# SDR P5CA2022012400013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2022
- Submitted: January 27, 2022
- Operation: Air carrier
- Aircraft: N643GT
- Make and model: Boeing 767-3JHF
- Registry model: [Boeing 767-3JHF](https://openairdocs.org/model/boeing-767-3jhf) (OpenAirDocs)
- Aircraft serial: 37809
- Aircraft time: 23,108 hours, 5,872 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Module
- Part number: 8044012005
- Part serial: C93120008
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA2022012400013

## Discrepancy

ENG. # 2  WARNING  A RIGHT HPC  DIFFERENTIAL   PRESSURE < 20 PSI  SIGNAL  WAS NOT DETECTED .(<P>PERFORM 36-10 TASK NR 37. REMOVED/ REPLACED AIR SUPPLY BITE MODULE M129 & TEST OK.  AMM 36-23-01 ENG #2 RUN UP; BLEED SYS OK.</P>)

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