# SDR DXTA2011091204718

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2011
- Submitted: September 12, 2011
- Operation: Air carrier
- Aircraft: [N486QS](https://openairdocs.org/aircraft/N486QS), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1386
- Aircraft time: 9,710 hours, 4,813 cycles
- System (JASC): [3430 · Landing and Taxi Aids](https://openairdocs.org/jasc/3430)
- Part: Warning Light
- Condition: No Indication
- Stage of operation: AP
- How discovered: O
- Nature of condition: P
- Precautionary procedure: L, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2011091204718

## Discrepancy

ON APPROACH, DID NOT GET THE APPROACH ANNUNCIATION LIGHTS ON THE CDU OR ON DU4.  FUNCTION TESTED THE NR 1 AND NR 2 GPS'S IAW MSG3 MM 34-52-00. ALL TESTS CHECKED GOOD.   PERFORMED HYPER DEBUG PROCEDURE FOR FMS 1 AND FMS 2 IAW SIL D201105000003, REV 0.  PERFORMED OPS CHECK OF FMS 1 AND FMS 2 IAW GIV MSG-3 MM 34-02-00. ALL TESTS CHECKED GOOD.

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