Flight Instruments

Question 1

FINST_004

Explain the CADC NORM position on the CADC selector switch on aft overhead panel:

Answer 1

• CA’s MACH/AS, altimeter and VSI/TCAS indicators receive data from CADC 1.
• FO’s MACH/AS, altimeter and VSI/TCAS indicators receive data from CADC 2.

Question 2

FINST_005

Explain the BOTH ON 2 position on the CADC selector switch:

Answer 2

• CA’s and FO’s MACH/AS, altimeter and VSI/TCAS indicators receive data from CADC 2.
• FO’s BARO set knob controls both CA’s and FO’s altimeters (CA’s BARO set knob is inoperative).

Question 3

Positions and function of EFIS selector switch on aft overhead panel:

Answer 3

• NORM / BOTH ON 1 / BOTH ON 2 • Selector normally positioned to NORM, but BOTH ON 1 or BOTH ON 2 may be selected as needed in event of symbol generator failure. BOTH ON 1/BOTH ON 2: corresponding symbol generator is source for both sets of EFIs. • EFI 1/2 (amber) will be illuminated on all operable PFDs and NDs w/ BOTH ON 1 or BOTH ON selected

Question 4

FINST_009

Understand the functions of the Vertical Navigation Display on ND:

Answer 4

• Right side of NAVIGATION DISPLAY (ND) MAP Mode displays vertical deviation from selected vertical profile in MAP mode during descent only.
• Scale indicates +/- 1000 feet deviation.

Question 5

FINST_010

Understand the functions of FLT RCDR switch on overhead panel:

How is DFDR activated? How much info does it store?

Answer 5

• GND TEST (guarded) – Applies power to recorder. If recorder is operating properly, FLIGHT RECORDER OFF message will NOT be displayed.
• NORM – The digital flight data recorder (DFDR) is activated by selecting either FUEL lever to ON with the parking brake released and normal electrical power. The DFDR stores last 25 hrs of flight operations on a crash survivable magnetic tape.

Question 6

FINST_011

Explain the meaning of the FAST/SLOW indicator on final approach:

Answer 6

• F/S Display is located on left side of the Primary Flight Display (PFD).
• Indicates fast/slow indications referenced to auto throttle SPD/MACH readout (+/- 10 knots), FMS generated speed, VMO/MMO limit, slat/flap limit or safe stall margin (Alfa) speed.
• Full deflection either side of center equals approximately 10 kts.
• If selected airspeed is less than minimum safe percentage above stall for existing configuration, pointer will be centered when ALFA SPD is maintained.
• In takeoff and go-around mode, pointer will display airspeed error between computed and actual speeds (V2/V2+10 or go-around speeds KIAS)
• If autothrottles are engaged they will not allow the aircraft to slow below ALFA SPD.

Question 7

FINST_012

Locate where the expanded localizer and glideslope indications are. Understand full scale deflection on expanded localizer:

Answer 7

• The localizer (expanded) and glideslope indications are located on Primary Flight Display (PFD).
• Full scale deflection of expanded localizer indicates deviation of 1/3 dot of course deviation bar from LOC course.

Question 8

FINST_013

Understand where/how radio altitude is displayed?

Answer 8

• Radio altitude is displayed on right side of PFD
• Height Reference Index is a fixed index (tape moves) which indicates current altitude above terrain.
• Tape indicates 0 to 2500 feet.

Question 9

FINST_015

Locate the heading select cursor, heading and track indicators:

Answer 9

The heading select cursor (green = heading set by HDG knob on FGCP); Heading indicator (white = current aircraft heading) and track indicator (magenta = current aircraft track) are located on Navigation Display.

Question 10

FINST_016

Recall where is true airspeed is displayed:

Answer 10

TAS Readout located on TAS/SAT Indicator on the F/O Instrument Panel.

Question 11

FINST_017

Show where wind direction and speed displayed:

Answer 11

• The wind direction and speed are displayed on the lower left portion of the Navigation Display (ND) screen.

NOTE: Wind is displayed by a pointer and digital readout. Wind Direction and Speed can be seen on ND in rose, arc and map modes and indicate wind speed and direction w/ respect to map display orientation compass reference.

Question 12

FINST_018

Explain the heading orientation if the PLAN mode is selected on the EFIS control panel:

Answer 12

• The PLAN mode displays static map background with data oriented to north.
• In PLAN Mode, the top part of ND maintains a display of track and heading information as in Map Mode.

Question 13

FINST_019

Recall what display is associated with each of the MAP declutter buttons on EFIS mode selector panel:

Answer 13

Push to display navaids (N-AID), airports (ARPT), data (DATA) and waypoints data (WPT).