L-1011 Autoflight: VOR Arm, Capture and Track (22-29)

The usual heading guidance prior to initial VOR capture is provided by the Heading Select mode. Notice during pre-capture guidance that a pitch mode is engaged.

The capture of a VOR radial is similar to all other radio beam captures in that it is done in three steps: (1) arm, (2) capture and (3) track; with only the first two steps being annunciated. When VOR capture occurs, VOR ARM changes to VOR on both AFCS MODE annunciators. During capture, a maximum bank angle of 28º may be obtained at any true airspeedl it is not limited as a function of true airspeed as it is in the Heading Select mode. Track status is achieved when the bank command becomes 5º or less. Subsequent bank commands will not exceed 10º during VOR track status. There is no annunciation change to indicated track status.