# SDR YENA2026101900990

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2026
- Submitted: October 20, 2026
- Operation: Air carrier
- Aircraft: [N3284J](https://openairdocs.org/aircraft/N3284J), registered now
- Make and model: Airbus BD-500-1A11
- Registry model: [Airbus BD-500-1A11](https://openairdocs.org/model/airbus-canada-lp-bd-500-1a11) (OpenAirDocs)
- Aircraft serial: 55387
- Aircraft time: 2,369 hours, 1,186 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Condition: False Indication
- Location: Zone 400
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2026101900990

## Discrepancy

FLT#953, JFK-DJT-RTF. 36 L BLEED FAIL.  L PRESS REG SOV INOP. ( ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) LEFT SIDE CBV OPERATIVE ). ACCOMPLISHED METHOD 1. VERIFIED NO EVIDENCE OF EXCESSIVE HPV LEAKAGE PER MEL 36-12-01E. A/C OK TO CONT. CROSSBLEED VALVE (CBV) VERIFIED OPERATIVE PER MEL 36-12-01E. PLACED ON MEL 36-12-01E. CAT. C. MDDR 633465. MX4 UPDATED. PLACARD INST. MCC NOTIFIED.; (SUPPLEMENTAL INFORMATION TO FOLLOW).

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