# SDR CALA2021101801923

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2021
- Submitted: October 18, 2021
- Operation: Air carrier
- Aircraft: [N61887](https://openairdocs.org/aircraft/N61887), registered now
- Make and model: Boeing 737924
- Aircraft serial: 42192
- Aircraft time: 19,920 hours, 7,237 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: None
- Part number: NA
- Condition: Warning Message
- Location: Upper
- 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/CALA2021101801923

## Discrepancy

ALL 3 NO. 2 UPPER DU WARNING MSGS FLASHED SIMULTANEOUSLY  BTWEEN 60-80KTS.NO M/C LIGHT. PER CREW, LIGHTS WERE ON AFTER ENGINE SHUT DOWN THEY STAYED ON FOR 2-4 MINUTES THEN WENT OUT.  THE LIGHTS CAME BACK ON INTERMITTENTLY AND WERE FLICKERING. FURTHER DETAILS AWAITED.

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