DC System
EPs
AC System
Switchology
Misc.
100
The approximate amount of time the battery will be able to power the DC electrical system with the CPLT AVIONICS switch to OFF.
What is 60 minutes? FM 1-48
100
The DC bus that, if lost, will result in Mode 4 failure that cannot be regained
What is the # 1 (copilot)? FM 3-27
100
This Alternator Control Unit function is disabled in flight.
What is underfrequency protection? FM 1-50
100
The item that is tested when the AC 26V PTT button is pushed
What is the 26V low-voltage detector? FM 1-52
100
The ampere-hour rating of the battery
What is 43 ah? FM 1-48
200
The bus that is powered DIRECTLY by DC external power.
What is the #2 main DC bus? FM Figure A-121
200
The AC system that you should attempt to recover first if both fail at different times
What is the last one that failed? FM 3-25
200
The 3-phase voltage provided by the MGB driven alternators
What is 200 VAC? FM 1-47
200
The switches that control the manual shed busses.
What are the AVIONICS switches? FM 1-49
200
The DC bus short that requires the Flight Mech audio control panel be switched to alternate
What is the #1 (copilot)? FM 3-27
300
The condition that will cause the EMERG T/R "ON" light to illuminate.
What will happen if both DC generators are failed or turned off? FM 1-49
300
The generator loadmeter that should be monitored following a generator failure
What are both? FM 3-27
300
The items that are unrecoverable with a #2 AC system failure.
What are TACAN, OADS, Radar, and Inst Lights? FM 3-26
300
The bus that retains power when the emergency electrical cutoff is thrown.
What is the battery bus? FM 1-47
300
The approximate Nr at which the alternators will kick off line when on deck.
What is 330 RPM? FM 1-50
400
The DC bus that powers the AFCS collective channel
What is the #2 (pilot)? FM 3-26
400
Your response to the following indications: *One 26 VAC FAIL light illuminated *AFCS pitch & roll channels disengaged *ADI, attitude gyro, and heading gyro failed on 1 side of inst panel. *All equipment on one main AC bus inoperative
What is: *FLIGHT CONTROLS - STABILIZE AIRCRAFT *AC 26V XFER SWITCH - PUSH IN THE DIRECTION OF THE ILLUMINATED FAIL LIGHT *AFCS - REENGAGE *if ECS failed - cool switch - off *land as soon as practicable FM 3-26
400
The primary “customer” for the power that comes from the 26 VAC transformers
What are the navigation instruments? FM 1-50
400
The voltmeter/loadmeter position that measures DC output from the transformer-rectifier
What is T/R? FM 1-52
400
The electrical system where the BTC light indicates that the #1 and #2 busses are actually connected (AC or DC)
What is DC? FM 1-50
500
The kVA rating of the DC starter/generators
What is 4.5 kVA? FM 1-48
500
The reason that CO2 should not be used to cool an overheating battery
What is static electricity generated by CO2 could cause an explosion? FM 3-28
500
The transformer output voltage where the AC 26 VAC FAIL light will illuminate.
What is 14 volts (+/- 1)? FM 1-50
500
The light that will extinguish to indicate that the DC external power has “START PROTECTION”
What is the BATTERY RELAY 2 OPEN light? FM 1-48
500
The power source for the emergency transformer/rectifier
What is the #2 AC Bus? FM 1-49
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