# SDR SCNA20260916400

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2026
- Submitted: September 16, 2026
- Operation: Air carrier
- Aircraft: [N820SY](https://openairdocs.org/aircraft/N820SY), registered now
- Make and model: Boeing 737-8FH
- Registry model: [Boeing 737-8FH](https://openairdocs.org/model/boeing-737-8fh) (OpenAirDocs)
- Aircraft serial: 39951
- Aircraft time: 33,717 hours, 11,050 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Vibration
- Location: Nr 1
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SCNA20260916400

## Discrepancy

NUMBER 1 ENGINE VIBRATION AT 3.9 IN CLIMB AND 3.3 DURING CRUISE.  PERFORMED VIBRATION SURVEY TEST 7 IAW AMM 71-00-00-00-700-814-F00, HIGH VIBRATION OF 3.1, PERFORMED TEST 14B AVM FAN BALANCE TRIM, REPEAT VIBRATION SURVEY TEST 7, HIGH VIBRATION OF .5 AT T/O POWER .3 AT OTHER SETTINGS, OK FOR SERVICE. REF AMM TASK 71-00-00-750-803-F00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.