# SDR AALA202603240681

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2026
- Submitted: March 24, 2026
- Operation: Air carrier
- Aircraft: [N924AN](https://openairdocs.org/aircraft/N924AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29525
- Aircraft time: 73,421 hours, 31,216 cycles
- Engine: Cfmint CFM567B20
- Engine time: 44,277 hours, 18,901 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Power Loss
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, R, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202603240681

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: LEVELING OFF AT FL310 NR 1 ENGINE N1 DIPPED AND SURGED AT LEAST 3 TIMES. THIS WAS ACCOMPANIED BY A BANGING NOISE HEARD IN THE COCKTAIL. FLIGHT ATTENDANT REPORTED SEEING SPARKS COMING FROM THE NR 1 ENGINE AS WELL. ALSO HEARD AN AUDIBLE BANGING SOUND, AND REPORTED FEELING THE CABIN FLOOR VIBRATE. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT ORD.  (OPEN).

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