# SDR UIEA2020122202609

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2020
- Submitted: December 24, 2020
- Operation: Air carrier
- Aircraft: [N1489A](https://openairdocs.org/aircraft/N1489A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 27206
- Aircraft time: 108,702 hours, 21,634 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 97980612
- Part serial: 3675
- Condition: Malfunctioned
- Location: Pneumatic Sys
- Stage of operation: NR
- 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/UIEA2020122202609

## Discrepancy

APU PNEUMATICS SURGING.  TRANSFERRED TO MEL 49-11-01-01.  MDDR NR 139876 CAT "C" DUE DATE 31DEC20.  MCC NOTIFIED.  "M" FUNCTION C/W.  REMOVED AND REPLACED APU SURGE VALVE, IAW AMM 49-53-01.  OPERATIONS CHECK GOOD.  THIS CLEARS MDDR NR 139876.

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