Difference between revisions of "TASK 1010"

Latest revision as of 05:48, 20 February 2020

Exract: TC 1-211 AIRCREW TRAINING MANUAL UTILITY HELICOPTER, UH-1H/V SERIES

TASK 1010
Prepare performance planning card

CONDITIONS: Given data on DD Form 365-4 (Weight and Balance Clearance Form F–
Transport/Tactical), the aircraft operator’s manual, the environmental conditions for the mission, the
engine calibration factor and a blank DA Form 7243-R (UH-1 Performance Planning Card).

Note: The charts in the U.S. Army Aviation and Missile Command (AMCOM)-approved
aircraft operator’s manual, or the AMCOM approved performance planning software must be
used for performance planning.

STANDARDS: Appropriate common standards plus these additions/modifications:
1. Determine performance planning data necessary to complete the mission.
2. Compute torque values ±1 pound per square inch (psi).
3. Compute gross weight values ±200 pounds.
4. Compute fuel flow ±50 pounds per hour.
5. Compute airspeeds ±5 knots indicated airspeed (KIAS).
6. Correctly determine maximum torque available, maximum allowable gross weight (GWT)
Out of Ground Effect (OGE), and GO/NO-GO OGE using tabular data found in the operator’s
manual when an update is required.

DESCRIPTION:
1. Crew actions. The pilot in command (PC) will compute or direct other rated crewmembers to
compute the aircraft performance data required to complete the mission. The PC will ensure
aircraft performance meets mission requirements and aircraft limitations will not be exceeded.
The most accurate performance data can be obtained by using existing conditions. Predicted
hover torque should be determined using the conditions forecasted for the time of departure.

2. Procedures.
 a. DA Form 7243-R may be used as an aid to organize performance planning data required
 for the mission; this form must be used for evaluations. Instructions for completing the
 performance planning card (PPC) are provided below; the numbered paragraphs coincide
 with the circled numbers on the PPC in figures 4-2(a) and 4-2(b). PPC items that have an
 asterisk (*) are mandatory for each flight. The PC will compute other data when required.
 
 b. The same PPC data will suffice for consecutive takeoffs and landings when aircraft GWT
 or environmental conditions have not changed significantly, that is, an increase of 200
 pounds GWT, an increase of 500 pounds pressure altitude (PA), or a change of ± 5 degrees
 Celsius.

Note: The current conditions section of the PPC, items (1) through (14), is based on
conditions existing at initial takeoff (departure). Crewmembers use this information to
validate the PPC by comparing the aircraft’s actual performance to the planned performance.

If the current conditions are the same as the maximum conditions for the mission period, the
maximum condition section need not be completed.

(1) PA.* Record the current PA forecast for the time of departure.

(2) FAT.* Record the current free air temperature (FAT) forecast for the time of
departure.

(3) Takeoff GWT.* Record the current takeoff (GWT) for the time of departure.

(4) Load.* Record the maximum weight of the load(s) expected during the mission.

(5) Cal Factor.* Record the calibration factor (data plate torque)

(6) Fuel. Record the takeoff fuel weight for the time of departure.

(7) Max Torque Avail.* Using current conditions and the maximum torque available
(30-minute operation) chart, record the chart value and compute and record the indicated
maximum torque available.

Note: The torque correction value (chart value to indicated), obtained from (7) above, may
be applied to all subsequent torque values on the PPC.

(8) Max Allowable GWT (IGE).* Using current conditions and the hover ceiling chart,
compute and record the maximum allowable GWT (IGE). If the 5-foot skid height line is
not intersected, record the maximum allowable GWT (IGE) as 9,500 pounds.

(9) Max Allowable GWT (OGE). Using current conditions and the hover ceiling chart,
compute and record the maximum allowable GWT (OGE).

(10) Predicted Hover Torque.* Using current conditions, the hover power required
chart, and the takeoff gross weight, compute and record the torque required to hover at
a5-foot skid height (or as required).

(11) Predicted Hover Torque (OGE). Using current conditions, the hover power
required chart, and the takeoff gross weight, compute and record the torque required to
hover at a 50-foot skid height (OGE).

(12) GO/NO-GO Torque (IGE).* Using the hover power required chart, the maximum
allowable gross weight (IGE), and a 5-foot skid height (or as required), record the
GO/NO-GO torque (IGE).

(13) GO/NO-GO Torque (OGE). Using the hover power required chart, the maximum
allowable gross weight (OGE), and a 5-foot skid height, record the GO/NO-GO torque
(OGE). (For external load operations, use a skid height line that will ensure a 5-foot load
height.)

(14) Directional Control Margin (DCM).* Using sheet 1 of the control margin chart and
the takeoff gross weight, record the maximum right crosswind component (90 degrees)
that may be encountered and still maintain a 10 percent DCM. If the highest reported or
forecast wind (steady or gust) is above the DCM (right crosswind) value, the DCM may
be less than 10 percent. During hover or slow-speed operations with a right cross wind
approximately 35 to 150 degrees from the nose of the aircraft, a less than 10 percent
DCM may be available. During flights with winds greater than 10 knots and
approximately 100 to 260 degrees from the nose of the aircraft, a reduction of
longitudinal cyclic control may be experienced. The crew should avoid hover or slowspeed
operations with wind from these quadrants. (Sheet 2 of the control margin chart
presents areas to avoid during crosswinds and tailwinds.)

Note: The maximum conditions section of the PPC, items (15) through (24), is used to
predict the aircraft’s performance capabilities under the maximum PA, temperature, and
winds forecast for the mission.

