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37 Cards in this Set
- Front
- Back
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Caution for Starting APU on Battery Power
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To prevent heat damage to the System Processor (SP), the APU must be started within one minute of the initiation of battery operations when FAT is > 43 °C, within three minutes when FAT is between 32 °C and 43 °C, and within 20 minutes when FAT is < 32 °C.
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Warning about starting engines with BUCS engaged
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Do not start engines with BUCS engaged. BUCS can become engaged when a mistrack between the controls and the actuator is sensed. This commonly happens when external power is applied to the aircraft without hydraulic power. BUCS engagements may be cleared by applying hydraulic power and completing a FLT CNTRLS IBIT.
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Caution about EGIs and what will happen if both aren't showing the same information
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The Pilot will ensure that both EGIs have aligned properly and are displaying the same position, attitude and heading, POSITION CONFIDENCE values, valid DATE, TIME and GPS tracking. This will prevent the erroneous velocity data signals from the EGIs being sent to the Flight Management Computer (FMC), which should prevent an uncommanded scheduling of the Stabilator.
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When is maint required in reference to a BUCS test failure?
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Maintenance action is required after two consecutive failures of the Flight Controls IBIT.
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Notes regarding EGI problems
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• If one or both of the EGIs displays a position error greater than one nautical mile from the aircraft’s known position, or if the items listed in the EGI Operational Check are out of tolerance, perform the on ground manual reset and alignment procedure. Once complete, perform the EGI Opera- tional Check a second time. If the EGI is still out of tolerance during the second check, a maintenance action is required IAW the IETM.
• Longitude and latitude are displayed in degrees, minutes and 100ths of minutes. One minute equates to approximately one mile. • If the date and time is incorrect, re-enter the date and time. |
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Cautions regarding EGI Alignment
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In the event that one or both EGIs will not align after initial startup or after performing the ON-ground Manual Reset and Alignment Procedures, the aircraft shall not be flown until cleared by main- tenandce personnel.
With both EGIs disabled, attitude, heading, ground speed, flight path vector, velocity vector, and accelerations are not provided to the processors, displays, sights, weapons, or FMC. FMC functions such as SAS and Hold Modes will not be available. Manual control of the stabila- tor will be required. The Back-Up Control System will remain operational if required. |
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Inconsistent starting occurs when?
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The T700-GE-701C engine exhibits inconsistent starting capability above 6000 feet density altitude (inflight and ground). Starts above this density altitude may be unsuccessful and require an abort because of exceeding temperature limits.
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Cautions regarding starting
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• If engine 1 or 2 start advisory remains displayed after 66%-68% NG: Position ENG START switch to IGN ORIDE, then OFF.
• Prior to advancing POWER levers, ensure that both engines are stabilized (NP, NG, Torque% and Oil PSI). • While advancing POWER levers to FLY, ensure that both engines indicate a rise in TORQUE% to confirm that the sprag clutches are engaged. • If an engine indicates near 0% TORQUE, retard POWER lever of affected engine to OFF. |
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What must TGT be before idle during start?
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TGT must be less than 150° C or 80° C before moving power lever to IDLE.
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How to start second engine without APU
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Sufficient IPAS air is required for a successful 2nd engine start. Ensure the APU, external air source, or opposite engine at 95% NG is supplying sufficient IPAS air.
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How do you use the manual HIT table?
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When using TGT reference table, FAT must be rounded up and pressure altitude must be rounded off to the nearest value.
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Cautions associated with anti-ice
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• To prevent damage to the engines, the engine anti-ice system shall be manually activated when the aircraft is flown in visible moisture and Free Air Temperature (FAT) is less than +41° F / +5° C.
• When operating at high power settings, ensure anti-ice is in the manual mode. Failure of the anti-ice/detector during high power settings could re- sult in severe NP/NR droop. |
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Cautions associated with taxiing
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• Excessive cyclic displacement with low power settings will result in droop stop pounding.
• If forward cyclic inputs appear excessive while taxiing, increase collective as necessary. Appropriate collective setting is a function of cyclic displacement and surface conditions. • Excessive forward cyclic displacement with low power settings will result in high strap pack loads. |
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What note is associated with MTADS/MPNVS operations for prolonged times on ground?
