Autoflight Flashcards
AUTO_001
Explain which roll modes are affected by the Bank Angle Select Knob?
- Bank Angle Select Knob sleeve provides selection of bank limits for HDG HLD, HDG SEL, and VOR.
- AOB limiting is inhibited in LOC CAP and FMS NAV modes.
Note: During FMS NAV mode operations, AOB limit is 15° if NAV is engaged, slats are extended and the airspeed is less than the AFMC computed minimum speed.
AUTO_003
Understand when do auto throttles engage in Clamp (CLMP) Mode?
- Aircraft is on the ground for more than 20 sec with autothrottle in EPR mode and airspeed is greater than 60 KIAS.
- If IAS or MACH mode is selected while in flight with auto throttles engaged in VERT SPD, ALT HOLD, SPD SEL or MACH SEL modes.
AUTO_004
Understand that in IAS/MACH mode, the pitch changes with the movement of the throttles:
- IAS or Mach mode is engaged by pushing IAS MACH button.
- PFD displays FD commands to maintain selected Mach or indicated airspeed and AP (if engaged) will adjust pitch attitude to maintain selected speed.
AUTO_005
Recall the function of the IAS MACH Pitch Mode Select Button:
- Selects existing IAS (below 27,000feet) or Mach (above 27,000 feet and above .5 Mach) for DFGS pitch mode.
- Using pitch to control speed is indicated by an “S” (airspeed) or “M” (Mach) symbol and desired airspeed or Mach respectively.
AUTO_007
Recall that in VERT SPD and ALT HLD modes, airspeed is controlled by autothrottles which are programmed by the SPD/MACH select knob:
- The SPD SEL or MACH SEL can be engaged during any phase of flight except when TO, GA or TO FLX is selected on TRP or retard mode is engaged.
- With autothrottle in SPD SEL or MACH SEL mode, auto-throttles seek and maintain reference Speed/Mach selected in SPD/MACH window except when Alpha speed reference is higher.
AUTO_009
Explain the indications when autothrottles are disconnected:
THROTTLE Warning Light (red) flashes. Pushing autothrottle disconnect button on either throttle or re-selecting AUTO THROT switch to AUTO THROT position extinguishes light.
AUTO_010
Explain the conditions and indications when the autopilot is disconnected:
The AP is disengaged and the red AP warning light on FMA flashes in the following conditions:
- AP switch is off
- AP malfunction is detected
- DFGC switch is moved from selected position
- AUTOPILOT REL button on either control wheel is pushed
- Primary horizontal stabilizer trim is manually operated
- Activation of the stick pusher.
NOTE - In addition, flashing AP light is accompanied by aural and vocal warnings in all AP disengagements. The loss of electrical power will also disengage the autopilot, however, the warning light will not illuminate and vocal warning will not sound.
AUTO_011
Explain the meaning of ALFA SPD annunciation in the throttle window of the FMA:
- Alpha speed is a safe margin above stall speed.
- Throttles are controlled to seek and maintain Alpha speed reference indicated by the Fast/Slow display on the PFD
- ALFA SPD mode is engaged automatically when autothrottle is in SPD SEL or MACH SEL mode and selected SPD/MACH value is less than safe minimum airspeed for existing slat/flap configuration.
AUTO_012
Describe Flight Mode Annunciator (FMA) windows:
The four FMA windows are (from left to right):
- FMA Thrust Window (green) Displays existing autothrottle mode.
- FMA Arm Window (amber) Displays armed mode for roll or pitch.
- FMA Roll Window (green) Displays existing roll mode.
- FMA Pitch Window (green) Displays existing pitch mode.
AUTO_014
Explain how AUTOLAND mode of the auto flight system may be disarmed after autoland has been armed and both the localizer and glideslope are in the track mode:
Once the autoland has been armed and both the localizer and glideslope are in the track mode (LND, LOC/TRK, GS/TRK) the autoland may be disengaged by accomplishing any of the following:
- Disengage the autopilot
- Push the TOGA button(s)
- Detune the ILS frequency
AUTO_017
Explain the flight director commands given when TOGA is selected during takeoff and go around (pitch & roll)
Pitch Commands:
- During takeoff • Command bar on PFD commands pitch attitude to maintain V2+10 for 2-engine operation.
- In the event of engine failure, pitch commands for one engine operation will be as follows
- If airspeed is at or below V2 at the time of engine failure, command bar will command pitch attiude to maintain V2.
- If airspeed is between V2 and V2+10 at the time of engine failure, the command bar will command pitch att. to maintain existing airspeed.
- If airspeed is V2+10 or greater, command bar will command a pitch attitude to maintain V2+10.
- During go-around mode, the command bar commands a pitch attitude to maintain DFGC computed go-around speed (airspeed at TOGA activation, but not less than 1.3 Vs + 5 KIAS or greater than 1.3 Vs + 25 KIAS of the landing flap configuration)
Roll commands:
- During takeoff:
- After lift-off, roll command bar will command wings level to maintain heading.
- During go-around:
- Existing magnetic heading maintained and roll command bar commands wings level.
AUTO_034
Understand the FMA annunciation CLMP and when it is displayed:
CLMP (Controls Locked Manual Power):
- ATS in CLMP mode: Power is removed from ATS servo (throttles remain stationary).
- In flight: Results from selecting IAS/MACH on FGCP.
- On ground: Airplane is on the ground for more than 20 sec with autothrottle in EPR mode and airspeed greater than 60 kts
AUTO_035
Understand the FMA annunciation FMS SPD and when it is displayed:
FMS SPD – (FMS VNAV mode engaged.) Throttles being controlled by FMS to maintain speed.
AUTOP_037
Understand the FMA annunciation FMS EPR and when it is displayed:
FMS EPR – (FMS VNAV mode engaged.) Throttles being controlled by FMS to maintain EPR.
AUTO_042
Recall when the HDG select knob is fully pushed in the heading hold mode is engaged:
Pushed to Full Detent:
- Engages heading hold mode. AP/FD either maintains existing heading
- or-
- If AOB is more than 3°, rolls the airplane wings level and maintains that heading.
