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 displays 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. 1 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.
NOTE
Dead slaving meter needle or a needle displaced fully one direction
indicates a slaving system failure.
5.
Select slaving amplifier No. 2 if equipped.
6.
Reset heading card while checking slaving meter. If proper slaving indication is not
obtained, switch to free gyro mode and periodically set card as an unslaved gyro.
NOTE
In the localizer mode, the “TO-FROM” arrows may remain out of
view, depending upon the design of the NAV converter used in the
installation.
SECTION 4 - NORMAL PROCEDURES
Refer to Edo-Aire Mitchell Century 21 Autopilot Operator’s Manual. P/N 68S805, dated 1-79 for
Autopilot Description and Normal Operating Procedures.
(a)
PREFLIGHT PROCEDURES
NOTE
During system functional check the system must be provided
adequate D.C. voltage (12.0 VDC min.) and instrument air (4.2 in.
Hg. min.). It is recommended that the engine be operated to
provide the necessary power and that the aircraft be positioned in a
level attitude, during the functional check.
(b)
AUTOPILOT WITH STANDARD D.G.
(1)
Engage autopilot.
(2)
Control wheel movement should correspond to HDG command input.
(3)
Grasp control wheel and override roll servo actuator to assure override capability.
REPORT: VB-880
ISSUED: AUGUST 14, 1980
9-16
SECTION 9
PIPER AIRCRAFT CORPORATION
SUPPLEMENTS
PA-28-161, CHEROKEE WARRIOR II
Содержание CHEROKEE WARRIOR II
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