# SDR FDEA2019022870507

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2019
- Submitted: February 28, 2019
- Operation: Air carrier
- Aircraft: [N298FE](https://openairdocs.org/aircraft/N298FE), registered now
- Make and model: Boeing 767-32LF
- Registry model: [Boeing 767-32LF](https://openairdocs.org/model/boeing-767-32lf) (OpenAirDocs)
- Aircraft serial: 41069
- Aircraft time: 8,053 hours, 3,350 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 211738815
- Part serial: 18K0001
- Condition: Failed
- Location: Cabin Pressure
- Part time: 436 hours, 180 cycles
- 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/FDEA2019022870507

## Discrepancy

PDIS  298     21-30  2907     26FEB19  LAX  FACT  U  LOGPAGES:3042464  ON CLIMBOUT RECEIVED " CABIN ALTITUDE " WARNING  LEVELED  OFF  ALERT WENT AWAY , AIRCRAFT  PRESSURIZED TO BELOW SEA LEVEL AND BEYOND MAX  DIFFERENTIAL PRESSURE . AIR TURN BACK   FACT 26FEB19 17:04   LAX U  PER CREW DEBRIEF CABIN ALT ALERT OCCUR IN SYSTEM 1 SWAP TO SYSTEM 2 ALERT WENT   AWAY AND WENT MANUAL. PERFORMED BITE ON BOTH CABIN PRESSURE CONTROLLERS  IAW FIM 21-31/803 NO FAULTS. USING CABIN PRESSURE SELECTED MANUALLY CYCLED   OUTFLOW VALVE WITH NO BINDING. VISUALLY WATCH OUTFLOW VALVE OPEN/CLOSE  WITH NO ISSUE. REMOVED AND REPLACED NO.1 CABIN PRESSURE CONTROLLER REF AMM 21-  31-02-04. PERFORMED BITE CHECK REF AMM 21-31-00-5. MANUALLY PRESSURIZED  REF AMM 05-51-24-2. OPS CHECK GOOD. NO FAULTS NOTED. AIRCRAFT OK FOR SERVICE.

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