Piper Turbo Saratoga PA-32-301T Pilot's Manual page 272

SECTION
9 PIPER
AIRCRAFT
CORPORATION
SUPPLEMENTS PA-32-301T,
TURBO SARATOGA
(l)
Altitude
Loss During Malfunction:
a.
An
autopilot malfunction
during climb, cruise or descent
with
a
3
second
delay in
recovery
initiation
could result
in
as
much as 60° of bank and 300' altitude loss. Maximum
altitude loss was recorded at 175 KIAS
during descent.
b.
An autopilot malfunction during an approach with a 1
second delay
in
recovery
initiation could result in
as much
as 18° bank and 60'
altitude
loss.
Maximum altitude loss
measured in approach configuration,
gear
down,
and
operating either coupled or uncoupled.
(b)
COMPASS SYSTEM
(1)
Emergency Operation With Optional
NSD 360A(HSI) Slaved
and/or Non-Slaved:
NSD 360A
a.
Appearance of HDG Flag:
1.
Check air supply gauge
(vac
or
pressure)
for adequate
air supply
(4
in. Hg. min.).
2.
Check compass
circuit breaker.
3.
Observe display for proper operation.
b.
To disable heading card
-
pull circuit breaker
and use
magnetic
compass for directional
data.
NOTE
If
heading card is
not operational, autopilot
should not be used.
c.
With card disabled
VOR/Localizer
and Glide
Slope dis-
plays are still functional; use card set to
rotate
card to
aircraft
heading
for correct picture.
d.
Slaving Failure
-
(i.e.
failure to self correct for gyro drift):
1.
Check gyro slaving switch is set to
No.
l position (if
equipped with Slave
No.
1-
No. 2
switch) or "Slaved"
position when equipped
with
Slaved
and Free
Gyro
Mode Switch.
2. Check for HDG Flag.
3.
Check
compass
circuit breaker.
4.
Reset heading card while observing slaving meter.
REPORT:
VB-1070
ISSUED: OCTOBER 2, 1980
9-48