TM 55-1520-240-23-7
8-90
REMOVE FLANGE MOUNTED INSTRUMENTS PILOT’S OR COPILOT’S INSTRUMENT
PANEL
8-90
INITIAL SETUP
Applicable Configurations:
All
Tools:
Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915
Materials:
None
Personnel Required:
Aircraft Electrician
Medium Helicopter Repairer
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
NOTE
Procedure is similar for removing
the cruise guide indicator and AIMS
altimeter from the pilot’s instrument
panel, barometric altimeter from
copilot’s instrument panel, and the
following instruments from both pilot’s
and copilot’s instrument panels;
Airspeed Indicator, Attitude Indicator,
Vertical Velocity Indicator, Horizonal
Situation Indicator, HSI mode select
panel and Radar altimeter. When
removing airspeed indicator, AIMS
altimeter, Barometer altimeter or
Vertical velocity indicator panel light
must be removed before removing
instrument. Removal of AIMS
altimeter is shown here.
1.
Remove two screws (1).
Do not cut or disconnect wire to lamp
bracket.
2.
Pull lamp bracket (2) aft and away from
instrument (3).
3.
Remove two screws (4) and adaptor bracket (5).
4.
Remove screw (6) (or screws).
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