Textron 172R180HP, Pilot Operating Handbook

Page: 354 / 396

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 7 - FAA APPROVED
2. AVIONICS MASTER - ON.
3. POWER APPLICATION AND SELF TEST
CESSNA
MODEL 172A
A self test is performed upon power application to the
computer. This test is a sequence of internal checks that
validate proper system operation prior to allowing normal
system operation. The sequence is indicated by "PFT" (pre-
�
flight test) with an increasing number for the sequence steps.
Successful completion of self test is identified by all display
segments being illuminated (Display Test) and the disconnect
tone sounding.
4. AUTOPILOT -- ENGAGE by pressing AP button.
5. FLIGHT CONTROLS -- MOVE left and right to verify that the
autopilot can be overpowered.
NOTE
Normal use will not require the autopilot to be overpowered.
6. A/P DISC Switch -- PRESS.
disconnects and tone sounds.
BEFORE TAKEOFF:
Autopilot -- OFF.
AUTOPILOT ENGAGEMENT:
Verify that the autopilot
1. AP Button -- PRESS. Note AOL annunciator on. If no other
modes are selected the autopilot will operate in the AOL
mode.
NOTE
Aircraft heading may change in ROL mode due to
turbulence.
S7-10
Dec 2/96
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