# SDR UIEA2026101600989

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2026
- Submitted: October 19, 2026
- Operation: Air carrier
- Aircraft: [N485MC](https://openairdocs.org/aircraft/N485MC), registered now
- Make and model: Boeing 747-45EF
- Registry model: [Boeing 747-45EF](https://openairdocs.org/model/boeing-747-45ef) (OpenAirDocs)
- Aircraft serial: 30607
- Aircraft time: 114,392 hours, 20,145 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Controller
- Part number: 79275515
- Part serial: 2016030007
- Condition: Faulted
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026101600989

## Discrepancy

BLD 1 OVHT/PRV CAUTION(<P >REPLACED PRV CONTROLLER AND ENG 1 BLEED SYSTEM. OPS CHECK NORMAL IAW AMM 36-11-20</P>)

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