(15) PA.* Record the maximum PA forecast for the mission period.

(16) FAT.* Record the maximum FAT forecast for the mission period.

(17) Load.* Record the maximum weight of the load(s) (in pounds) expected during the
mission.

(18) Fuel. Record the takeoff fuel weight.

(19) Max Torque Avail.* Using maximum conditions, compute the maximum torque
available as described in (7) above.

(20) Max Allowable GWT (IGE).* Using maximum conditions, compute the maximum
allowable GWT (IGE) as described in (8) above.

(21) Max Allowable GWT (OGE). Using maximum conditions, compute the maximum
allowable GWT (OGE) as described in (9) above.

(22) GO/NO-GO Torque (IGE).* Using the hover power required chart, the maximum
allowable gross weight (IGE), and a 5-foot skid height (or as required), record the
GO/NO-GO torque (IGE).

(23) GO/NO-GO Torque (OGE). Using the hover power required chart, the maximum
allowable gross weight (OGE), and a5-foot skid height, record the GO/NO-GO torque
(OGE). (For external load operations, use a skid height line that will ensure a 5-foot load
height.)

(24) DCM.* Using current conditions, compute the DCM as described in (14) above.

Note: The cruise data section, items (25) through (37), is used to predict the aircraft’s
performance at a planned cruise altitude and airspeed. For operations that involve several
changes in conditions, the RCM is expected to use his best judgment in selecting performance
criteria.

(25) PA. Record the planned cruise PA.

(26) FAT. Record the forecast FAT at cruise altitude.

(27) GWT. Record the aircraft GWT for anticipated cruise conditions.

(28) Cruise IAS.* Using the cruise chart, record the indicated airspeed (IAS) for
anticipated cruise conditions.

(29) Cruise IND Torque. Using the cruise chart, in record the indicated torque required
to maintain the airspeed in (28) above.

(30) Cruise Fuel Flow.* Using the cruise chart record the predicted fuel flow at cruise
IAS.

(31) Max End or R/C IAS. Using the cruise chart, record the maximum endurance or
maximum rate of climb (R/C) IAS.

(32) Max End or R/C IND Torque. Using the cruise chart, record the indicated torque
required to maintain maximum endurance or maximum R/C IAS.

(33) Max End or R/C Fuel Flow. Using the cruise chart, record the predicted fuel flow
at maximum endurance or maximum R/C IAS.

(34) Max Range IAS. Using the cruise chart, record the maximum range IAS.

(35) Max Range Ind Torque. Using the cruise chart, record the indicated torque required
to maintain maximum range IAS.

(36) Max Range Fuel Flow. Using the cruise chart, record the predicted fuel flow at
maximum range IAS.

(37) Vne (velocity never to exceed) IAS.* Using the airspeed operating limits chart,
record the maximum allowable airspeed at cruise altitude.

Note: The fuel management section, items (38) through (42), is used to record in-flight fuel
consumption. The use of this section is not mandatory. (Task 1048 discusses fuel
management procedures.)

(38) Start. Record the indicated fuel weight and clock time to initiate the fuel
consumption check.

(39) Stop. Record the indicated fuel weight and clock time to close the fuel
consumption check.

(40) PPH. Record the computed fuel consumption rate in pounds per hour (PPH).

(41) Reserve. Record the computed indicated fuel weight and clock time to meet the
required fuel reserve.

(42) Burnout. Record the computed and clock time at zero fuel weight.

Note: The weight computation section, items (43) through (49), is used to compute an
increase in aircraft weight and load. Critical mission requirements may require the addition of
passengers or equipment during the flight. The use of this section is not mandatory. However,
the PC must ensure that the weight and balance limits are not exceeded. (Task 1012 discusses
the weight and balance limits.)

(43) Basic Weight. Record the basic aircraft weight from DD Form 365-4.

(44) Crew and Flt Equip Weight. Record the crew and flight equipment weight from
DD Form 365-4 or as determined by the crew.

(45) Mission Equip Weight. Record the mission equipment weight (for example,
weapons) from DD Form 365-4 or as determined by the crew.

(46) Operating Weight. Record the operating weight from DD Form 365-4 or as
determined by the crew. (Add basic weight, crew and flight equipment weight, and
mission equipment weight to obtain operating weight.)

(47) Fuel Weight. Record the fuel weight from DD Form 365-4 or the current fuel
weight.

(48) Passenger (PAX), Baggage, Cargo, and Ammo Weight. Record the weight of these
items from DD Form 365-4 or weight as determined by the crew.

(49) Takeoff GWT. Record the takeoff GWT by adding operating weight, fuel weight,
and additional passengers, baggage, cargo, and ammunition weights.

Note: The Remarks section is used to record pertinent performance planning remarks.

Note: Tabular performance data charts are used to aid in performance planning. They
provide an easy-to-use device in the cockpit and may be used during flights that require
current data. (See Task 1011)

TRAINING AND EVALUATION REQUIREMENTS:
1. Training will be conducted academically.
2. Evaluation will be conducted academically.

Note: During evaluations, at the discretion of the evaluator, the PPC will be computed in its
entirety, utilizing the appropriate aircraft operator’s manual.

REFERENCES: Appropriate common references.
 
File:1010 1.png
Figure 4-2(a). DA Form 7243-R, UH-1 Performance planning card (front)

File:1010 2.png
Figure 4-2(b). DA Form 7243-R, UH-1 Performance planning card (back)