Piper ARCHER III Pilot Operating Handbook page 234

SECTION7
DESCRIPTION & OPERATION
7.17 STANDBY INSTRUMENT (continued):
Refer to Garmin 05 Electronic Flight instrument Pilot's Guide for Certified •
Aircraft, part number 190-01112-12 Rev D (or later approved revisions),
for a list of system messages and description of the Garmin 05 standby
flight instrument This reference material is not required to be on board the
aircraft but does contain a more in depth description of all the functions and
capabilities of the Garmin GS standby instrument.
The standby instrument must be checked for
proper operation prior
prohibited when any component of the standby
instrument is inoperative.
7.19 FUEL SYSTEM
Two twenty-five gallon (24 gallons usable) fuel tanks are secured as the
leading edge of each wing by screws and nut plates. Each tank contains an
indicator tab in the filler neck to determine fuel status. 17 gallons of usable fuel
is measured at the bottom of each indicator tab.
The minimum fuel grade is I 00 or 1 DOLL. There is one float type fuel sensor
in each wing. The signal corresponding to the position of the floats is sent to
the Garmin Engine Airframe (GEA) interface unit where it is converted into fuel
quantity. The fuel quantity information is then sent to the MFD for display.
After power-up of the avionics system, the Fuel On Board (FOB) should
be synchronized with the corresponding fuel quantity sensed in each tank. This
can be done by pressing the FOB SYNC softkey on the MFD's AUX-WEIGHT
PLANNING page. The gallons rema. i ning will be set to the current fuel quantity
in the tanks and the gallons used will be set to zero as shown in the FUEL
CALC window of the ENGINE page of the MFD. Pressing FOB SYNC softkey
is required to make calculated parameters such as range, endurance, fuel over
destination (FOO) and the fuel range ring accurate.
The fuel selector control contains three positions: "OFF", "L" (left tank),
and "R" (right tank). To turn the fuel off, rotate selector handle counter­
clockwise to the "OFF' position while depressing the button. Rotate the selector
handle clockwise to either "L" or "R" positions to permit fuel tlow. The button
will release automatically preventing accidental selection of the fuel to the off
position.
REPORT: VB-2749
7-46
PA-28-181, ARCHER ill
NOTE
flight. IFR flight is
tO
ISSUED: December 22, 2017
REVISED: March 27, 2020
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