# SDR UIEA2020040600707

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2020
- Submitted: April 6, 2020
- Operation: Air carrier
- Aircraft: [N406KZ](https://openairdocs.org/aircraft/N406KZ), registered now
- Make and model: Boeing 747-4KZF
- Registry model: [Boeing 747-4KZF](https://openairdocs.org/model/boeing-747-4kzf) (OpenAirDocs)
- Aircraft serial: 36133
- Aircraft time: 39,768 hours, 8,048 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Controller
- Part number: 79275515
- Part serial: 2008030327
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: CL
- 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/UIEA2020040600707

## Discrepancy

#4 ENG BLEED OVERHEAT MESSAGE(<P>REMOVED AND REPLACED #4 PRV AND #4 PRV CONTROLLER AND THEN PERFORMED OPERATIONAL CHECK PER AMM 36-11-19/401 AND AMM 36-11-20/401 (PRV OFF PART: PN 802170-12, SN 98080594).</P>)

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