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If you have been operating the MTADS/ MPNVS on the ground for 15 minutes or longer, perform a SANUC before takeoff.
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When are additional power checks required?
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Anytime the load or environmental conditions increase significantly (1,000 pounds gross weight, 5° C, or 1,000 feet PA), the aircrew will perform additional power checks.
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Caution associated with rapid hot refuel in dusty enviroments
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When using the Rapid Hot Refueling, Sandy Environment procedure (minimum torque), there is an increased probability of engine No.1 or No. 2 FUEL PSI LOW UFD/EUFD message, master caution illumunation and flame out (due to non-use of the single engine torque pull procedure). While filling the cells separately reduces the posibility of air in the crossfeed fuel line, air accumulation in the No. 1 engine fuel feed hose is not affected. Fuel flow velocity at low torque settings will not be sufficient to remove trapped air bubbles.
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Caution associated with no APU during engine shutdown
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If the APU is inoperative go to ENGINE SHUTDOWN (EXT PWR) PILOT/CPG. Failure to comply will result in loss of operating systems displays and indicating systems during shutdown.
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Caution associated with shutting down without cool down
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If an engine is shut down from above idle without being cooled for two minutes at IDLE and it is necessary to restart the engine, the restart should be accomplished within five minutes after shutdown. If the restart cannot be accomplished within five minutes, the engine shall be allowed to cool for four hours before attempting an engine restart.
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When is an entry in DA 2408-13-1 required?
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• Flown in loose grass environment.
• Operated within 10 nm of salt water. • Exposed to radioactivity. • Operated within 200 nm of volcanic area. |
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Caution associated with TADS/PNVS cold/hot soaked.
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During aircraft power up the TADS/PNVS components are susceptible to damage when either heat or cold soaked at temperatures below 40° F (4.4° C) or above 85° F (29.4° C). After electrical power is applied to the aircraft it is necessary to override the automatic TADS/PNVS power up sequence to lessen the probability of system degradation from occurring.
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Procedure for TADS/PNVS cold/hot soaked.
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1. Automatic TADS/PNVS power up sequence - Override (after APU start).
2. ECS cockpit temperature above 44° F (4.4° C) - Set. 3. Cockpit temperatures between 40° F (4.4° C) and 85° F (29.4° C) for ten minutes - Stabilize. 4. TADS and then PNVS power up sequence - Re- initiate. |
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FCR Cold weather operations, caution and procedure
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CAUTION--Commanding a BIT OVERRIDE under these conditions may result in damage to FCR hardware.
Under extreme cold conditions (≤ -24° F (-31° C), when power-up is commanded, the FCR will undergo a 10 minute warm-up exercise to warm MMA components. During the warm-up period the FCR will transmit intermittently until the process is completed. Following the hardware warm-up, the FCR resets and normal PBIT is run to completion or until a critical fault is detected. The timeline for warm-up and PBIT will be extended to a full 13 minutes under these conditions. |
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Cockpit fogging procedure (prior to fogging)
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Conditions are between 40° F and 70° F (4.5° C and 21° C) and greater than 70 percent relative humidity.
1. Set the cockpit temperature to 60° F (16° C) and select DEFOG OFF. 2. Select CANOPY ANTI-ICE ON for the remainder of the flight. |
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Cockpit fogging procedure (fogging has occurred)
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Should fogging occur, lower the cockpit set temperature below indicated return temperature to enable the cooling mode. Keep the cockpit set temperature at the new setting until the flight is complete.
1. Ensure the CANOPY ANTI-ICE is ON. 2. Select DEFOG ON. If canopy fogging is not visibly reduces, turn DEFOG OFF. |
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Caution associated with cockpit fogging
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If a crew member must change the cockpit set temperature, change the temperature in one cockpit at a time. To prevent the possibility of both cockpit transparencies fogging at the same time, do not change both cockpits simultaneously.
