# SDR AALA201905279003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2019
- Submitted: May 27, 2019
- Operation: Air carrier
- Aircraft: [N940AN](https://openairdocs.org/aircraft/N940AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30598
- Aircraft time: 57,252 hours, 23,453 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201905279003

## Discrepancy

AIRCRAFT NOT GROUNDED: PILOT REPORTS INTERMITTENT SYSTEM FAILURE WARNINGS ILLUMINATED ON THE HUD COMBINER THE DURATION OF THE WARNINGS WERE JUST 1-2 SECONDS. THE FIRST OFFICER HUD ANNUNCIATOR PANEL ALSO ILLUMINATED SYSTEM FAIL BUT ALSO JUST FOR 1-2 SECS. ALL HUD INDICATIONS APPEARED NORMAL. MAINTENANCE ACCOMPLISHED HUD TEST IAW MM 34-36-00. TESTS OK.

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