User manual

Piper PA-31T Cheyenne X
Aerosoft GmbH 2007
70 71
70 71
SPEED PROFILE (SPD PRF) mode
The speed profile mode is used primarily in climb or descend. The pilot
engages SPEED PROFILE at the speed appropriate to his altitude at the
time of engagement. Or he adjusts to the appropriate speed for his
altitude with the vertical trim switch after engagement. The reference
airspeed may be adjusted at a rate of two knots per second by use of
the Vertical Trim switch on the Mode Controller.
Engagement will cause „SPD PRF” to be lighted on the Annunciator
Panel and activate the command bars on the FCI to call for pitch
maneuvers necessary to maintain the airspeed appropriate for the
current altitude. If the autopilot is engaged, the airspeed will be auto-
matically adjusted by 1.3 KIAS per 1000 feet in climb or descent.
PITCH ATTITUDE SELECTOR KNOB
Depending on the selected autopilot mode, clicking the UP/DN position
of the PITCH ATTITUDE SELECTOR KNOB (1) produces the following
results:
Pitch Mode: +/- 0.5° pitch per click
IAS Mode: +/- 1 kt per click
SPD PRF Mode: +/- 1 kt per click
Kein Modus: Trim adjust +/- 1. Equals pressing the 1 or 7 keys on
the numeric keypad