TABLE X-III. GYRO HORIZON INDICATOR (cont)
Trouble Cause Remedy
Instrument tumbles in Low vacuum. Reset regulator.
flight.
Dirty filter. Clean or replace filter.
Line to filter restricted. Replace line.
Plug missing or loose Replace or tighten plug.
in instrument
Instrument does not Instrument not level Loosen screws and level
indicate level flight. in panel. instrument.
Aircraft out of trim. Trim aircraft.
Bar high after 180° Normal, if it does not
turn. exceed 1/16 inch.
10-23. REMOVAL AND REPLACEMENT. (Refer to Paragraphs 10-74 and 10-78 of this section.)
10-24. GYRO HORIZON.
10-25. GENERAL. The gyro horizon is essentially an air driven gyroscope rotating in a horizontal plane and is
operated by the same principal as the directional gyro. Due to the gyroscopic inertia, the spin axis continues to
point in the vertical direction, providing a constant visual reference to the attitude of the airplane relative to
pitch and roll axis. A bar across the face of the indicator represents the horizon and aligning the miniature
airplane to the horizon bar simulates the alignment of the airplane to the actual horizon. Any deviation
simulates the deviation of the airplane from the true horizon. The gyro horizon is marked for different degrees
of bank.
10-26. TROUBLESHOOTING.
10-27. REMOVAL AND REPLACEMENT. (Refer to Paragraphs 10-74 and 10-78 of this section.)
10-28. RATE OF CLIMB INDICATOR.
10-29. GENERAL. The rate of climb indicator measures the rate of change in static pressure when the airplane
is climbing or descending. By means of a pointer and dial, this instrument will indicate the rate of ascent or
descent of the airplane in feet per minute. But due to the lag of the instrument, the aircraft will be climbing or
descending before the instrument starts to read and the instrument will continue to read after the aircraft has
assumed level flight. In rough air, this should not be considered a malfunction.
Revised: 2/13/89
2F23
CHEROKEE ARROW III SERVICE MANUAL
INSTRUMENTS
To Next Page
Loading...
Need help?
General