PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 7
Nov 30/06
3G15
34-10-00
5. Outside Air T
emper
ature (OAT) Gauge
A. Standard (See Figure 1.)
(1) Description and Operation
OAT’s are mounted in the pilot’s windshield in Warrior III airplanes and are simple direct
measuring thermometers. Although unlit internally, the dial is finished in fluorescent
luminescent paint.
(2) Removing and Installing
CAUTION: DURING INSTALLATION OF ALL OAT’S, ONLY FINGER TIGHTEN GAUGE AND
EXTERNAL THREADED HEX TUBE (SUNSHIELD). OVER TORQUING WILL
DAMAGE INSTRUMENT.
(a) Remove external sunshield by turning it counterclockwise. Turn by hand only.
(b) Remove bushing on outside of windshield by sliding it off of threaded shaft. Note position
of any washers or spacers.
(c) Remove gauge and inner bushing by pulling gauge through windshield from inside the
airplane.
(d) Install new gauge in reverse sequence. Check that tapered face on inner and outer
bushings are positioned properly against windshield. Check gauge position before hand
tightening sunshield.
B. Optional
In S/N’s 2842218 & up, with the optional Avidyne Entegra EFIS installed; OAT is provided by the
Magnetometer / OAT Sensor Assembly (Mag/OAT) mounted in the underside of the outboard left
wing, which feeds temperature data to the Primary Flight Display (PFD) and Multifunction Display
(MFD).
See Electronic Flight Instrument System and Magnetometer in 34-20-00 for additional information.
OAT Gauge Installation
Figure 2
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