# SDR IPXA2021120176533

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 29, 2021
- Submitted: December 2, 2021
- Operation: Air carrier
- Aircraft: [N608UP](https://openairdocs.org/aircraft/N608UP), registered now
- Make and model: Boeing 747-8F
- Registry model: [Boeing 747-8F](https://openairdocs.org/model/boeing-747-8f) (OpenAirDocs)
- Aircraft serial: 64255
- Aircraft time: 16,143 hours, 2,319 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: None
- Condition: None
- Location: Cockpit
- Stage of operation: DE
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2021120176533

## Discrepancy

INSPECTION TYPE:N/A"SMOKE/OVRD VLV" STATUS MSG. ILLUMINATED APPROX FL210 DURING DESCENT.MX MSG 21405 EQUIMENT COOLING CMC TEST C/W - PASS PER FIM 21-50-00-810-824

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