MCP PANEL Flashcards
1
Q
COURSE DISPLAY & SELECTOR
- Lateral -
A
Display.
- displays course set by selector
- Note - if you have different courses and freq on 2 VHF nav recievers it can cause diagreement between CAPT & FO F/D’s - affecting AP ops.
Selector.
- sets course in the display for the related Nav receiver, AFDS and DU
-
Capt’s:
- FCC A
- # 1 VHF nav
- capts course pointer and deviation bar
-
FO:
- FCC B
- # 2 VHF Nav
- FO course pointer and deviation bar
Notes.
- in VOR/LOC or APP modes AP ‘A’ and Capt F/D use crs/nav data from #1 VHF Nav and the AP ‘B’ and FO’s F/D use crs/nav data from #2 VHF nav.
2
Q
MASTER FLT DIR Light
A
Master F/D Light (White)
- if a FD is ON - the light indicates which FCC is controlling the FD modes
Illuminated: related FCC is controlling FD (ie MASTER FCC)
Extinguished: FD modes are controlled by opposite FCC
Both Illuminated: each FCC is controlling modes for related FD (indicates INDEPENDENT FD operations)
General.
- with both ON - the logic for both is controlled by the MASTER FCC and both FMAs display show the same mode status
-
Master FCC is determined by:
- if neither AP is has CMD selected - Master is first FD turned ON
- with one or more in CMD - Master is the first one to select CMD regardless of which FD switch was turned on first
- Important to know which FCC is in command:
- in VOR/LOC, the MA will tell you which nav receiver the FCC is tracking
- left FCC uses Capt ALT and baro the right vice versa
3
Q
FLIGHT DIRECTOR Switch
A
General.
- left switch ON = Capt command bars
- right switch ON = FO command bars
- can use one at a time or both together
- can use with or without AP or AT
Switch ‘ON’.
- Flight
- if selected with the AP ON - it engages FD into current AP mode
- show ‘FD’ in the AP status display (if AP off or in CWS)
- shows command bars on related side (if CMD pitch/roll are engaged - will not show if CMD pitch/roll are NOT engaged)
- Ground -
- arms pitch and roll modes (TOGA) and HDG SEL (TOGA pushed)
Switch ‘OFF’.
- command bars retract from view
4
Q
AT ARM Switch
A
Switch OFF.
- disengages AT and prevents AT engagement
Switch ARM. (green light)
- arms AT for engagement (magnetically)
- AT engages automatically when the following modes are engaged:
- TOGA (the GA mode is armed when descending below 2000’ RA)
- LVL CHG
- VS
- VNAV
- ALT HOLD
- ALT ACQ
- GS capture
AT Disengagement.
- will cause AT switch relase to ‘OFF’ and flashing RED AT disengage light
- switch to OFF
- AT disengage switch (on throttles)
- fault
- 2 seconds after touchdown
5
Q
N1 Switch and Mode
A
N1 SWITCH
Push (with light NOT illuminated).
- AT goes to N1 mode (if compatable with AFDS modes)
- Illuminates N1 switch
- N1 annunciation in autothrottle mode
Push (with light already illuminated).
- deselects N1 (light goes out)
- AT goes to ARM mode
N1 Mode.
- AT maintains thrust at the N1 limit selected from the FMC CDU
- Mode engaged manually or automatically
-
Manual:
- push N1 switch (as long as compatible with AFDS mode)
-
Automatically:
- LVL CHG in Climb (except w/in 2.5 min after lift off - inhibited)
- VNAV climb
6
Q
SPEED Switch and Mode
A
SPEED SWITCH.
Push (when light is NOT illuminated).
- AT engages SPEED mode (if compatible with AFDS modes)
- illuminates switch
- [MCP SPD] displayed in AT mode
- maintains speed selected in MCP speed display
Push (when light is already illuminated).
- deselects SPEED mode (light out)
- sets AT back to [ARM] mode
SPEED MODE.
- in speed mode - AT holds whats in speed display (or a performance or limit speed)
- engaged manually or automatically
-
Manually:
- push the SPEED button (if compatible with AFDS modes)
-
Automatically:
- V/S engages
- ALT ACQ
- ALT HOLD
- G/S capture occurs
- AT will not set thrust ABOVE displayed N1 limit
- AT CAN exceed N1 value MANUALLY set by N1 Man Set Knob
7
Q
IAS/MACH Display and Selector
A
Display.
