machined cam at the top to release the aero-
dynamic yaw vane as the seat travels up the guide
rails. Two holes in each inboard guide rail allow
installation of two seat servicing pins to support
each seat at the 42-inch alternate maintenance
position.
SEAT CONTROL SYSTEM.— The seat con-
trol system permits vertical height adjustment of
each crew member’s seat before and during’ nor-
mal flight. Phase reversal of two phases of a three-
phase power source permits raising or lowering
each seat according to the selected UP or DOWN
position of the switch on the SEAT panel on the
side console at each crew member station (fig.
6-3). The seat control system consists of a
seat switch and a seat adjustment actuator
and motor. Seat adjustment is provided by a
Figure 6-3.—Seat control panel and seat switch.
6-7
