Aircraft Systems • 9
Standby Altimeter & Airspeed Indicator
The pitot-static system provides information to the standby altimeter and
airspeed indicator.
G500 Failures & Partial-Panel Approaches
For partial-panel training and checkrides, the two most common training
scenarios are simulated AHRS failure and PFD failures.
Failure Condition Simulated By
Instrument
Approaches Available
AHRS Failure Cover Attitude
Indicator (ADI)
All precision and non-
precision
PFD Failure Dim PFD/MFD screens Only GPS approach
Electrical Failure No simulated failure
available
None
ADC Failure No simulated failure
available
All precision and non-
precision
Circuit breaker-simulated failures are prohibited in ATP aircraft.
Piper and Garmin advise against pulling circuit breakers as a
means of simulating failures on the Garmin G500 system. Pulling
circuit breakers, or using them as switches, has the potential to
weaken the circuit breaker to a point at which it may not perform
its intended function. Also reference Advisory Circulars 120-80,
23-17B, and 43.13-1B.
Attitude & Heading Reference System (AHRS) Failure
Indications:
1. The sky/ground presentation is removed.
2. A red X appears across the Attitude Direction Indicator (ADI).
3. Yellow “ATTITUDE FAIL” and “HDG” alert messages appear on the PFD.
4. A “TRK” message appears to the right of the ground track at the top of
the compass rose.
5. Rate-of-turn information is unavailable.
6. “HDG LOST”, “HDG FAULT”, and "TRK TRAFFIC” alert messages appear
on the MFD.
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