Wednesday, December 30, 2009

Bell helicopter Checklist . Bell 206B startup

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This is a typical Bell 206B III CHECK LIST.
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BEFORE START
FLIGHT CONTROLS-friction, movement, flat pitch, neutral
THROTTLE-Check movement, closed
LDG LTS switch OFF
ENGINE ANTI-ICING switch-OFF
HYDRAULIC SYSTEM switch-ON
FUEL VALVE switch-ON
Altimeter-Set to field elevation
Instruments/Gages-Static position at zero
Overhead switches-OFF
Generator switch-OFF
Circuit breakers-in -as required
Battery switch-ON -OFF, if external power used-
Observe TRANS OIL PRESS, ENG OUT,
ROTOR LOW RPM c/w lights & engine out audio
C/W lights test
TOT light test
ROTOR LOW RPM system
FUEL BOOST - circuit breakers in, check press, light off
ANTI-COLLISION-ON
TIE DOWN-REMOVED

ENGINE STARTING
Collective pitch-full down
Throttle-full closed
Rotors-clear
STARTER-Engage...TOT below 150'C./Check Voltage
-12% Below 0' F-13% 0 to 45' F-15% Above 45' F.
IGNITE, Let off, Add fuel.
ENG Oil pressure indication, main rotor turning by 25% N1
STARTER-Release 58%-let idle for 1 min.
Check Engine and Trans oil Press
N1 60 to 62% -25 seconds GPU start-
External power-removed. -40 seconds BATT start-
Throttle-70% N1
Generator switch-ON
Radio equip.-ON
Position LT switch-ON
CAUTION LT - circuit breaker-IN
Fuel boost pump pressure-check
Advance Throttle to full open position
N2 Governor check-97 to 100%

ENGINE RUN-UP CHECK
Engine anti-ice -ON -40'F and below w/moisture-
PITOT HEAT-ON -40'F and below w/moisture-
Hydraulic System check
Flight Controls-Friction as desired

BEFORE TAKEOFF
Electrical equipment-as required
Lighting-as required
Radios-as required
Throttle-Full open, set N2 100%
Power and Flight instruments-Normal operating range
Generator load-below 70%

ENGINE SHUTDOWN
Throttle-Flight Idle
Flight Controls-Friction
ENGINE ANTI-ICE-OFF
TOT-Stabilized for 2 minutes
IDLE Release button-Depress, Throttle Full Closed
N1 Decelerate to 0 and TOT Stabilizing
Apply Cyclic to minimize static stop contact
Radios-OFF
FUEL VALVE-OFF
Generator switch-OFF
Battery switch-OFF
ALL switches-OFF
Overhead circuit breakers-Out -as desired-

SECURE AIRCRAFT

NORMAL OPERATING INDICATIONS

Transmission- Pressure- 50 PSI
Temperature- 75'C
Engine- Pressure- 125PSI
Temperature- 75'C
Load Meter-<20%
Fuel Pressure- 12 to 16 PSI
N1--100% N2 Ground- 80%
-Normal cruise 80% Torque- 92 to 94%
TOT--100% N2 Ground) 600'C
-Normal cruise 80% Torque- 650' to 675'C
Torque--100% N2 Ground- 28 to 30%

OPERATING LIMITS

TORQUE- 100% -5 minutes)
110% -5 seconds-
TOT- 810'C -5 Minutes-
738'C -Max Continuous-
810'C to 843'C -Power Transient 6 Seconds
810'C to 927'C -Start & Shut down 10 Seconds-

Anyone do anything differently or would add anything??

1 comment:

  1. Looks normal to me, but I would add one thing that falls into the "establishing good habits will keep you out of trouble" category...
    On two different occasions I have seen two-bladed Bell helicopters started while they were still tied down. While teaching in Bells I challenged my students to always move the rotor away from being parallel with the fuselage to show the tie-down strap was removed.
    It's just good insurance!

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