# SDR UIEA2019112095932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2019
- Submitted: November 26, 2019
- Operation: Air carrier
- Aircraft: [N1487A](https://openairdocs.org/aircraft/N1487A), registered now
- Make and model: Boeing 767-31K
- Registry model: [Boeing 767-31K](https://openairdocs.org/model/boeing-767-31k) (OpenAirDocs)
- Aircraft serial: 28865
- Aircraft time: 86,371 hours, 17,577 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Transducer
- Part number: 38760855
- Condition: Failed
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019112095932

## Discrepancy

APU INOP.(<P>TRANSFERRED TO MDDR #120796 PER MEL 49-11-01A, CAT 'C,' DUE DATE: 28NOV19. MCC NOTIFIED AND PLACARDS INSTALLED.</P><P>LP 1113302 - M4: STARTED APU AND PERFORMED BITE TEST, NO FAULTS NOTED. RAN L AND R PACKS, AND WITH LT PACK ONLY ON, THE DUCT PRESSURE SURGES. REQUIRES FURTHER TROUBLESHOOTING IAW B767-300 FIM 49-11 FT 987. </P><P>LP 1113320 - M4: REMOVED & REPLACED TOTAL PRESSURE TRANSDUCER (OFF PART: PN: 3876084-2, SN: NSN) & DIFF PRESSURE TRANSDUCER. OPS CHECK COMPLETE, NO DEFECTS NOTED AT THIS TIME IAW AMM 49-53-02 AND AMM 49-53-04. THIS CLEARS DMI 120796. PLACARDS REMOVED AND MCC NOTIFIED.</P>)

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