Md88/90 Automatic Flight

Front 1

Explain which roll modes are affected by the Bank Angle Select Knob:

Back 1

*Bank Angle Select Knob sleeve provides selection of bank limits for HDG HLD, HDG SEL, and VOR.
*Bank angle limiting is inhibited during LOC CAP and FMS NAV modes.

NOTE: During FMS NAV mode operations, the bank limit is 15 degrees if NAV is engaged, the slats are extended, and the airspeed is less than an AFMC computed minimum speed.

Front 2

Understand when the auto throttles engage in CLAMP (CLMP) MODE:

Back 2

*The airplane is on the ground for more than 20 seconds with autothrottle in EPR mode and airspeed greater than 60 KIAS.
*In flight, the autothrottle is in SPD SEL or MACH SEL mode and IAS or MACH mode is selected.

Front 3

Understand that in the IAS/MACH mode the pitch changes with the movement of the throttles:

Back 3

*IAS or Mach mode is engaged by pushing the IAS MACH button.
*The PFD displays FD commands to maintain selected Mach or indicated airspeed and AP (if engaged) will adjust pitch attitude to maintain selected speed.

Front 4

Recall the function of the IAS MACH Pitch Mode Select Button:

Back 4

*Selects existing Indicated Airspeed (below 27,000 feet) 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 the desired airspeed or mach respectively.

Front 5

Recall that in VERT SPD and ALT HLD modes, airspeed is controlled by autothrottles which are programmed by the SPD/MACH select knob:

Back 5

*The SPD SEL or MACH SEL mode can be engaged during any phase of flight except when TO, GA or TA FLX is selected on the TRP or retard mode is engaged.
*When autothrottle in SPD SEL or MACH SEL mode, the autothrottle seeks and maintains reference Speed/Mach selected in the SPD/MACH window except when the Alpha speed reference is a higher value.

Front 6

Explain the indications when the autothrottles are disconnected:

Back 6

THROTTLE Warning Light (red) flashes when the autothrottle is disengaged. Pushing autothrottle disconnect button on either throttle or re-selecting AUTO THROT switch to AUTO THROT position extinguishes light.

Front 7

Explain the conditions and indications when the autopilot is disconnected:

Back 7

The AP is disengaged and the red AP warning light on the 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, the 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 the vocal warnings will not sound.

Front 8

Explain the meaning of the ALFA SPD annunciation in the throttle window of the FMA:

Back 8

*ATS in ALFA speed mode. Throttles controlled to maintain a safe margin above stall speed.
*ALFA SPD mode is engaged automatically when the autothrottle is in SPD SEL or MACH SEL mode and the selected SPD/MACH value is less than the safe minimum airspeed for the existing slat/flap configuration.

Front 9

Describe Flight Mode Annunciator (FMA) windows:

Back 9

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.

Front 10

Recall the purpose of the Mach trim compensator:

Back 10

*Mach trim compensation provides nose-up trim to compensate for the normal pitch down (tuck) characteristic encountered at high Mach operation.
*This function is controlled by the MACH TRIM COMP switch located on the overhead panel.
*With the switch in NORM, the mach trim compensator positions the First Officer's control column aft at speeds greater than .80 mach.
*With the switch in OVRD, the system is deactivated.

Front 11

Explain how the 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:

Back 11

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

Front 12

Explain the flight director commands given when TOGA is selected during takeoff and go around (pitch and roll):

Back 12

PITCH COMMANDS
*During takeoff, the command bar on the PFD commands a pitch attitude to maintain V2+10 KIAS for two-engine operation.
*In the event of an engine failure, pitch commands for one engine operation will be as follows:
*If the airspeed is at or below V2 KIAS at the time of engine failure, the command bar will command a pitch attitude to maintain V2 KIAS.
*If the airspeed is between V2 and V2+10 KIAS at the time of engine failure, the command bar will command a pitch attitude to maintain V2+10KIAS.
*During go-around, the command bar commands a pitch attitude to maintain DFGC computed go-around speed (airspeed at TOGA switch 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 wing level.

Front 13

Understand the FMA annunciation CLMP and when it is displayed:

Back 13

*CLMP (Controls Locked Manual Power): ATS is CLMP mode. Power is removed from ATS servo (throttles remain stationary).
*In flight: Results from selecting IAS/MACH on the FGCP.
*On ground: Airplane is on the ground for more than 20 seconds with autothrottle in EPR mode and airspeed greater than 60 KIAS.

Front 14

Understand the FMA annunciation FMS SPD and when it is displayed:

Back 14

FMS SPD - (FMS VNAV mode engaged) Throttles being controlled by FMS to maintain speed.

Front 15

Understand the FMA annunciation FMS EPR and when it is displayed:

Back 15

FMS EPR - (FMS VNAV mode engaged) Throttles being controlled by FMS to maintain EPR.

Front 16

Recall when the HDG select knob is fully pushed in the heading hold mode is engaged:

Back 16

Pushed to Full Detent: Engages heading hold mode. With this mode engaged, the AP/FD either maintains the existing heading or, if the bank angle is more than 3 degrees, rolls the airplane wings level and maintain that heading.

Front 17

Recall when the HDG select knob is pushed to the first detent only fast rate of heading select is provided.

Back 17

Pushed to First Detent - Provides fast rate of heading adjustment.

Front 18

Recall that adjusting vertical speed after altitude capture will disengage the altitude capture mode and revert it back to vertical speed mode:

Back 18

In ALT CAP, ALT HLD, OR VNAV modes, vertical speed rate adjustments after altitude capture will disengage the altitude capture mode, and pitch control will revert to the vertical speed mode.

Front 19

Understand when the SPD SEL (Speed Select) Mode can be engaged:

Back 19

The SPD SEL or MACH SEL mode can be engaged during any phase of flight except when TO, GA, or TO FLX is selected on the TRP or retard mode is engaged.

Front 20

Understand when the autopilot/flight director will revert to vertical speed when engaged in the SPD SEL (Speed Select) mode:

Back 20

If the autothrottle is engaged in SPD SEL or MACH SEL mode after the autopilot/FD was engaged in either IAS or MACH mode, the AP/FD will revert to the vertical speed mode at the existing vertical speed and the VERT SPD annunciation will flash for 5 seconds on the FMA.

NOTE: The Pitch Profile Readout/Window on the FGCP will display/capture the existing vertical speed when the SPD SEL is pressed.