REMAINS MCHENG UNTIL EXITCONFIGURATION IS COMPLETEGO-AROUND TRACKHOLD GROUNDCONTROLS TO CONTROLS FORSAFE CLIMB RATEUSING SPEED/FLAPS REF CONTROLS TOHOLD GROUNDTRACK
LEFT A/PAS FOR
AS FORLEFT A/P
L A/P ASSUMED TO BE CMDENG INITIALLY.
IF METHOD 1 OPTION IS ACTIVE, OTHER CMDENG A/PS AUTOMATICALLY
1
2
C OR R A/P COULD ALSO BE CMD INITIALLY.
BECOME MULTICHANNEL ARM AND MCP CMD SWITCHES ILLUMINATE.
Autoland Functional Sequence
Figure 13 (Sheet 1)
A70354
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 001-050, 052-999 ú
22-10-00
ú ú 25 Page 43 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
AUTOLANDFOR FAIL-OPERATIONALREQUIREMENTS/CONDITIONS LEFT AUTOPILOT CENTER AUTOPILOT RIGHT AUTOPILOT
FUNCTIONSROLL CHANNEL FUNCTIONSPITCH CHANNEL YAW CHANNELFUNCTIONS ROLL CHANNELFUNCTIONS PITCH CHANNELFUNCTIONS YAW CHANNELFUNCTIONS ROLL CHANNELFUNCTIONS PITCH CHANNELFUNCTIONS YAW CHANNELFUNCTIONS
1F/O F/D ON USING RFCCCAPT F/D ON USING CFCCGS ENG.HR>1500.ALT HOLD.L A/P CMDENG . LOC CAPT .______ CONTROLSLEFT A/PLATERAL CONTROLSERVO FORLOCALIZERTRACKING CONTROLS LEFTA/P PITCHALT HOLDSERVO FOR BARO POSITIONTO RUDDERSYNCHRONIZING SUPPLIES F/DCMDS FORLOCALIZERTRACKINGA/P CH SYNCSTO AIL POSN. ALT HOLDF/D CMDS FORPOSN. SUPPLIESA/P CH SYNCSTO ELEVATOR POSITIONSYNCS TORUDDER AS FORCENTERA/P AS FORCENTERA/P AS FORCENTERA/P
APP SWITCH (METHOD 2 OPTION)AS ABOVE, PILOT PRESSES BUT ALSO IS MULTI-CHANNEL ARMAS ABOVE - L FCC REMAINS CMDENG AS ABOVE - PILOT PLACES ENGAGE SWITCH INCMD, CENTER A/P BECOMES MULTI-CHANNEL ARM AS ABOVE - PILOT PLACES ENGAGE SWITCH INCMD, RIGHT A/P BECOMES MULTI-CHANNEL ARM
AND ALT HOLD.AS ABOVE, BUT NOW GSENG________ AS ABOVE CONTROLS LEFTA/P PITCHSERVO FORGLIDESLOPECAPTURE & TRACK AS ABOVE AS ABOVE TRACKG/S CAPT &F/D CMDS FORA/P CH SYNCS AS ABOVE AS ABOVE AS FOR CENTERA/P AS ABOVE
ROLL & YAW CH ENTER ROLLOUT ARMPITCH CH ENTERS FLARE ARM.ALL VALID A/PS ARE MCHENG.AS ABOVE, BUT HR < 1500FT.ASA SHOWS AUTOLAND 3 (GREEN) ARM MODEENTER ROLLOUTALIGNMENT.RUNWAYBANK CMD FORPLUS LIMITEDAS ABOVE, CMDAS FIRST INFOLLOWS C FCCTROL OF AUTOSTAB TRIM.MAINS IN CON-CHANGES. RE-CONFIGURATIONSPEED ANDING APPROACHATTITUDE DUR-ADJUSTS PITCHARM MODE.AS ABOVE,ENTERS FLARE LINELOC CENTER-NOT MAINTAINIF BANK CAN-PROVIDING YAWALIGNMEMT,DURING RUNWAYCONTROLSA/P ROLLOUTGUIDANCE SERVO ENGAGES TOCONTROL CENTERREFERENCESIN ROLLOUT ARMCMDS DISABLEDA/P LATERALCONTROL SERVO,USING CENTERA/P APPROACHMODE. F/D DISCONNECTSIF RIGHT A/PTRIM CONTROLFOR AUTO STABFIRST IN CMDRIGHT FCC ASABLED. FOLLOWSF/D CMDS DIS-FLARE ARM MODE.ERENCES INAPPROACH REF-CONTROL CENTERENGAGES TOSERVO, USINGA/P PITCH CONTROL CENTERENGAGES TOA/P ROLLOUTGUIDANCE SERVODURING ROLLOUTARM MODE ENGAGES TOCONTROL RIGHTAPPROACH REF-ERENCES INROLLOUT ARMDISABLEDA/P LATERALCONTROL SERVOUSING RIGHT A/PMODE. F/D CMDS ENGAGES TOCONTROL RIGHTDISCONNECTSPITCH SERVO,USING RIGHT A/PREFERENCES INCMD FOR STABTRIM CONTROL,IF LEFT A/P ENGAGES TOCONTROL RIGHTDURING ROLLOUTA/P ROLLOUTGUIDANCE SERVOARM MODE
AND GSENG.PITCH CH ENTERS FLARE ENGAGEAS ABOVE, BUT WHEN HR<50FT_____ TITUDE REDUCESDUCE AS ALT-COMMANDS RE-AS ABOVE,BUT AILERON HOLD APPROX.RUNWAY THRES-1400 FT FROMTARGET ISDOWN. TD POINTSEC AT TOUCH-RATE TO 2 FT/DUCE DESCENTCONTROLS PITCHATTITUDE TO RE- AS ABOVE
LEFT A/PAS FOR
AS FORLEFT A/P
PITCH CH DISENGAGES FLARE MODEROLL CH ENTERS ROLLOUT ENGAGE.TOUCHDOWN COMMANDSWINGS LEVEL STEERING CANSO NOSEWHEELDOWN PITCH CMDAPPLIES NOSEBE EFFECTIVE MAINTAINS RUD-DER CONTROLDURING HIGHSPEED SECTOROF LANDING
LEFT A/PAS FOR
AS FORLEFT A/P
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