# SDR YENA2021101300676

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 2021
- Submitted: October 13, 2021
- Operation: Air carrier
- Aircraft: [N923JB](https://openairdocs.org/aircraft/N923JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 05960
- Aircraft time: 30,020 hours, 5,796 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: EVT3454HC
- Part serial: 164900303
- Condition: Failed
- Location: E/E Bay
- Part time: 46,281 hours, 14,174 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2021101300676

## Discrepancy

FLT # 578, SFO-FLL. AT CRUISE SMELT ELECTRICAL FUMES AND HEARD SQUEAL. ISOLATED THE BLOWER BY GOING TO OVERRIDE ON EXTRACT. SMELL DISSIPATED. THERE WAS SOME VIBRATION NEAR EXTRACT FAN. AFTER LANDING EXTRACT FAN LOUDER ; REMOVED AND REPLACED AVIONICS FAN 18HQ AMM 21-26-51. OPS CHECK GOOD. A/C GOOD FOR SVC.

---
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.