# SDR IPXA2026052066584

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2026
- Submitted: May 20, 2026
- Operation: Air carrier
- Aircraft: [N438UP](https://openairdocs.org/aircraft/N438UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25469
- Aircraft time: 31,807 hours, 20,820 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Duct
- Condition: Loose
- Location: Zone 100
- 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/IPXA2026052066584

## Discrepancy

CABIN ALTITUDE WARNING CLIMBING THROUGH FL 225. AIR TURN BACK SECURED LOOSE DUCT AND LOOSE SUPPORT RODS AT RH PACK PLENUM MAIN DUCT. REF IPC 21-51-15-01 ITEM 215 AND 203. WILL REQUIRE ACFT PRESSURIZATION CHECK WITH BOTH PACK OPERATING.

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