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 TM
9-1270-219-13&P
Section
IV.
REMARKS
Ref. Code
Remarks
A
Test is performed using built-in-test (BIT) to determine system operation by checking each LRU.
B
There are no special service actions, however, a pressure check is required after either the EPU or AADS is
repIaced.
The air data LRUs do not require boresight alignment. The probe mount will be aligned during system boresight
C
D
The subsystem is repaired by replacement of LRUs found defective during BIT operation.
E
Air data probe does not require intermediate maintenance, however, the probe failure will be verified by AVIM
before unserviceable unit is returned to depot.
F
System Level.
G
LRU Level.
H
SRU Level.
I
The chassis assembly is not field separable but will be examined by depot maintenance to determine
serviceability.
J
To be agreed with BHT.
K
Repair of LRUs at AVIM level is limited to replacement of SRUs in the EPU only, and the Sensor Installation
is also repairable at AVIM. The AADS and LAI LRUs are non-repairable at AVIM. Failure of these units will
be verified at AVIM before unserviceable unit is returned to depot.
L
Refer to T M
for
description
and
use
of
failure
isolation
shop
set
(FISS).
9-4933-270-30
Change 1
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