10 - Flight Instruments, Displays Flashcards
What is the purpose of the Pitch Limit Indication?
When is it displayed?
stick shaker activation point for existing flight conditions
flaps not up
Data source:
Airspeed - \_\_\_\_\_\_ Altitude - \_\_\_\_\_\_ Attitude - \_\_\_\_\_\_ Heading - \_\_\_\_\_\_ Verticle Speed - \_\_\_\_\_\_
ADC ADC IRS IRS ADC (dampened by IRS)
PFD: (ADC - outter, IRS - inner)
Trend Indication indicates predicted airspeed in ___ , based on ____
ten seconds
current acceleration/deceleration rate
Current airspeed displays ____ with no computed information
30 knots
Maximum Speed indicates maximum airspeed limited by lowest of the following (3)
- Vmo/Mmo
- landing gear placard speed
- flap placard speed
Command Speed Pointer is ____ knots in height
5
Minimum Maneuvering Speed (top of amber bar) provides ___g maneuver capability
Flaps down -
Flaps up -
Above FL200 -
When is it displayed?
1.3g
- to stick shaker with flaps down
- to stick shaker or VREF+80, whichever is less*, with flaps up at or below 20,000 FT
- to low speed buffet (or as preset by maintenance), with flaps up above 20,000 FT
with first flap retraction after takeoff
1.3g maneuver capability occurs at ____ degrees of bank in level flight
40
During non-normal conditions the target speed __(may/may not)__ be below the
minimum maneuvering speed
may
Flap Maneuver Speed is the recommended operating speed ______
These speeds guarantee __________ or at least
____ of bank (_____ of bank and _____ overshoot) to stick shaker within ________
during takeoff or landing operations
full maneuver capability
40° 25° 15°
a few thousand feet of the airport altitude
Above _______ full maneuver capability is not attained until reaching ________
309,000 kgs
VREF 30 + 100 knots.
Minimum Speed (zipper) indicates ______
airspeed where stick shaker or low speed buffet occurs
Bank Pointer (LCD) _______ when bank angle is _______
fills solid amber
35 degrees or greater
Radio Altitude displays airplane radio altitude below ______
2,500 feet AGL
RADIO Minimums _______ when radio altitude is at or below mins
change color to amber and flash
Where does the ILS Approach Reference CRS appear on the PFD?
CRT - left side, below attitude
LCD - next to ILS freq/identifier, left side, above attitude
Glideslope Pointer and Scale:
Scale in view _______
Pointer in view ______ , fills in solid when ______
Scale and pointer _______ to indicate excessive glideslope deviation
frequency tuned
receiving glideslope signal
within 2 1/3 dots
turns amber and the pointer flashes
Localizer Pointer and Scale:
Scale in view ______
Pointer in view _____ , fills in solid when _____
Scale and pointer _______ to indicate excessive localizer deviation.
At low altitudes, with LNAV engaged and LOC armed, localizer scale and pointer _______ if localizer is not captured
frequency tuned
localizer signal received
within 2 1/3 dots
turns amber and the pointer flashes
turns amber and the pointer flashes
Expanded Localizer Deviation Scale displays when ________ , providing a more sensitive display.
A rectangle equals _______
close to the localizer centerline
1/2 dot deviation
Selected altitude box is highlighted in white between ___ and ____ feet prior to reaching the selected altitude
900 and 300
Altitude box changes to amber when _______
deviating from selected altitude between 300-900 feet.
Touchdown Zone Indicator - upper edge of crosshatched area indicates _______
FMC landing altitude for destination runway or airport.
(departure runway or airport until 400 NM or
one-half the distance to the destination whichever occurs first)
Vertical Speed Pointer displays numeric value when greater than ____ feet per minute
400
(Display is above the vertical speed display when climbing and below when
descending)
What does the Flight Director (FLT DIR) Source Selector actually select?
L - left FCC selected
C - center FCC selected
R - right FCC selected
Navigation (NAV) Source Selector:
FMC L/R provides information to _______
PFD and ND
Navigation (NAV) Source Selector:
CDU L/C/R provides information to _______
ND ‘during alternate navigation’
EIU (EFIS/EICAS Interface Unit) Source Selector L/C/R provides information to _______
PFD/ND
L - left EIU provides information to PFD and ND
AUTO - selects operable EIU. Captain’s selects left, then center, then right; F/O’s selects right, then center, then left
C - center EIU provides information to PFD and ND
R - right EIU provides information to PFD and ND
(determines which localizer and glideslope receivers provide information to the respective PFD and ND)
IRS Source Selector L/C/R provides _______
IRU attitude, heading* and vertical speed information to PFD
*(Source for heading, wind direction and speed, slip/skid, track angle, drift angle, and ground speed displayed on PFD and ND depends on the status of the FMCs, IRUs, and position of the Navigation and IRS source selectors)
(IRU selected by Captain provides autobrake reference)
AIR DATA Source Selector L/R provides Air Data Computer information to ________
PFD and ND
Definition:
DSP
EFIS
EICAS
EIU
Display Select Panel
Electronic Flight Instrument System, (consists of the PFD and ND)
Engine Indication and Crew Alerting System
EFIS/EICAS Interface Unit
How many EIU, and what is their purpose?
3
Receive airplane systems information and supply it to the flight crew on six display units. The units display three primary groups of information:
• primary flight display (PFD)
• navigation display (ND)
• engine indication and crew alerting system (EICAS)
The pitot static system provides pitot pressure and static pressure to _______ (4)
air data computers
standby airspeed indicator
standby altimeter
elevator feel computer
What does the Air Data Computer (ADC) System do?
There are ___ ADCs
Each ADC receives inputs from _____ (4)
supplies air data information to various airplane systems
2, (left and right, either ADC can provide flight information to the CA’s and FO’s flight instruments)
AOA sensors, TAT probes, pitot static system, and barometric settings
Left and right dual total air temperature probes sense _______
Where is the TAT displayed?
What is the difference between TAT and OAT on the ground?
outside air temperature (OAT) and heat of compression
upper left primary EICAS
approximately the same
(TAT probe must be aspirated by bleed air
to provide accurate information)
Where is Static Air Temperature (SAT) displayed?
PROG page 2/3
Airspeed box changes to amber if _____
current airspeed less than minimum
maneuvering speed