- displays speed selected by selector
- the speed window closes when:
- VNAV
- AT in FMC SPD mode
- during 2 engine AFDS go-around
- displays 100 kts (when power is first applied)
- Range
- 100 - Vmo (1 kt increments)
- .60 M - Mmo (.01 M increments)
-
MCP Speed Condition Symbols
- Overspeed or underspeed shown when commanded speed cant be reached
- Underspeed Limiting (flashing A) - minimum speed
-
Overspeed Limiting (flashing 8) -
- Vmo or Mmo
- gear or flap limit
Selector.
- rotate to select speed in display and positions airspeed cursor
- this speed is the reference speed for the AFDS and AT
- this selector is INOP when window is closed
8
Q
C/O Switch & SPD INTV Switch
A
C/O Switch.
- Push - changes display between IAS and MACH
- automatically changes at approx FL260
SPD INTV Switch.
- Push (when VNAV is engaged).
- display shows selected speed then blanks
- when window is open FMC speed intervention active
- FMC target speed is shown and now you can use the speed selector to set desire speed
- when window is closed - FMC target speed is active and shown on the airspeed indicator.
9
Q
VNAV Switch and Mode
A
VNAV Switch.
- Push -
- switch illuminates
-
Pitch Mode:
- VNAV SPD - or -
- VNAV PTH
-
AT Mode:
- FMC SPD
- N1
- RETARD
- ARM
- Speed window closes (airspeed cursor to FMC target speed)
VNAV Mode.
- FMC commands AFDS (pitch) and AT (vertical profile)
-
CLIMB -
- AT holds FMC thrust limit (AT Mode)
- AFDS hold FMC target speed (Pitch Mode)
- Level Off - automatic at either MCP alt or VNAV alt (whichever first)
- VNAV PTH (VNAV constrained Alt)
-
CRUISE -
- AT holds FMC target speed (AT Mode)
- AFDS holds FMC altitude (Pitch Mode)
- if you select a lower MCP altitude - it arms the FMC to automatcially begin descent at FMC TOD point
-
DESCENT -
-
VNAV SPD
- AT hold IDLE (AT mode)
- AFDS holds FMC target speed (Pitch)
-
VNAV PTH
- AT holds IDLE (but can command FMC SPD mode if ground speed to low for FMC vertical path)
- AFDS tracks FMC descent path
-
Level Off - MCP or VNAV alt (whichever first)
- VNAV contrained alt annunciates VNAV PTH
-
VNAV SPD
- VNAV mode is inhibited below 400’ RA or if performance initialization not complete
-
VNAV MODE TERMINATED WHEN.
- another pitch mode selected
- G/S capture or transition of GS intercept waypoint if GS armed (can be re-engaged for the waypoint)
- end of LNAV route
- xtrk deviation > 2x RNP value during PTH descent (active leg) that has a database vertical angle and LNAV NOT engaged.
Notes.
- when pitch mode changes from VNAV SPD to ALT ACQ (intermediate level off) the AT will target an IAS (not Mach # - even at alt > C/O alt). If climb is resumed (LVL CHG or V/S) the airspeed window opens at the target IAS which may result in an overspeed.
10
Q
LVL CHG Switch and Mode
A
LVL CHG Switch.
- Push -
- light illuminates
-
AT mode: (window and cursor display tgt speed)
-
Climb:
- N1
-
Descent:
- Retard (then ARM)
-
Climb:
-
Pitch Mode:
- MCP SPD (for both climb and descent)
LVL CHG Mode.
- coordinates Pitch and Thrust commands
- inhibited after G/S capture
- Climbs and Descents are initiated by:
- select new altitude
- push LVL CHG
- set desired airspeed
- Climb.
- AT holds limit thrust
- AFDS holds selected airspeed
- Descent.
- AT hold IDLE
- AFDS holds selected airspeed
Airspeed Considerations.
- if a speed mode is active when LVL CHG is engaged - this speed is retained as the target speed
- if speed mode is NOT active the existing speed BECOMES the target speed
- speed can be changed with the selector
11
Q
HDG Selector / Display / Bank Angle / Switch
A
Display.
- displays selected heading
Selector.
- Rotate - sets HDG in display and positions bugs on the DU’s
Bank Angle Selector.
- Rotate -
- sets max bank angle for AFDS (HDG SEL or VOR modes only)
- angles - 10 / 15 / 20 / 25 / 30 degrees available
HDG SEL Switch.
