# SDR ASAA2016062717183

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2016
- Submitted: June 29, 2016
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 10,754 hours, 3,451 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016062717183

## Discrepancy

AFTER POWER INTERRUPTION, F/O'S PFD DISPLAYS FD AMBER WARNING, ALSO, F/O'S FD SWITCH TURNED TO ON, THERE'S NO FD OR MA ON F/O'S SIDE.  ACFT GROUNDED.  CYCLED POWER, OPS NORMAL, DUE TO WEAK GPU, ACCOMPLISHED DFCS BITE NO FAULTS NOTED, REF FIM 22-11, TASK 801, ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL.

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