# SDR TRBA2007079

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2007
- Submitted: September 21, 2007
- Operation: Air carrier
- Aircraft: [N448AM](https://openairdocs.org/aircraft/N448AM), registered now
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 448
- Aircraft time: 24,167 hours, 22,972 cycles
- System (JASC): [3425 · Integrated Flight System](https://openairdocs.org/jasc/3425)
- Part: Indicator
- Condition: Failed
- Location: Cockpit
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2007079

## Discrepancy

DURING T/O ROLL, F/O'S EHSI WENT BLANK.  ABORTED TAKEOFF AND RETURNED TO BLOCK.  REMOVED AND REPLACED F/O EHSI AND PERFORMED OPT CK IAW JIC NR 34-75-81 AND FOUND SYSTEM WORKING PROPERLY.

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