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Caution associated with clearing ice/snow from fuel
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Fuel draining from the affected component after several minutes of heat application does not necessarily indicate that all ice has melted. Ice may still remain in the unit and it could be a serious hazard to flight operations. Heat should be applied for a short time after fuel begins to flow from the drain and the drainage should be checked frequently until it is evident that all water has been removed.
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How to clear ice/snow from fuel lines
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If water collected in sumps has frozen (indicated by a lack of flow from drain), apply heat liberally and open drain frequently. Catch fuel and check for globules of water in the fuel. Continue sampling until fuel is free of all water globules.
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Caution associated with removing ice/snow
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Ice removal shall never be done by scraping or chipping. Remove ice by applying heat or de-ice liquid.
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Caution associated with teetering bearing warm-up
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It is recommended that the tail rotor teetering bearings warm-up procedure be accomplished as the last item of the ex- terior check during the flight crew pre- flight inspection. Between -20° C (-4° F) and -32° C (-26° F) the helicopter must be started and the tail rotor must be turning within 5 minutes of teeter bearing warm- up. Below -32° C (-26° F), elapsed time is reduced to 2 minutes. At a temperature of -32° C (-26° F) or below, the tail rotor must be cycled by an applied force no greater than 75 lb.
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How to warm-up teetering bearings
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When the blade can be pushed to the stop, the bearing has been sufficiently warmed up. At -20° C (-4° F), a final applied force of less than 75 lb is expected to reach the stops. Based on achieving a final applied force of 75 lb to reach the stops, the blades must be
cycled 1 time at -32° C (-26° F), 5 times at -42° C (-44° F) and 10 times at -54° C (-65° F). |
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How to exercise controls in cold weather
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To eliminate droop stop wear (in the event the main rotor blades move through a pitch change while resting on the droop stop), the flight crew should observe the following: At a temperature of -42° C (-44° F) or below and with a rotor speed of 101% NR, flat pitch, maintain neutral cyclic position for 1 minute. Then move the cyclic forward 1/2 in. (0.500) and hold for 1 minute. Move the cyclic forward ad- ditional 1/2 in. (0.500) and hold for 1 minute. Return flight controls to centered, neutral position. The total procedure requires 3 minutes after reaching normal rotor RPM and can be accomplished simultaneously with the engine warm-up procedures.
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Cold weather characteristics for engine oil
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During starts in extremely cold weather near -54° C (-65° F), the following oil pressure characteristics are typical:
a. Oil pressure may remain at zero from 20 to 30 seconds after initiating the start. Abort start if oil pressure does not register within 1 minute of initiating start. b. Once oil pressure begins to indicate on the MPD, it will increase rapidly and go over 120 psig limit. The pres- sure will decrease as oil temperature rises. This condition is considered normal. The time for oil pressure to decrease to 120 psig or below will depend on the severity of the ambient temperature. |
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Oil filter bypass during cold weather starts
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The UFD/EUFD advisory normally occurs when starting an engine with oil below normal operating temperatures because of the relatively high oil viscosity and/or the amount of contamination in the oil filter. The UFD/ EUFD advisory reads OIL (1 or 2) BYP. When oil tempera- ture reaches about 38° C (100° F) during engine warm-up, the advisory should go off.
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Engine warm-up procedures
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At temperatures between -17° C (1° F) and -43° C (-45° F), warm up engines during engine run-up for 3 minutes at IDLE. The power levers should reman at IDLE until the NGB temperatures indicate 20° C or above.
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Warning associated with rotor start/stop
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The maximum wind velocity for rotor start or stops is 45 kts from any direction. Ground operation of the aircraft in winds greater than 45 kts may cause the main rotor blades to contact the fuselage or the aircraft to roll over.
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Procedure for surface winds over 45 knts
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1. Aircraft - Head into the wind.
2. NP/NR - 101%. 3. TAIL WHEEL button - LOCK. 4. PARKING BRAKE - Set. 5. Stabilator - AUTO. 6. Cyclic and Collective - Adjust as required. |
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Procedure for turbulence
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1. Airspeed - Adjust as follows:
2. For moderate turbulence, airspeed should be less than 150 KTAS. |
