# SDR SWIA97891

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N220SW](https://openairdocs.org/aircraft/N220SW), registered now
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120288
- Engine: Pwa PW118A
- System (JASC): [2422 · AC Inverter](https://openairdocs.org/jasc/2422)
- Part: Inverter
- Condition: Failed
- Location: Nr 1
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA97891

## Discrepancy

AFTER TAKEOFF BOTH AHRS SHOWED GYRO AND COMPUTER FLAGS.  NR 1 ADI CIRCUIT BREAKER OPENED.  RETURNED FOR LANDING.  AFTER LANDING, GYRO FLAGS DISAPPEARED BUT COMPUTER FLAG REMAINED ON CAPTAINS ADI.  REPLACED NR 1 INVERTER.  BOTH AHRS AND ADI'S CHECKED NORMAL WITH NO FLAGS IN VIEW.

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