# SDR CALA2026060316791

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 1, 2026
- Submitted: June 3, 2026
- Operation: Air carrier
- Aircraft: [N209UA](https://openairdocs.org/aircraft/N209UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30215
- Aircraft time: 103,910 hours, 12,461 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Flow Sensor
- Part number: 8102304
- Part serial: 9086
- Condition: Faulty
- Location: Left
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026060316791

## Discrepancy

A/C PACK L & R EICAS CAUTION USE PACKS FAILURE AS SYMPTOM FOR A LOSS OF INFLOW CONDITION.  LEFT PACK WAS OPERATING INTERMITTENTLY. WAS SWITCHED OFF IAW NON-NORMAL PROCEDURE. UPON ARRIVAL FOUND MAINT MSG: 21-23041 PRESSURE SENSOR (L FLOW SENSOR) SIGNAL IS OUT OF RANGE IN ACTIVE, PERFORMED FIM 21-51 TASK 803 UP TO STEP G.(3). INLET SENSOR FAULT CONFIRMED.

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