# SDR SWAA051330

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2005
- Submitted: May 6, 2005
- Operation: Air carrier
- Aircraft: N630WN
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27705
- Aircraft time: 30,602 hours, 25,823 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Relay
- Part number: FCC4008
- Condition: Faulty
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA051330

## Discrepancy

AIR TURNBACK.  ANNUNCIATOR LIGHTS ILLUMINATED ON FWD INSTRUMENT PANEL & INDICATOR LIGHTS ON FMC STAYED ILLUMINATED.  ALL LIGHTS CEASED UPON LANDING.  REMOVED AND REPLACED MASTER TEST RELAY-R33 PER MM.

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