Piper ARCHER II Pilot Operating Handbook page 230

AFMS-1259-01
DQ-17-005
Page: 3 of 8
The GNS-W interfaces with an E/HSI or CDI to provide desired course and cross track deviation
display. The E/HSI can be used for GPS or radio navigation displays as selected by the pilot. A
navigation source annunciator is located within the area containing primary flight instruments to
indicate whether radio navigation or GPS information is being displayed. The GNS-W contains
a navigation database of NDBs, VORs, Airports, airspace and SIDs/STARs. The database is
maintained on a 28-day cycle. The GNS-W allows the pilot to create up to 20 flight plans, with
up to 31 waypoints in each flight plan. The unit can store up to 1000 user waypoint locations.
The GNS-W uses a flashing "MSG" annunciator at the bottom of the screen (directly above the
MSG key) to alert the pilot of any important information or warnings. While most messages are
advisory in nature, warning messages may require the pilot's intervention.
Leg sequencing is automatic within the GNS-W. For installations with electronic HSIs the course
pointer is automatically slewed to the next waypoint. For installations with electro/mechanical
HSls the course pointer is changed to the next waypoint by the pilot with a prompt provided by
the GNS-W. The pilot will receive a visual MSG advising of approach to a waypoint and in
mechanical HSI installations, a prompt to reset the course pointer to the next leg.
The GNS-W can provide external outputs to a compatible EFIS system (Garmin G600/500,
Aspen EFD1000, Sandel SN3500 etc). Where required, an MD41-14xx annunciator acts as a
"repeater" for icons/ displays on the GNS-W:
VLOC: NAV or ILS information presented on the HSi or CDI
GPS: GPS information presented on the HSI or CDi
TERM: indicates aircraft is within 30 miles of departure or arrival airport
APR: indicates the LPV or LNAV approach is active
WPT: indicates reaching a waypoint
MSG: indicates that GNS-W message(s) are active
INTG: indicates GNS-W detected a position error or the GNS-W is unable to calculate
the integrity of the position
1.2. GNS-W options on aircraft
The following table defines which sections of this AFMS are applicable to this installation on
the aircraft:
Installed
Option or AFMS Ref:
Enabled
GNS430W / AW wl Sections 1 - 10 (excluding TAWS information)
GNS530W / AW Sections 1 — 10 (excluding TAWS information)
GNS530W TAWS / AW TAWS Sections 1 ~ 10 (excluding TAWS information)
GNS530W TAWS / AW TAWS
with TAWS installed
Sections 1-10
TAWS-B Capability
Section 1.7, Section 2.11, Section 3.2 & Section 4.2
TAWS-B remote annunciation
Section 1.7 para 3
Autopilot capable of coupled
LPV approach
Section 2.7
DF 29
29 Copyright Gama Aviation (Engineering) Lid