# SDR UIEA201811212658

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2018
- Submitted: November 21, 2018
- Operation: Air carrier
- Aircraft: [N1427A](https://openairdocs.org/aircraft/N1427A), registered now
- Make and model: Boeing 767306
- Aircraft serial: 28098
- Aircraft time: 77,960 hours, 16,463 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Warning Message
- Condition: False Activation
- Location: Duct Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA201811212658

## Discrepancy

PRIOR TO ENGINE START BOTH DUCT PRESSURES FLUCTUATE BETWEEN 15 AND 20 PSI (<P>PERFORMED OPS CHECK OF PNEUMATIC SYS IAW AMM 49-52-00 OPS CHECKED GOOD 35 PSI STEADY  WITH NO PACKS RUNNING OPS CK GOOD </P>)

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