# SDR 99ZZZM764

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N433EX
- Make and model: Boeing 727151C
- Aircraft serial: 19868
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Bulb
- Part number: 308
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZM764

## Discrepancy

FLT 719 - IND - DURING TRANSIT CHECK, LOWER WINDOWS OF SMOKE DETECTORS APPEAR TO HAVE NO OR AT LEAST IN SUFFICIENT BACKGROUND LIGHTING.  RELAMPED LOWER BULBS ON FLIGHT ENGINEERS SMOKE DETECTOR.  (M)

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