Chapter 5 – General Operation
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5.5.2 Main Rotor Balance – Paper
Charts (All units)
Find complete installation instructions for main rotor balance in
the manufacturer’s maintenance manual or the appropriate
Honeywell Model 177M-6A Vibrex Balancer checklist.
Do main rotor balance operations, as follows:
1. Press TRACK & BALANCE from the Main Menu screen to
acquire a main rotor balance reading.
2. Operate the aircraft in the run condition specified by the
balance chart. This condition is usually hover for balance
measurements and straight and level for vertical
measurements.
3. Select the desired channels (either 1A or 2B) the user wants
to read from.
NOTE: If the user is using lateral and vertical sensors that
share the same magnetic pickup, press the CHANGE
CHANNELS context key and choose 1A and 2A for the
appropriate two-channel assignments. These choices are
the defaults.
4. Store the readings by pressing START after they have been
acquired.
5. The user can store up to 50 balance readings (total), after
which the first readings are overwritten.
NOTE: The readings from the Vibrex unit are compatible
with the paper balance graphs used with the Honeywell
Model 177M and Model 8350 Vibrex Balancers.
After the Vibrex unit has taken balance measurements, the
following screen displays:
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