B747-400ERF DIFFERENCES EXAM QUESTIONS WITH VERIFIED
ANSWERS LATEST UPDATE
How would you reset a zone duct overheat or ZTC fault?
Zone reset switch
What is the purpose of the Master Trim Air Valve and when does it close?
Main deck and upper deck hot air supply. Closes when cargo fire switch is armed, zone
overheat or selected off.
Describe the lower lobe cargo condition air flow control.
ON/OFF switch position and then temp selectors determine air flow. Physical switch
position shows trim air valve position.
List the autopilot engage/disengage limitations.
Engage - 250FT AGL Disengage - 100FT AGL
During a go-around how can TO/GA mode be terminated?
Manually select different mode above 400FT RA
What selection arms the localizer and glideslope modes?
APP
Describe the voice/data selections on the RTP.
No data switch, need to dial it out of range.
Describe the control and indication of Air Traffic Services Datalink (ATS DL).
Control through CDU.
ATC memo msg (EICAS). No
, List the EICAS Communication Memo messages.
ACARS
ATC DATALINK
SATCOM CALL/MSGS
Describe the Standby EFIS selector operation.
Not functional during normal electrical operation or when captain transfer bus is not
powered.
What is the discharge sequence of the lower lobe cargo compartment fire
extinguishing system?
Bottles A&B immediately. Bottles C&D 30 mins later for 210 mins protections.
What is tested when the FIRE/OVHT switch is held down?
Fire detection system and valves.
Describe the horizontal stabilizer trim controls and indications.
Stab Cut Out Switches. Alternate Trim.
Trim indicators on control stand
Identify what EICAS page is used for the flight control check.
Status page
What prevents over controlling of roll at high airspeeds?
Outboard aileron lockout mechanically above 238kts.
What is the purpose of the spoiler mixer?
Controls which spoiler deploy for roll in air and ground. Mixes speedbrake lever and
aileron control
Describe flap load relief protection.
ANSWERS LATEST UPDATE
How would you reset a zone duct overheat or ZTC fault?
Zone reset switch
What is the purpose of the Master Trim Air Valve and when does it close?
Main deck and upper deck hot air supply. Closes when cargo fire switch is armed, zone
overheat or selected off.
Describe the lower lobe cargo condition air flow control.
ON/OFF switch position and then temp selectors determine air flow. Physical switch
position shows trim air valve position.
List the autopilot engage/disengage limitations.
Engage - 250FT AGL Disengage - 100FT AGL
During a go-around how can TO/GA mode be terminated?
Manually select different mode above 400FT RA
What selection arms the localizer and glideslope modes?
APP
Describe the voice/data selections on the RTP.
No data switch, need to dial it out of range.
Describe the control and indication of Air Traffic Services Datalink (ATS DL).
Control through CDU.
ATC memo msg (EICAS). No
, List the EICAS Communication Memo messages.
ACARS
ATC DATALINK
SATCOM CALL/MSGS
Describe the Standby EFIS selector operation.
Not functional during normal electrical operation or when captain transfer bus is not
powered.
What is the discharge sequence of the lower lobe cargo compartment fire
extinguishing system?
Bottles A&B immediately. Bottles C&D 30 mins later for 210 mins protections.
What is tested when the FIRE/OVHT switch is held down?
Fire detection system and valves.
Describe the horizontal stabilizer trim controls and indications.
Stab Cut Out Switches. Alternate Trim.
Trim indicators on control stand
Identify what EICAS page is used for the flight control check.
Status page
What prevents over controlling of roll at high airspeeds?
Outboard aileron lockout mechanically above 238kts.
What is the purpose of the spoiler mixer?
Controls which spoiler deploy for roll in air and ground. Mixes speedbrake lever and
aileron control
Describe flap load relief protection.
