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29 Cards in this Set
- Front
- Back
When is the OEI HI operation enabled?
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Any time the FADEC detects a 6% split (DIF N1) or frozen fuel meter (Major FADEC Failure) If in training mode the OEI LO range
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A yellow or red clock appears on the bottom of the FLI page when..
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operating in the corresponding range OEI LO or OEI HI
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What are the three different OEI range's?
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Continuous, CT
OEI LO 2 min OEI HI 30 second |
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OEI usage can be accessed where?
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the VEMD status page.
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How is the EBCAU energized?
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By switching the Fadec switch to Backup on the upper quadrant.
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What are the FADEC'S main functions?
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Starting, speed control, automatic back-up control, overspeed protection monitoring, and fault management
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The BIM provides......
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Overspeed protection, it also acts as a starter relay between each DECU and it's respective engine.
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What would happen if a DECU channel were to fail?
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The other DECU takes over all operations.
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If both DECU channels were to fail .....
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The EBCAU (when selected) can provide control of engine.
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The Emergency Backup Control Auxiliary Unit is designed to...
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To provide emergency control of the engine in the event of a dual channel FADEC Failure.
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What happens when the FADEC's training switch is selected?
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The simulated failed engine is reduced to 320 RPM N2 and single engine FLI is displayed on the VEMD.
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If in training mode and NR droops below 320 RPM .....
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the "idle" engine will provide power up to the actual selected OEI stop to prevent excessive droop.
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What are the ratios to drive the main rotor and tail rotor?
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Main Rotor 17 to 1
Tail rotor 1.5 to 1 |
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What is the MGB total oil quantity?
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9.34 quarts
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The MGB alternators supply?
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200 volts three phase 115 volts single phase.
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Engine driven alternators provide?
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100 volts three phase 48 single phase to their respective fadec when N1 is at or above 68%.
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What happens in the event of a dual channel alternator failure?
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The internal transformer rectifier will enable use of aircraft DC for FADEC Operation.
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What is the output of the starter generators?
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28 Volts DC whenever the engines are operating at or above 60 % N1
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What is a level 1 FADEC Failure?
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(loss of redundancy) a TOT signal loss will be warned by s flashing GOV light when FADEc control switch is in idle or off.
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What is a level 2 Fadec Failure?
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(loss of a non redundant resource) such as a FADEC crosstalk failure will manifest as a steady GOV light Level 2 represents a degraded operation state of the FADEC
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What is a level 3 Fadec failure?
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Level 3 is a major FADEC failure such as a dual channel FADEC failure and manifests itself as a FADEC fail a red engine status ligtht and frozen fuel flow at its present value.
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What is the normal FADEC torque limitation?
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110%
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What are the sliding door speeds?
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80 knots for movement100 knots for locked open120 knots for removed
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What are the hatch speeds?
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60 forward 30 sideward for movement80 forward 35 sideward when open and locked
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What five pages are on the VEMD?
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Fuel, Vehicle, Status, FLI, EPC
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What is HIPSARM?When will you be in a HIPSARM situation?
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HIPSARM - Hover Increased Power Search and Rescue MissionHIPSARM will not occur unless you are in hover operations above 8.8 FLI, with N1 or TOT as the limiting factor for more then 5 minutes
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N1's are monitored by three N1 sensors (a,b,c) where do these signals go to?
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A and B go to the FADECC goes to the EBCAU
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N2's are monitored by three sensors (a,b,c) where do these signals go?
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A goes directly to the pilots Nr gauge in the cockpitB and C go to the FACED and VEMD for N2 speed control and protection.
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_____ % of your _____ sensors the BIM with enable its overspeed protection, freezing the engine from going any higher.
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122.4% (±1), N2B or N2C
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