Piper CHEROKEE ARCHER II Pilot Operating Handbook page 198

PIPER AIRCRAFT CORPORATION
PA-28-181, CHEROKEE ARCHER II
SUPPLEMENT 3
AUTOCONTROL IDB AUTOPILOT INSTALLATION
SECTION 1 - GENERAL
SECTION 9
SUPPLEMENTS
This supplement supplies information necessary for the operation of the airplane when the optional
Piper AutoControl IIIB Autopilot is installed. The information contained within this supplement is to be
used "as described" in conjunction with the complete handbook.
This supplement has been "FAA Approved" as a permanent part of this handbook and must remain in
this handbook at all times when the optional Piper AutoControl I1IB Autopilot is installed.
SECTION 2 - LIMITATIONS
(a) Autopilot use prohibited above 165 MPH CAS.
(b) Autopilot "OFF" during takeoff and landing.
SECTION 3 - EMERGENCY OPERATION
(a) In an emergency the AutoControl I1IB can be disconnected by:
(I)
Pushing the roll ON-OFF Rocker Switch "OFF:"
(2) Pulling the Autopilot Circuit Breaker.
(b) The autopilot can be overpowered at either control wheel.
(c) An autopilot runaway, with a 3 second delay in the initiation of recovery while operating in a
climb, cruise or descending flight, could result in a 45° bank and 180' altitude loss. Maximum
altitude loss measured at 165 MPH in a descent.
(d) An autopilot runaway, with a 1 second delay in the initiation of recovery, during an approach
operation, coupled or uncoupled, could result in a 18° bank and 10' altitude loss.
SECTION 4 - NORMAL PROCEDURES
PREFLIGHT
(a) AUTOPILOT
(1)
Place Radio Coupler in "HOG" Mode (if installed) and place the AP "ON-OFF" switch to
the "ON" position to engage roll section. Rotate roll command knob left and right and
observe that control wheel describes a corresponding left and right turn, then cenler knob.
(2) Set correct compass heading on D.G. and tum HDG bug to aircraft heading. Engage "HDG"
mode rocker switch and rotate HGD bug right and left. Aircraft control wheel should tum
same direction as bug. Grasp control wheel and manually override servo, both directions.
ISSUED: AUGUST 15
t
1975
REPORT: VB-760
9-9