A V I O N I C S L I M I T E D
2.4.2 PERIODIC
MAINTENANCE
The
INS 422
does not require any regular general maintenance except as
described in this section.
A. VOR
Checks
VOR accuracy checks required for IFR flight must be performed on
the
INS 422
every 30 days to verify the unit does not exceed the
allowable bearing error. Refer to CFR 14 paragraph 91.171
B.
Cleaning The Display Filter
The display filter on the front bezel of the
INS 422
can be cleaned
with a soft cloth dampened with clean water. DO NOT use any
chemical-cleaning agents. Be careful not to scratch the surface of
the display filter.
C.
Equipment
Calibration
The
INS 422
Integrated Navigation System as with all solid state
avionics equipment, is expected to have a high degree of reliable
performance.
Varied use and extreme climatic conditions over time can alter
normal performance such to require minor calibration and/or
cleaning of the
INS 422
unit.
In addition to monthly VOR accuracy checks for IFR flight, it is
important that the
INS 422
system be serviced by the factory or its
authorized representatives any time the VOR accuracy checks show
the unit to be outside of the allowable bearing error, or Localizer and
Glideslope indications show the unit to be outside of the normal
allowable limits, or any questionable operation is observed.
DURING THE ONE-YEAR FACTORY WARRANTY, THE INS 422 INTEGRATED
NAVIGATION SYSTEM MUST BE SERVICED BY VAL AVIONICS LTD.
UN-AUTHORIZED REPAIR BY OTHER THAN VAL AVIONICS SERVICE
DEPARTMENT DURING THIS WARRANTY PERIOD WILL INVALIDATE THE
FACTORY WARRANTY.
INS 422 Installation/Owners Manual
Original Issue – June 2001
VPN 701034
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