Pre-Takeoff/Comm Nav Checklist (Charlie) Flashcards
“Twist Grip”
Scan gauges.
CAUTION: Do not exceed flight idle until transmission oil temperature is at least 15°C, transmission oil pressure is 50 psi or below, engine oil pressure is below 130 psi, and one minute of idle dwell time has elapsed since starter switch moved to the OFF position.
CAUTION: If the engine has been shut down for more than 15 minutes, failure to stabilize at idle speed for 1 minute may result in turbine damage.
Slowly rotate twist grip to 70% Ng.
“GREEN, GREEN, ABOVE 15°C, AND 1 MINUTE”
“70% Ng”
“VOLTMETER SELECT SWITCH”
Rotate the voltmeter knob to MAIN GEN.
“MAIN GEN”
“MAIN GEN SWITCH”
Move GEN switch to the RESET (aft) position, then to GEN (forward) position, and observe indications.
“RESET, THEN ON, GENERATOR LIGHT OUT, AND RISE IN VOLTS AND LOAD”
“BATTERY CART”
If still connected, signal for disconnecting battery cart.
“REMOVED” or “NOT USED”
“STANDBY GEN SWITCH”
Move STBY GEN switch to ON.
“ON, LIGHT OUT”
“STANDBY ATTITUDE INDICATOR SWITCH”
Move STBY ATT IND switch to ON, and check that the right gyro is starting to align.
“ON, GYRO CAGING”
“AVIONICS MASTER SWITCHES”
Move both upper and lower AVIONICS MASTER switches to ON.
Note: It is common that the pilot in the left seat will turn on the upper switch, and the pilot in the right seat will turn on the lower switch.
“ON”
“AVIONICS”
Verify avionics are powering up.
“ON”
“LOADMETER”
Check loadmeter gauge below 50%. If above 50%, monitor the loadmeter, and avoid engaging the ECS until below 50%. Generator load should decrease as battery recharges, and current flow from the generator to the battery drops off. The loadmeter should not read above 70%; indications above 70% with no decreasing trend may increase the risk of an electrical fire.
“CHECK, BELOW 50%”
“ECS”
Do not engage the ECS if the loadmeter indicates greater than 50%. When below 50%, select AIR COND, OFF or FAN. If Cabin Heat is desired, select ECS to FAN/HI and open the Cabin Heat valve on the overhead console. If windscreen is fogged up, the Defog Blower may be engaged.
“ON” or “OFF” or “FAN” as required.
“FLIGHT CONTROLS”
Ensure the rotor arc is clear prior to moving the rotor disk. Personnel may be inside the rotor arc during the check as long as they remain close to the fuselage.
(1) Force Trim check. Cyclic FT button - Depress. Check for cyclic freedom of movement by moving cyclic in an “X” pattern. Do not displace the cyclic more than 2 inches from center to avoid contacting the static stops. (2) Cyclic FT button- Release, move cyclic in a “+” pattern. You should feel force gradient as cyclic is displaced. When pressure is relieved, cyclic should return to its trimmed position. Check the tip-path for proper deflection as the cyclic is moved. (3) Yaw check – Apply pressure to both pedals and displace left pedal approximately 2 inches forward, then release. Attempt to neutralize pedals by pulling of left pedal only, then release. Note pedals return to trimmed position.
“CLEAR RIGHT” “Clear Left”
Guard the collective with your leg and turn the FORCE TRIM switch to the OFF position.
(1) Check for freedom of movement in cyclic (in an “X” pattern) and pedals. To avoid yawing on spot, do not displace pedals more than 2 inches.
(2) Collective check. Raise collective 1 – 2 inches, check for any binding, and listen for the Low Nr audio tone (steady tone). Return collective to full down position.
Guard the collective with your leg and turn the HYDRAULIC SYSTEM switch OFF.
HYDRAULIC PRESSURE caution light should illuminate. Check for freedom of control movement by moving cyclic in an “X” pattern. Raise the collective approximately 2 inches and return it to the full down position. Control movement will require more force than with the boost on and some feedback will be felt in the controls.
Guard the collective with your leg and turn the HYDRAULIC SYSTEM switch to the ON position.
Guard the collective with your leg and turn the FORCE TRIM switch to the ON position.
“FORCE TRIM – OFF”
“HYDRAULICS OFF, LIGHT ON”
“HYDRAULICS ON, LIGHT OUT”
“FORCE TRIM ON. CONTROL CHECK COMPLETE”
“SERVO INDICATORS”
Verify galvanometers for pitch, roll, yaw servos are centered on white mark.
“CENTERED”
“FCS CONTROLLER TEST”
Press the TEST button on the FCS controller panel. Verify the TEST 1 light is illuminated amber, the STAB light, FT flight, and ALT light are illuminated green, the ALT warning light is illuminated amber, and the FCS caution light is illuminated.
“THREE GREEN, THREE AMBER”
Press the TEST button again. Verify the TEST 2 light is illuminated amber. Press the STAB button, and verify the STAB light is illuminated green. Press the ALT button, and verify the ALT light illuminated green, extinguishes after approximately 0.5 seconds, and the ALT warning light blinks amber, stopping in 8-12 seconds.
Press the TEST button. Verify the test number lights are no longer illuminated. Cycle both FCS cyclic buttons, verifying both cyclics are capable of engaging/disengaging FCS STAB. Disengage FCS STAB.
“TEST COMPLETE”
“ENGINE ANTI-ICING”
Check as required. When ground OAT is 10°C or higher, the check is not required.
When ground OAT is less than 10°C, note TOT, turn ANTI-ICE switch to the ON position and verify rise in TOT. Turn ANTIICE switch to the OFF position and verify decrease in TOT.
Note: A normal rise is ~ 10-15 degrees C.
“NOT REQUIRED”
“ANTI-ICE ON, RISE IN TOT. ANTI-ICE OFF, DECREASE IN TOT”
“PITOT HEAT”
Check as required. When ground OAT is 10°C or higher, the check is not required.
When ground OAT is less than 10°C, move left pitot heat switch to HEAT (forward) position and confirm rise in load. Move left pitot heat switch to OFF (aft) position and confirm decrease in loadmeter. Repeat for right pitot heat switch.
Note: A normal rise is ~ 3%.
“NOT REQUIRED”
“PITOT HEAT ON, RISE IN LOADMETER. PITOT HEAT OFF, DECREASE IN LOADMETER”
