# SDR MALA060582

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 2006
- Submitted: October 27, 2006
- Operation: Air carrier
- Aircraft: N454XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B454
- Aircraft time: 18,243 hours, 19,973 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Dpu
- Part number: 6227713003
- Part serial: 1365
- 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/MALA060582

## Discrepancy

ON THE T/O ROLL CA EADI & EHSI -FLICKERING- THE RUNWAY WAS BUMPY THE PROBLEM STOPPED JUST AFTER THE WHEELS CAME UP, IT STARTED AFTER 100 KIAS SAME AS WRITE UP NR 2 LIKE SOMETHING WAS LOOSE & THEN THE BUMPS EFFECTED IT.  THE PROBLEM REOCURRED ON LND BACK IN DTW AGAIN WENT AWAY AT LOW SPEEDS.  REMOVED AND REPLACED NR 1 DPU, ALL CHECKS GOOD.

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