# SDR SIMA20260528001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2026
- Submitted: May 29, 2026
- Operation: Air carrier
- Aircraft: [N770JM](https://openairdocs.org/aircraft/N770JM), registered now
- Make and model: Emb ERJ 170-100 LR
- Registry model: [EMB ERJ 170-100 LR](https://openairdocs.org/model/embraer-erj-170-100-lr) (OpenAirDocs)
- Aircraft serial: 17000025
- Aircraft time: 42,526 hours, 34,893 cycles
- System (JASC): [3130 · Data Recorders (Flight/Maintenance)](https://openairdocs.org/jasc/3130)
- Part: Cabin Pressure
- Condition: Malfunctioned
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20260528001

## Discrepancy

CABIN PRESSURE ISSUE AFTER VIBRATION FELT, CABIN ALTITUDE STARTED RISING. IT ROSE PAST 8900 CAB ALT THEN EICAS WARNING POPPED. AT 35,000 FT IN CRUISE, WE FELT VIBRATIONS COMING FROM THE LEFT SIDE. WE THEN LOOKED AT THE ENG VIB EICAS INDICATION - IT READ 1.7 ON HP. VIBRATION SOUNDED LIKE HIGH PRESSURE AIR SPUTTERING.WE DECLARED AN EMERGENCY AND DESCENDED RAPIDLY TO 10,000FT. THEN DIVERTED TO MLU. NO INJURIES LANDED SAFELY. PERFORMED BOTH ENGINE RUNS PER GE LMM 72-00-00. OPC GOOD. REF AML PG 107002214 FOR

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