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function) -If VNAV has been selected, the FMS may select the pitch hold mode -Deselecting VNAV when GP, PATH or FCS ALTS are the active modes with flight plan target altitude as the active reference The pitch mode is deselected when selection or automatic capture of another active vertical mode occurs. The pitch refer-ence value can be changed by using the UP/DOWN wheel on the FGP. Rotation of the VS/pitch wheel changes the pitch reference by 0.5°/click. The pitch reference is reset to the current pitch attitude, upon either AP engagement, transferring to pitch mode, or FD sync. When in altitude select capture, rotating the VS/pitch wheel also re-arms altitude select mode. When capturing or tracking a preselected altitude, a new preselect altitude must be chosen prior to selection of pitch mode, to avoid an immediate recapture of the existing preselected altitude. Pitch Mode is annunciated by PTCH in green in the vertical capture field. Volume 2 Flight Crew Operating Manual May 06/2005 CSP 100-6 REV 2
The ALTS mode will capture and track the altitude that is closest in the direction the aircraft is headed. This mode is auto-matically selected (no button for manual selection is provided) upon existence of any mode (FD is selected on, or AP is engaged) except for glideslope capture, vertical go around, altitude hold or VNAV glide path capture, while the FMS alti-tude is invalid or missing. ALTS capture is deselected upon the occurrence of any of the following: Deselecting of ALTS track will occur due to any of the following: |
