Term
| How many direct current power sources are available for normal operations in the IFR configuration? |
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Definition
| There are three DC power sources (main generator, stand-by generator, and main battery) available for normal operations in the IFR configuration. |
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Term
| What is the rating of the main generator? |
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Definition
| The main generator is rated at 28 VDC |
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Term
| What is the rating of the stand-by generator? |
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Definition
| The stand-by generator is rated at 28 VDC and 15 amperes. |
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Term
| What is the rating of the main battery in the nose of the helicopter? |
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Definition
| The main battery is rated at 24 VDC and 17 amperes. |
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Term
| What does the Voltage Monitoring System allow the pilot to monitor? |
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Definition
| The Voltage Monitoring System allows the pilot to monitor generators, batteries, and buss bars voltage. |
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Term
| What does an inverter do? |
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Definition
| An inverter converts direct current voltage to 115 volts alternating current (AC) to run two elements of the avionics package. |
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Term
| What is the rating of the stand-by battery? |
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Definition
| The stand-by battery is rated at 24 VDC. |
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Term
| How many buss bars are there in the IFR configuration? |
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Definition
| There are three buss bars (ESS 1, ESS 2, and NON-ESS) in the IFR configuration. |
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Term
| Which buss bar is the most protected? |
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Definition
| The pilot's buss bar (ESS 1) is the most protected buss bar. |
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Term
| Following the main generator's failure (MAIN GEN FAIL) what powers the ESS 2 buss bar? |
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Definition
| The main battery powers the ESS 2 buss bar in the event of the main generator's failure. |
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Term
| Following a main generator failure (MAIN GEN FAIL) what powers the NON ESS buss bar? |
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Definition
| The main battery powers the NON ESS buss bar provided the NON ESS switch is placed in the manual position; otherwise the NON ESS circuits are shed from the battery's load. |
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Term
| In the IFR configuration, how many power sources are there for starting? |
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Definition
| There are two power sources (main battery and auxiliary power unit) for starting. |
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Term
| In the event of a dual generator failure (MAIN GEN FAIL and STBY GEN FAIL) and main battery power becomes depleted, what powers the stand-by attitude indicator? |
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Definition
| The stand-by battery powers the stand-by attitude indicator for at least 30 minutes. |
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Term
| What airspeed should be avoided when the stand-by generator is powering the ESS 1 buss bar? |
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Definition
| Airspeed below 50 KIAS should be avoided for prolonged operation when the stand-by generator is providing power to the ESS 1 buss bar. |
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