SkyWest 175 Upgrade SV CORRECT
QUESTIONS & ANSWERS
What AC bus is energized during an electrical emergency after the RAT deploys? -
ANSWER AC essential bus
What items are on the AC STBY BUS? - ANSWER engine 1 exciter 1A
engine 2 exciter 2A
what items are on the AC ESS BUS - ANSWER AC fuel pump 2A
ACMP 3A
SF ACE 1 flap ch 1 AC feed
SF ACE 2 slat ch 2 AC feed
what is the purpose of an inverter? - ANSWER converts 28V DC power to 115V AC
power
- to supply the STBY AC BUS when AC power is not available.
what is the purpose of a Transformer Rectifier unit? - ANSWER converts 115V AC
power to 28V DC power
- there are three of them
-power DC busses , batt busses and charge the batteries
-if you lose one TRU the others will compensate as long as TRU bus tie is in auto
what is the difference between OFF and DISC on either IDG selector? - ANSWER OFF
- generator line contactor opens and trips IDG offline
DISC - mechanically disconnects the IDG and flight crew cant recconect.
what, operationally, is powered even while the batteries are off? - ANSWER Hot batt
bus
name some items on the HOT BATT BUS. - ANSWER courtesy/service lights FWD
-DC ceiling lights
-ENGINE 1A & 2A fire extinguish
-engine 1B & 2B fire extinguish
- refueling panel
-engine fuel SOV 1&2
- hydraulic SYS SOV 1&2
what will cause the RAT to deploy automatically? - ANSWER When AC power sources
are not powering the AC busses
- takes 8 seconds to deploy
-powers AC and DC ESS BUS
, what speed is required to ensure RAT continues to provide electrical power - ANSWER
130 kts
what happens when you pull the ENG fire handle? - ANSWER - engine fuel shutoff
valve
-engine hydraulic shutoff valve
- engine bleed air shutoff valve
- crossbleed shutoff valve
what happens when i rotate the fire handle? - ANSWER extinguisher bottle is
discharged into the associated engine
what does the APU emergency stop button do? - ANSWER - closes APU fuel shutoff
valve
- shuts down APU with no cool down period
- white striped bar on lower half of the button
what does the APU fire extinguish button do? - ANSWER - discharges APU fire bottle
- shuts down APU through FADEC
- closes APU fuel SOV
- EICAS msg APU FIREX BTL DISCH.
After pressing the EMER ENTRY push button how long without pressing inhibit button
until the door unlocks? - ANSWER 30 seconds
after pressing the inhibit button, how long will the system remain inhibited? - ANSWER
500 seconds
what conditions provide a green light on the nose wheel prior to pushback? - ANSWER
Brakes off and steering off
minimum fuel - ANSWER 2250
emergency fuel - ANSWER 1500
Max ramp weight - ANSWER 85870
Max takeoff weight - ANSWER 85517
Max landing weight - ANSWER 74957
Max zero fuel weight - ANSWER 69886
calculate Vap - ANSWER Vap = 1/2 the headwind plus the gust
QUESTIONS & ANSWERS
What AC bus is energized during an electrical emergency after the RAT deploys? -
ANSWER AC essential bus
What items are on the AC STBY BUS? - ANSWER engine 1 exciter 1A
engine 2 exciter 2A
what items are on the AC ESS BUS - ANSWER AC fuel pump 2A
ACMP 3A
SF ACE 1 flap ch 1 AC feed
SF ACE 2 slat ch 2 AC feed
what is the purpose of an inverter? - ANSWER converts 28V DC power to 115V AC
power
- to supply the STBY AC BUS when AC power is not available.
what is the purpose of a Transformer Rectifier unit? - ANSWER converts 115V AC
power to 28V DC power
- there are three of them
-power DC busses , batt busses and charge the batteries
-if you lose one TRU the others will compensate as long as TRU bus tie is in auto
what is the difference between OFF and DISC on either IDG selector? - ANSWER OFF
- generator line contactor opens and trips IDG offline
DISC - mechanically disconnects the IDG and flight crew cant recconect.
what, operationally, is powered even while the batteries are off? - ANSWER Hot batt
bus
name some items on the HOT BATT BUS. - ANSWER courtesy/service lights FWD
-DC ceiling lights
-ENGINE 1A & 2A fire extinguish
-engine 1B & 2B fire extinguish
- refueling panel
-engine fuel SOV 1&2
- hydraulic SYS SOV 1&2
what will cause the RAT to deploy automatically? - ANSWER When AC power sources
are not powering the AC busses
- takes 8 seconds to deploy
-powers AC and DC ESS BUS
, what speed is required to ensure RAT continues to provide electrical power - ANSWER
130 kts
what happens when you pull the ENG fire handle? - ANSWER - engine fuel shutoff
valve
-engine hydraulic shutoff valve
- engine bleed air shutoff valve
- crossbleed shutoff valve
what happens when i rotate the fire handle? - ANSWER extinguisher bottle is
discharged into the associated engine
what does the APU emergency stop button do? - ANSWER - closes APU fuel shutoff
valve
- shuts down APU with no cool down period
- white striped bar on lower half of the button
what does the APU fire extinguish button do? - ANSWER - discharges APU fire bottle
- shuts down APU through FADEC
- closes APU fuel SOV
- EICAS msg APU FIREX BTL DISCH.
After pressing the EMER ENTRY push button how long without pressing inhibit button
until the door unlocks? - ANSWER 30 seconds
after pressing the inhibit button, how long will the system remain inhibited? - ANSWER
500 seconds
what conditions provide a green light on the nose wheel prior to pushback? - ANSWER
Brakes off and steering off
minimum fuel - ANSWER 2250
emergency fuel - ANSWER 1500
Max ramp weight - ANSWER 85870
Max takeoff weight - ANSWER 85517
Max landing weight - ANSWER 74957
Max zero fuel weight - ANSWER 69886
calculate Vap - ANSWER Vap = 1/2 the headwind plus the gust
