are located.
Refer to the ‘Ops Specs Section’ of the Airway Manual. Select Takeoff Minima or Approach minima as applicable.
Recall when a takeoff alternate is required.
Any time a flight is unable to return to the departure airport with CAT 1 approach minimums or better.
Recall the information listed in the Header Block of the WDR.
- The flight number, ship number, city pair and release number
- The WDR date and time
- The passenger load, the flight deck and flight attendant jumpseat riders
- The cargo load
Recall the information listed in the FMS Block of the WDR.
- FUEL - Total fuel load and expected taxi fuel.
- TANK - Fuel quantities displayed by individual tank rounded to the nearest hundred pounds.
- RMWP - Planned aircraft weight at the gate.
- ZFWT - Zero Fuel Weight for entry into the FMS.
- TOWT - Takeoff weight and TOCG (takeoff CG). TOWT is calculated by subtracting taxi fuel from RMWT.
- FLAP / STAB - Stabilizer settings for all displayed takeoff flap settings.
Recall the information listed in the Performance Block of the WDR.
• Takeoff runway/intersection data (example *26L*).
o 26L – Standard, full length.
o 26L- F1200CB – Rwy 26L, first 1200 ft have been cutback, (L1200CB indicates a cutback of the last 1200 ft)
o 26L-E13 Intersection takeoff from taxiway E13
• Performance data for an intersection is valid for that named position, in addition to any point on the same runway prior to that intersection.
Recall how to determine the contaminate level of the runway.
Possible contamination codes:
• D - Dry
• W - Slippery Wet – (A runway which is wet and on which the Captain considers the aircraft’s braking capability to be degraded, or a runway covered with packed snow.)
• I – Icy – (A runway whose surface is covered by ice.)
• Q - Quarter Clutter – (1/4 inch clutter) A runway whose surface is covered by an equivalent standing water depth of between 0.14 and 0.25 inches.
• H - Half Clutter – (1/2 inch clutter) A runway whose surface is covered by an equivalent standing water depth of between 0.26 and 0.50 inches.
The WDR will display the primary contaminant level and Slippery Wet (W). If Slippery Wet (W) is the primary contaminant, the secondary selection will be Dry (D).
Recall if Dry takeoff performance numbers can be used on a Wet grooved runway.
The 737NG was certified with Wet performance numbers. Therefore, these aircraft must use Wet numbers if the runway surface is not dry.
Recall the meaning of 51 when listed in the performance block.
51 is the assumed temperature in degrees Celsius (could be another numerical value)
Recall the meaning of TO when listed in the Thrust/Flap column of performance block.
TO - Full rated thrust. The associated climb limit weight appears in the CLIMB column and the associated Runway Allowable Takeoff Weight is shown in the RATOW column.
Recall the meaning of /01 when listed in the performance block.
/01 – Flap setting for the given performance set
• There will only be one flap setting per WDR contaminant, though primary and secondary contaminants may use different flap settings. **ATTN MULTI FLAP** will appear if this occurs.
Recall how to identify the maximum wind values and takeoff speeds for the performance set.
- “HW” or “TW” for headwind/tailwind components are followed by two digit winds.
- HW05 would indicate that five knots is minimum required headwind to takeoff with that flap/power combination. This is accompanied by the **HW REQ FOR T/O** note.
- TW06 would indicate that six knots is the maximum acceptable tailwind for that flap/power combination.
- V-speeds are displayed as two digits: V1 of 22 would actually be 122 knots.
Recall how to identify performance limiting notes for the performance set.
Performance limiting notes are in the right most column:
• TO1- Takeoff 1 Fixed Derate
• TO2- Takeoff 2 Fixed Derate
• BOF- Engine bleeds off
Recall the meaning of CLIMB and RATOW on the WDR.
Climb Limit and RATOW weights are presented in 1000s of pounds. RATOW is based on reported wind.
Recall the meaning of TAXI FUEL BURN message.
This message will alert the crew that a minimum amount of fuel must be burned for at least one listed power setting for that runway.
Recall what information is listed in the Notes Block of the WDR.
- MEL-NOTES-RMKS: will include MEL/CDL items, live animal alerts, and other remarks or messages.
- **TAKEOFF ENGINE AI PENALTIES APPLIED** - Indicates that performance adjustments are not required for engine anti ice on takeoff.
Explain how to determine Operational Landing Distances in the ODM.
Refer to the Operational Landing Distances Chart in the ODM. Using the chart, reference the flap setting (as applicable), aircraft weight, braking action, autobrake selection and corrections for an actual landing distance