-
Push -
- engages HDG SEL command mode (roll to follow selected hdg)
- FMA Mode: shows HDG SEL (lateral mode) and illuminates switch
HDG SEL Mode.
- first selection of this commands airplane to turn in shortest direction to bug
- on all subsequent selections - airplane turns in same direction as rotation of the knob
-
Disengagement:
- automatic after capturing a selected course in either VOR/LOC or APPR modes (ie with VOR/LOC armed)
12
Q
LNAV Switch and Mode
A
LNAV Switch.
- Push -
- commands AFDS roll to intercept and track active FMC route
- LNAV in FMA lateral mode (switch light comes on)
LNAV Mode.
- FMC controls roll to intercept and track active route
- Arming Criteria:
-
Ground
- departure rwy in the flt plan
- active route in FMC
- first leg - w/in 5 degrees or rwy hdg
- LNAV selected prior to TOGA
- guidance begins at 50’ agl
-
Ground
-
Inflight (engagement)
- active route in FMC
- if you are w/in 3 miles of the active route - LNAV will engage on any hdg
- if you are beyond 3 miles of the active route you must be on an intercept course (90 deg or less) and you need to intercept the route segment BEFORE the active waypoint
LNAV Disconnect. (automatically)
- end of active route
- route discontinutiy
- intercepting a selected approach course (VOR/LOC or APP mode i.e. arm)
- manually selecting HDG SEL
- loss of capture criteria
13
Q
VOR/LOC Switch and Mode
A
VOR/LOC Switch.
- Push -
- AFDS roll to capture and track selected VOR or LOC course
- switch light illuminates and you see VOR/LOC in white armed mode on the FMA
VOR/LOC Mode.
- pushing switch sets either VOR or LOC depending on the freq input
- LOC mode tracks INBD FRONT CRS bearing
- intercepting the selected course can be in any of these modes.
- LNAV
- HDG SEL
- CWS R (if an AP is engaged in CMD)
- capture point depends on intercept angle and closure rate
- LOC capture occurs NLT @ 1/2 dot
- When VOR or LOC modes are engaged:
- AP ‘A’ and Capts FD use info from Capt course selector and NAV 1
- AP ‘B’ and FO’s FD use info FOs course selector and NAV 2
- Note - if you have 2 different freq (or courses) for 2 different radios, it can cause disagreement between Capt & FO’s FD displays and can affect AP operation
- LOC BC tracking is NOT available
14
Q
APP Switch and Mode
A
APP Switch.
-
Push -
- illuminates switch
- ARMS the AFDS for localizer and GS capture
- Roll Mode: VOR/LOC armed
- Pitch Mode: G/S armed
- enables engagement of BOTH autopilots
APP Mode.
- can be engaged for dual or single autopilot operation
- one NAV receiver must be tune to an ILS before APP mode can be engaged
- with 1 receiver tuned the ONSIDE AFDS is enabled for guidance and operation
-
DUAL AP Mode:
- both NAV radios must be tuned to an ILS - and -
- both AP’s must be in CMD BEFORE 800’ RA
App Mode Operation.
- localizer MUST be captured before GS
- LOC can be intercepted in HDG SEL, LNAV or CWS R
-
[SINGLE CH] annunciated in AP status display after localizer capture
- if you choose to do single AP - it will remain
- For a Dual AP approach - SINGLE CH extinguishes when:
- 2nd AP engages
- [FLARE ARMED] is annunciated
- GS capture at 2/5 dots BELOW
- APP switch light extinguishes AFTER LOC/GS capture
Disengagement of APP mode. (After LOC/GS capture)
- push TOGA
- disengage AP and turning off both FD
- retune NAV receiver
General.
- AP ‘A’ and Capts FD use info from Capt course selector and NAV 1
- AP ‘B’ and FO’s FD use info FOs course selector and NAV 2
- Note - if you have 2 different freq (or courses) for 2 different radios, it can cause disagreement between Capt & FO’s FD displays and can affect AP operation
- Note - During a DUAL AP approach and after FLARE ARM, any attempted manual override of the AP will disconnect the AP
15
Q
ALTITUDE DISPLAY and SELECTOR
A
Altitude Display.
- displays selected altitude
- displayed alt is reference for ALT ALERTING and auto leve-offs
- displays previously selected ALT when power first applied
Altitude Selector.
- Rotate -
- sets altitude in display
- arms V/S mode (if in ALT HOLD at selected altitude)
