Term
| Describe the elevator feel system |
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Definition
Provides artificial feel at control columns
Force increases as airspeed increases |
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Term
| How is elevator feel effected with a loss of HYD 2 and 3? |
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Definition
Mechanical springs provide feel force
Feel force is no longer a function of airspeed |
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Term
| What can you do if you lose elevator control due to a jam? |
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Definition
| When significant manual force is applied to the control column, shear outs between the inboard and outboard elevators allow elevator control to be regained |
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Term
| Which elevator panels are displayed on the position indicator? Which move with control column inputs? |
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Definition
Indicator: left and right outboard
Control column: left and right inboard |
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Term
| How is stabilizer trim greenband calculated? |
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Definition
| CG, gross weight and takeoff thrust inputs entered into the FMC |
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Term
| How does the aircraft provide a crosscheck to ensure the correct greenband has been selected? |
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Definition
| A nose gear oleo pressure switch position is compared to the selected greenband |
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Term
| What happens when control wheel trim is used with an autopilot engaged? All 3 autopilots? |
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Definition
Single - autopilot disengages and stabilizer trim moves
Multiple - control wheel trim switches are inhibited |
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Term
| What happens when alternate trim switches are used with any number of autopilots engaged? |
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Definition
Alternate trim switches override autopilot trim
Autopilot does not disengage |
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Term
| Describe the function of the alternate trim switches |
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Definition
| They provide trim commands through a separate electric channel |
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Term
| Describe the function of the Stabilizer Trim Cutout switches, AUTO position |
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Definition
| Automatic cutout of respective hydraulic system if uncontrolled stab trim is detected |
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Term
| Describe the function of the Stabilizer Trim Cutout Switches, ON position |
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Definition
Automatic cutout is overridden
STAB TRIM UNSCHD caution msg will still display |
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Term
| What occurs when a Stabilizer Trim CUTOUT switch is in CUTOUT? |
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Definition
Shuts off related hydraulic power to stabilizer trim
Stab trim is at half the normal rate |
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Term
| Which spoilers provide roll control? |
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Definition
| 5 outboard panels on each wing |
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Term
| Which spoilers function as speedbrakes in flight? How much travel? |
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Definition
4 inboard panels on each wing
- 2 inboard spoilers extend to mid‐travel
- 2 middle spoilers extend to full travel |
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Term
| Which spoilers function as ground spoilers? |
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Definition
| All 6 spoiler panels on each wing |
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Term
| Which spoilers are displayed on the EICAS status display? |
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Definition
#4 and #12
Speedbrake position on left wing only |
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Term
| When do the spoilers extend during landing, if the speedbrake lever is ARMED? |
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Definition
Thrust levers 1 and 3 near closed
Main landing gear on ground |
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Term
| When do the spoilers extend during landing if the speedbrake lever is NOT Armed? |
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Definition
Thrust levers 1 and 3 near closed
Reverse thrust levers 2 or 4 in idle
Main landing gear on ground |
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Term
| What action provides automatic spoiler function during an RTO? |
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Definition
Thrust levers 1 and 3 near closed
Reverse thrust levers 2 or 4 in idle
Main landing gear on ground |
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Term
| For go-around protection, what action drives the speedbrake lever to the DN position? |
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Definition
| Thrust lever 1 or 3 advanced from the closed position, regardless of whether ground spoilers were automatically or mechanically selected |
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Term
| SPEEDBRAKE EXT caution msg |
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Definition
RA between 800' and 15'
Flaps in landing configuration
2 or more thrust levers fwd of closed position |
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Term
| How does the aileron lockout system work? Why? |
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Definition
Locks the outboard ailerons in a neutral position at high airspeeds
Prevents over‐controlling at high airspeeds
Provides the required roll authority at low airspeeds |
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Term
| What would happen if you use aileron trim with the autopilot engaged? |
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Definition
The aileron neutral point is repositioned
When the autopilot is disengaged, the wheel and ailerons move to the repositioned aileron neutral point
The airplane responds with roll proportional to the amount of aileron trim input |
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Term
| How do the rudder ratio changers work? |
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Definition
| Reduce rudder response to pedal inputs as airspeed increases |
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Term
| What happens if a Rudder Ratio failure occurs? |
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Definition
| Rudder response remains the same as when the failure occurred regardless of airspeed |
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Term
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Definition
Yam Damper fault
During IRS alignment
All 3 IRSs are inop |
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Term
| How many Flap Control Units (FCUs) are provided? |
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Definition
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Term
| What are the basic functions of the FCUs? |
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Definition
Primary control
Secondary control
Indication and annunciation |
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Term
| Describe the function of the FCUs in secondary mode. |
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Definition
If any flap group fails to move to the commanded position, the FCUs switch to secondary mode for the related group.
