# SDR DALA2025121209104

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 9, 2025
- Submitted: December 12, 2025
- Operation: Air carrier
- Aircraft: [N104DU](https://openairdocs.org/aircraft/N104DU), registered now
- Make and model: Airbus BD-500-1A10
- Registry model: [Airbus BD-500-1A10](https://openairdocs.org/model/airbus-canada-ltd-ptnrsp-bd-500-1a10) (OpenAirDocs)
- Aircraft serial: 50023
- Aircraft time: 17,771 hours, 8,293 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025121209104

## Discrepancy

ON APPROACH AT 4000' MSL, BOTH PILOTS NOTICED FUMES ON THE FLT DECK. VERY NOTICEABLE DIRTY SOCK SMELL. NO VISIBLE FUMES. 2 PACKS, SINGLE RIGHT BLEED DUE TO MEL CONFIGURATION. SMELL AFTER APU START WE TURNED OFF REMAINING RIGHT BLEED AND SMELL SLIGHTLY DISSIPATED. C/W WORKCARD #550-2003- 0550-2202. REMOVED LPC PLUG 2 PER 72-31 ALL 8 HPC PLUG PER AMP 72-35 AND N1 SPEED SENSOR PER AMP 72-34. PERFORMED BORO OF LPC & HPC FOR OIL WETTING. NO STAINS OR WETTING IN LPC-HPC. BORO OF #3 BEARING COMPT- NO DAMAGE TO COMPT. INSTALLED LPC PLU 2 PER AMP 72-31 ALL 8 HPC PLUGS PER A AMP 72- 35 AND N1 SPEED SENSOR PER AMP 72-34. C/W DUCT BURN OUT & P-TRAK SAMPLING - RESULTS PENDING. C/W JIC - OK FOR SERVICE. (LP# 7364092)

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