# SDR SWAA2023041024603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2023
- Submitted: April 10, 2023
- Operation: Air carrier
- Aircraft: N780SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27885
- Aircraft time: 72,867 hours, 43,377 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Valve
- Condition: Smoke
- Location: Zn 400 Nacelle/P
- Stage of operation: CL
- How discovered: 9
- Nature of condition: B, O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023041024603

## Discrepancy

ON TAKEOFF CLIMB OUT APPROXIMATELY 800 AGL FA REPORTS SMOKE & ODOR IN CABIN. ENGINES WERE THE BLEEDS SOURCE<[01] PERFORMED FIM 29-10 TASK 807. FOUND LGTV TRANSFERRING B SYSTEM TO A THEN OVERBOARD. REMOVED AND REPLACED LANDING GEAR TRANSFER VALVE PER AMM 32-31-71. REMOVED AND REPLACED RESERVOIR MANUAL FILL PUMP PER AMM 29-18-01. RAN PACKS WITH ENGINE AIR FOR 10 MINUTES. NO SMELL NOTED PER AMM 71-00-00. PERFORMED FIM 21-00 TASK 806. REMOVED AND REPLACED WATER SEPARATOR COALESCED BAGS PER AMM 21-51-05. NO OTHER FAULTS FOUND.

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