SKYWEST ERJ 175 SYSTEMS
CORRECT QUESTIONS & ANSWERS
Emergency Equipment - ANSWER • PBE
• Halon Fire Ext
• Crash Axe
• Flashlight 2
• Oxygen Mask 3
• Escape Rope 2
• Life Vest 3
What are you looking for when battery 1 on and battery 2 Auto? - ANSWER • Screen 2
& 3 on
• IESS powering up (90 sec alignment)
• Battery Voltage (Min 22.5V, 21.0 - 22.5 Recharge, < 21.0 write up)
What is the significance about 22.5V - ANSWER 10 minutes of battery power with 2
APU start attempts
What are we looking for when performing the Fire Extinguisher Test? - ANSWER • 6
Lights on overhead panel
• 5 EICAS messages
• 2 Master Warnings
• 2 ITT Fires
• 2 Aural Warnings
APU will auto shut down in flight: - ANSWER • Under speed
• FADEC critical fault
• Overspeed
APU will auto shut down on the ground: - ANSWER • Under speed
• FADEC critical fault
• Overspeed
• Sensor fail
• High oil temp
• EGT (high)
• Low oil pressure
• Fire
APU FADEC fire detection automatic - ANSWER • On Ground: 10 seconds lag on
shutting it off.
• Anytime: 1 minute later the APU emergency stop button will light up.
GPU can be used for APU start - ANSWER Replaces batt 2 but can't replace batt 1
, If APU is accidentally selected off? - ANSWER It can be turned back on before the 1
min cool down is complete
What are the 3 conditions that prevent the spoilers from engaging or to close if open? -
ANSWER • Low Speed < 180 knots.
• 70 degrees Thrust Lever Angle
• Flaps 2 or greater.
Priority of pitch trim switches - ANSWER • Backup
• CA
• FO
• AP
Trims time out? Switch lockout? - ANSWER • 3 sec
• 7 sec 1/2 switch selection
AC ESS bus - ANSWER • ACMP 3A
• AC Fuel pump 2
• Slat ch 2
• Flap ch 1
RAT speeds? - ANSWER • 150 kts to spin up
• 130 kts minimum for power
• Vmo/Mmo max
RAT powers which bus? - ANSWER AC ESS and won't let it go.
How do you know RAT has established power? - ANSWER BATT DISCHARGING
disappears
How long are Elec PBIT & Hyd PBIT good for? - ANSWER 50 hrs
How long does the Elec PBIT take to run? - ANSWER 3 minutes
When does the Elec PBIT run? - ANSWER Automatically when the AC power is being
used
How do you know the Elec PBIT is running? - ANSWER "FLT CTRL TEST IN PROG"
Status msg on EICAS
What causes the Elec PBIT to be interrupted? - ANSWER • Any hydraulic pump is
running
• Flight control Mode Panel switches are cycled
• The AC power is interrupted.
CORRECT QUESTIONS & ANSWERS
Emergency Equipment - ANSWER • PBE
• Halon Fire Ext
• Crash Axe
• Flashlight 2
• Oxygen Mask 3
• Escape Rope 2
• Life Vest 3
What are you looking for when battery 1 on and battery 2 Auto? - ANSWER • Screen 2
& 3 on
• IESS powering up (90 sec alignment)
• Battery Voltage (Min 22.5V, 21.0 - 22.5 Recharge, < 21.0 write up)
What is the significance about 22.5V - ANSWER 10 minutes of battery power with 2
APU start attempts
What are we looking for when performing the Fire Extinguisher Test? - ANSWER • 6
Lights on overhead panel
• 5 EICAS messages
• 2 Master Warnings
• 2 ITT Fires
• 2 Aural Warnings
APU will auto shut down in flight: - ANSWER • Under speed
• FADEC critical fault
• Overspeed
APU will auto shut down on the ground: - ANSWER • Under speed
• FADEC critical fault
• Overspeed
• Sensor fail
• High oil temp
• EGT (high)
• Low oil pressure
• Fire
APU FADEC fire detection automatic - ANSWER • On Ground: 10 seconds lag on
shutting it off.
• Anytime: 1 minute later the APU emergency stop button will light up.
GPU can be used for APU start - ANSWER Replaces batt 2 but can't replace batt 1
, If APU is accidentally selected off? - ANSWER It can be turned back on before the 1
min cool down is complete
What are the 3 conditions that prevent the spoilers from engaging or to close if open? -
ANSWER • Low Speed < 180 knots.
• 70 degrees Thrust Lever Angle
• Flaps 2 or greater.
Priority of pitch trim switches - ANSWER • Backup
• CA
• FO
• AP
Trims time out? Switch lockout? - ANSWER • 3 sec
• 7 sec 1/2 switch selection
AC ESS bus - ANSWER • ACMP 3A
• AC Fuel pump 2
• Slat ch 2
• Flap ch 1
RAT speeds? - ANSWER • 150 kts to spin up
• 130 kts minimum for power
• Vmo/Mmo max
RAT powers which bus? - ANSWER AC ESS and won't let it go.
How do you know RAT has established power? - ANSWER BATT DISCHARGING
disappears
How long are Elec PBIT & Hyd PBIT good for? - ANSWER 50 hrs
How long does the Elec PBIT take to run? - ANSWER 3 minutes
When does the Elec PBIT run? - ANSWER Automatically when the AC power is being
used
How do you know the Elec PBIT is running? - ANSWER "FLT CTRL TEST IN PROG"
Status msg on EICAS
What causes the Elec PBIT to be interrupted? - ANSWER • Any hydraulic pump is
running
• Flight control Mode Panel switches are cycled
• The AC power is interrupted.
