190-01717-B1
G500/G600 TXi Part 23 AML STC Maintenance Manual
Rev. 1
Page 4-32
Figure 4-23 GAD Fault Message Troubleshooting
G A D F au lt M e ss ag es
If fa u lt s till e x is ts ,
c o n ta c t G a rm in .
G A D re p o rts
p itc h
d e v ia tio n
E rror de te cted in on e
o r m o re a n alo g pitch
ou tp uts
O R
A C referen ce is n ot
b e ing p ro vide d
E rro r de te cted in
on e or m o re
an alog yaw rate
ou tp uts
C a u s e
V erify corre ct
w iring for a na lo g
p itch ou tp uts from
G A D 4 3 /43 e
V erify A C
referen ce volta ge
is o n an d w iring is
co rre ct
V e rify co rrect
w irin g fo r an alog
roll o utpu ts from
G A D 43 /4 3 e
V e rify A C
re fe re nce vo ltag e
is on a n d w irin g is
corre ct
V erify corre ct
w irin g fo r a n alo g
yaw ra te ou tp uts
from G A D 4 3/43 e
C o rre ctiv e
A c tio n
G A D re p o rts
ro ll d e v ia tio n
C a u s e
E rro r d e tecte d in o ne
o r m o re a n alo g ro ll
o utpu ts
O R
A C re fe re nce is n ot
b eing p ro vid e d
C o rre ctiv e
A ctio n
G A D re p o rts
y a w ra te
d e v ia tio n
C a u s e
C o rrec tiv e
A c tio n
A R IN C 42 9
h ea d ing d a ta from
th e A H R S h as
tim ed o ut
Inspe ct A R IN C
4 29 d a ta bu s
w irin g from A H R S
to G A D 4 3/43 e
V e rify A H R S is
po w e re d o n
G A D re p o rts
A H R S A 4 2 9
a tt tim e o u t
C a u s e
C o rrec tiv e
A c tio n
G A D 4 3/43 e ha s
rece ive d a pitch value
grea te r th an ± 90 d eg
fro m the A H R S
G A D re p o rts
A H R S p itc h
o u t o f ra n g e
C a u s e
C o rre ctiv e
A c tio n
T he A H R S h a s fla gg ed
th e he a din g ou tp u t a s
in va lid d u e to a n in te rn a l
A H R S m o nito r fau lt
If the e rror
p e rsists, re tu rn th e
A H R S to G arm in
for service
G A D re p o rts
A H R S A 4 2 9
a tt in v a lid
C a u s e
C o rrec tive
A c tio n
T h e A H R S h as flag g ed
the h ea d ing o u tpu t as
in va lid d ue to a n in te rn a l
A H R S m o nitor fau lt
If the e rror
p ersists , re tu rn th e
A H R S to G arm in
for service
G A D re p o rts
A H R S
a ttitu d e
in v a lid
C a u s e
C o rrec tive
A ctio n
If th e erro r
pe rsists , return the
A H R S to G a rm in
fo r se rvice
M a in te n an ce
L o g M e ss ag e