The flap group is driven through electric motors. |
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Term
| What protection features do FCUs provide for trailing edge flaps in primary mode? |
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Definition
Asymmetry protection
Flap load relief |
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Term
| What protection features do the FCUs provide for trailing edge flaps in secondary mode? |
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Definition
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Term
| Describe each flap group and how each is powered |
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Definition
LEF - pneumatically powered outboard, midspan, and inboard sections
TEF - inboard powered by HYD SYS 1, outboard by HYD SYS 4 |
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Term
| Describe flap extension from 1-5 degrees |
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Definition
0-1 Inboard and midspan leading edge flaps extend
1-5 Outboard leading edge flaps extend and all trailing edge flaps extend to 5 |
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Term
| What happens if a primary control failure occurs in either the inboard or midspan leading edge flap group? Any other group? |
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Definition
Both groups switch to secondary mode
All other flap groups - only the failed group operates in secondary mode |
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Term
| What happens if a failure occurs in a leading edge flap group on only one wing? |
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Definition
Both wings change to secondary mode after a time delay of 20 to 45 seconds
The non-affected side extends before changing modes due to primary mode flap extension rate |
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Term
| When do the flaps return to primary mode after extending in secondary mode? |
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Definition
Trailing edge - once hydraulic pressure is restored or after extension if hydraulic pressure was available
Leading edge - after extension |
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Term
| What happens if a trailing edge asymmetry is detected? |
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Definition
Primary mode is immediately shut down for the asymmetric group
The FCUs do not use secondary mode
Do not use alternate mode |
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Term
| How does the alternate flap mode work? |
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Definition
Bypasses the FCUs
All flaps are extended or retracted by electric motors |
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Term
| Which protections are lost while in alternate mode? |
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Definition
| Load relief and assymetry |
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Term
| What occurs when the Alternate (ALTN) Flaps Arm switch is pushed? |
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Definition
Arms flap alternate control mode
Arms alternate flaps selector
Shuts off primary and secondary modes
Flap lever inoperative |
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Term
| How is flap sequencing different during alternate extension? |
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Definition
All LEF and TEF groups extend immediately
TEF extend to a maximum of 25
During retraction, LEF retract after inboard TEF are completely retracted |
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Term
| How does the flap indicator differ with each mode? |
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Definition
Primary - single tape
Secondary - expanded
Alternate - expanded with tick marks |
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Term
| Describe the flap position indication on EICAS if the standby bus is the only powered AC bus. |
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Definition
Left wing TEF sensors are not powered
Amber X on left outboard and inboard TEF indications
Expanded indication is displayed |
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Term
| What does an amber X mean on an expanded flap display? |
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Definition
| Related flap sensor (and display) inoperative |
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Term
| Describe flap load relief |
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Definition
If airspeed limit is exceeded:
Flaps 30 retracts to 25, and flaps 25 retracts to 20 |
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Term
| What is the affect on the flap system during engine reverse thrust operation? |
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Definition
| Inboard and midspan leading edge flaps retract automatically |
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Term
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Definition
Alternate mode is selected or
All 3 FCUs have failed |
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Term
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Definition
| One or more flap groups are operating in secondary mode |
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Term
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Definition
One of more flap groups have failed to drive in secondary mode or
Asymmetry is detected |
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