Piper SEMINOLE PA-44-180, Maintenance Manual

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yaw and roll forces to the human operator's ability to interpret and respond the displays. The “ball” portion of
both instruments is free to roll within the inclined glass tube display on lower instrument face. The glass tube is
filled with non-freezing liquid to dampen the movements of the ball within the tube. It must be realized that the
“ball” portion of both instruments ONLY INDICATES SIDE FORCES. The turn and bank rotor is driven either
electrically or by air while the pictorial rate instrument is electrically driven.
TROUBLESHOOTING.
An obvious malfunction of either instrument requires repair by an FAA approved instrument repair facility, or
replacement. Service is restricted to the instrument installation and air/ electric power requirements.
GYRO INSTALLATION INSPECTION.
1. Ensure proper voltage is available.
2. Ensure electrical grounding is intact.
3. Ensure circuit breaker is functional.
4. Ensure all electrical plugs and connections are secure.
— END —
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
3 4 - 2 5 - 0 0
Page 34-12
Revised: May 15, 1989
2J6
PIPER AIRCRAFT