# SDR DALA2023102708854

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2023
- Submitted: October 27, 2023
- Operation: Air carrier
- Aircraft: [N827DN](https://openairdocs.org/aircraft/N827DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31938
- Aircraft time: 28,662 hours, 11,137 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023102708854

## Discrepancy

AIRCRAFT 3827, ROTTEN EGG SMELL APPEARED AT THRUST APPLICATION, THEN THROUGHOUT FLIGHT. CORRECTIVE ACTION: INSPECTED APU BLEED DUCTS AND ENG DUCT FOR CONTAMINATION. NTF. INSPECTED DOOR HEATERS. NTF. L+R HYDS LEVELS ARE NML. NO HYD LEAKS FOUND. CHECKED CABIN + COCKPIT, NO ODORS. FOUND FWD CARGO HEAVY PAINT SMELL, ON AFT WALL NEW PAINT. FOUND LT RECIRC FILTER INSTALLED INCORRECT. HAD A 6" GAP. INSTALLED LT +RT FILTERS FOR RECIRC SYSTEM PER B737 AMM 21-25. APPLIED OZONE CONVERTER TO FWD CARGO FOR SEVERAL HOURS. SMELL IS NOW DISSAPPAITED. (LP 4432710)

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