# SDR MEX2002271

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2002
- Submitted: October 30, 2002
- Operation: Air carrier
- Aircraft: N158PL
- Make and model: Doug MD-88
- Registry model: [Doug MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88) (OpenAirDocs)
- Aircraft serial: 49761
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Indicator
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MEX2002271

## Discrepancy

MID - FLT 494 - AIRCRAFT RETURNED TO GATE DUE TO MISALIGNMENT OF IRS 2 AND LIGHT OF ALIGN TURNED ON DURING TAXI, MESSAGES IN FMS IRS 1 AND IRS 2 FAIL SHOWING FLAGS ON NAV 1 AND 2 IN BOTH RDMI.  AT REVISION WAS ALIGNED THE IRS, IT WORKED OK.  IRS OPERATION WAS VERIFIED IAW MM 34-43-01, TESTS OK.  (M)

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