UH60M - PPC Flashcards
What are the planning standards that Computed values must be within?
Torque values ±2 percent.
Weight values ±500 pounds.
Fuel flow ±100 pounds per hour.
Airspeeds ±5 knots.
What are the acceptable resources for creating a PPC?
The approved performance planning software or the charts in the approved aircraft operator’s manual/checklist (CL).
When must a PPC be completed or recomputed?
Before every mission or if there is any change greater than
a. Free air temperature (FAT) ± 5 degrees Celsius.
b. Pressure altitude (PA) ± 1,000 feet.
c. Gross weight ± 500 pounds.
d. Engine torque factor (ETF) 0.05.
Which performance charts should be used when the UH-60M is in the clean configuration with the ESSS system installed and two 200 gallon tanks mounted on the outboard pylons?
High drag
With engine anti-ice on, how much is available torque per engine reduced?
20%
Name the four major sections of the PPC.
Departure, arrival, cruise, and remarks
When must the arrival section be completed?
When arrival conditions at the destination have increased from departure data by a minimum of 5*C, 1,000 feet PA, or 500 pounds.
What are the two methods for calculated the zero fuel weight?
Using the 365-4 or while at a hover using actual conditions and the chart in the CL
How is max torque available calculated?
Multiplying the max torque available number derived from the chart by the torque ratio number.
What two items in the departure data are calculated using current conditions?
GO/NO GO torque OGE/IGE, Item 10 and predicted hover torque, Item 12.
What does Critical Torque mean ?
Critical Torque is a dual engine torque value, which when exceeded, may not allow the aircraft to maintain %RPMR within normal limits under single–engine operations in the same flight conditions.
What does Continuous Torque Available mean?
Is the most torque the engines can produce continually and remain out of the 30 minute engine operating limitations.
Why is the Airspeed Correction chart used ?
To address IAS errors resulting from disturbed airflow in and around the pitot tubes when climbing at rates greater or less than 1400 fpm.
Exceeding Vne may cause what?
The aircraft to encounter the effects of retreating blade stall, compressibility, and/or aircraft structural damage.
What are other factors that can increase fuel burn that is not included charts?
Turning on bleed air for heater or engine anti-ice
