(3)
With card disabled:
a.
VOR and Glide Slope displays are still functional; use card set to rotate card to aircraft
heading for correct picture.
b.
Localizer - left-right information still usable. Flag information is disabled - compare
needle with No. 2 indicator for valid left-right needle operation.
(4)
Slaving Failure - (i.e. failure to self-correct for gyro drift):
a.
Check gyro slaving switch is set to No. 1 position.
b.
Check for HDG Flag.
c.
Check compass circuit breaker.
d.
Reset heading card while observing slaving meter.
e.
Select slaving amplifier No. 2 (gyro slaving switch is set to No. 2 position).
f.
Reset heading card while checking slaving meter.
g.
Switch to free gyro and periodically set card as unslaved gyro.
NSD 360A (Instrument with red-white striped NAV-HDG Flags)
(1)
The emergency procedures for the NSD 360A remain identical to those listed for the NSD
360 (above), except that the presence of the NAV Flag on a localizer frequency invalidates
the NAV left-right information. Usable navigation data will be indicated in both VOR and
Localizer modes by the absence of the NAV Flag, whether the card is disabled or not.
(2)
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
PREFLIGHT
(a)
AUTOPILOT
(1)
Place radio coupler in HDG mode (if installed) and place the A/P “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 center knob.
(2)
Set proper D.G. heading on D.G. and turn HDG bug to aircraft heading. Engage HDG mode
rocker switch and rotate HDG bug right and left. Aircraft control wheel should turn same
direction as bug. Grasp control wheel and manually override servo, both directions.
(b)
RADIO COUPLER - (OPTIONAL)
(1)
Tune and identify VOR or VOT station. Position radio coupler to OMNI mode. Engage
autopilot “ON” and HDG switches. Set HDG bug to aircraft heading and rotate OBS to
cause OMNI indicator needle to swing left and right slowly. Observe that control wheel
rotates in direction of needle movement.
(2)
Disengage A/P “ON-OFF” switch. Reset radio coupler control to HDG.
IN-FLIGHT
(a)
Trim airplane (ball centered).
(b)
Check air pressure or vacuum to ascertain that the directional gyro and attitude gyro are receiving
sufficient air.
REPORT: VB-880
ISSUED: DECEMBER 16, 1976
9-6
REVISED: JULY 11, 1977
SECTION 9
PIPER AIRCRAFT CORPORATION
SUPPLEMENTS
PA-28-161, CHEROKEE WARRIOR II
Содержание CHEROKEE WARRIOR II
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