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57 Cards in this Set
- Front
- Back
What type of gear do we have
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Retractable tricycle type
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How do the gear doors close
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They are mechanical
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Which doors only close half way
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Main gear doors
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What holds the over center locks in place on each gear
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2 large springs
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A red light on the towing indicator indicates
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Towing not allowed.Steering engaged
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A green light on the towing indicator indicates
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Towing allowed. Steering disengaged
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What does the electrical over ride switch do on the emergency gear handle
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By passes the proximity sensor module
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What does raising the emergency gear handle do
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Releases the up locks and relieves hydraulic pressure activating the free fall selector valve allowing the gear to fall by gravity
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What is the function of the down lock release button
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By passes the WOW sensor switch to raise the gear
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When will you get an aural gear warning
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1.Any gear not down and locked and RA is less than 1200' AGL and
-Thrust lever <45 on 2 eng -Thrust lever <59 on SE OR Anytime flap lever is extended to flaps 5 or full and gear is not down and locked |
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What is the function of the LNDG gear inhibit
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Used when the RA has failed and you are below 1200' AGL.
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When will the lndg gear inhibit reset itself
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Thrust lever advancement flaps are 5 or full
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How do the brakes work
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They are brake by wire-electronic imput based on pedal pressure
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What brakes does HYD system 1 control
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Outboard
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What brakes does hyd system 2 control
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Inboard
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How do the wheels stop spinning on takeoff
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Automatic wheel braking
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What is locked wheel protection
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Reduces wheel speed if a pair of wheels either inboard or outboard is above 30 knots and one wheel pair turns at less than 33% of its partners speed
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When is the antiskid disabled
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Below 10 knots
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What is touchdown protection
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Prevents landing with the brakes on by inhibiting the pressure command put on the brake pedal
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When is touchdown protection disabled
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3 seconds after WOW
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What is the spin up override function
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Allows braking when wheel speed are above 50 knots
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Does the emergency parking brake have antiskid protection
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No
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What does it mean when the emergency parking brake light is on
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There is still pressure in the line, but not necessariliy that the emergency brake is in the up position
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How many brake wear indicators per main wheel
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8
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What is the max steering tiller angle before it would auto disconnect
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76 degrees
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A steering tiller angle of 76 degrees is valid up to what speed
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40 knots
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When the steering is disengaged the system defaults to what
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Free caster mode
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Tiller steering angle above 40 degrees is reduce to what
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Decreasing from 76 degrees at 40 knots to 7 degrees at 100 knots
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How many WOW proximity switches per gear
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2
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What do the WOW proximity switches provide input too
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PSEM
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Besides WOW proximity switches what are a few other kinds
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Squat switch, gear up,gear down
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What holds the main gear up
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Uplocks
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What does the drag brace do on the gear
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Holds the gear in position when the drag brace goes past the over center lock it will lock into place
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What is antiskid protection
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Reduces the pressure command to any wheel by compairing wheel speed signals from each wheel.
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What is max angle on the parking brake
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60 degrees
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During a total hydraulic failure will the emergency parking brake still be available
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Yes, through the emergency parking brake valve using pressure in the accumulator
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What temperature range will bring on the amber brake temps
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252-840 degrees
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How long would you expect to wait after lowering the gear handle to see a RED icon indicating a discrepency between a gear position and the landing gear lever position
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20 seconds
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Can you monitor the brake temperature and pressure
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MFD status page
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Do we have wheel snubbers to stop tire rotation after gear retraction
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No, automatic wheel braking occurs on retraction
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After using the alternate gear extension can you restore normal gear operation
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Yes, as long as the alternate gear extension handle is stowed
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We have only two brake conrol modules, which one controlS which brakes
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BCM1=Outboard brakes
BCM 2=Inboard brakes |
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Does hand wheel steering work on the take off roll
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Yes as long as its engaged
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What is the maximum nose wheel steering using the rudder pedals
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7 degrees
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What does the LG WRN INHIB button do
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The button inhibits the Landing Gear Warning in the
event of a Radio Altimeter Failure. |
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What would cause this inhibit to automatically reset
allowing the warning to sound when Landing Gear is not down? |
Flaps set to 5 or FULL with Landing Gear Not Down and
TLA over 45 degrees with two engines working or TLA over 59 degrees with one engine working |
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How long would you expect to have to wait after lowering
the gear handle to see a RED icon indicating a discrepancy between a gear position and the Landing Gear Lever position? |
20 seconds after the discrepancy is detected.
In the meantime, the amber in-transit hatched icon will be illuminated. |
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Is there any light or indication that would tell us the
emergency parking brake is actuated? |
Yes, a white striped bar illuminates in the EMERG/PRKG
BRAKE light located on the instrument panel |
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How can you disengage nosewheel steering
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Press the momentary action disengage button on the
control wheel, or Raise the ground crew guarded switch |
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How does the ground crew know that the nosewheel is
disengaged and towing is allowed? |
There is a GREEN towing permissible light on the
nosewheel. The RED towing light is the “not permissible light” and will illuminate when the nosewheel steering is not disengaged |
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How many sensors are there for each gear
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Two Uplock sensors per gear
Two Downlock sensors per gear |
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After using the alternate gear extension system can you
restore normal gear operation |
Yes, by placing the alt gear lever back in its initial
position |
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The ERJ-170 has only two Brake Control Modules
(BCM). Which one controls which brakes |
BCM 1 controls Outboard Brakes (DC ESS BUS 1)
BCM 2 controls Inboard Brakes (DC ESS BUS 2) |
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When will the Landing Gear Aural Warning activate
when gear is not down? |
Below 1,200 feet AGL and
Flaps in any position and TLA below 450 (2 engines operating) or TLA below 590 (1 engine operating) Or Anytime the flaps are 5 or FULL |
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Does handwheel steering work on the T/O roll
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Yes, but control authority is decreased as a function
of speed. Up to 76 degrees to either side until 40 knots and then decreases to 7 degrees at 100 knots |
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Question Answer
What is the maximum nosewheel steering angle using the rudder pedals? |
+/-7 degrees maximum steering angle using rudder pedals
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Is there ever a time when freewheel steering is
automatically selected? |
Yes, when steering angle is more than 76 degrees, or
Failure of the WOW sensor is detected, or Steering System failure is detected |