# SDR AC2A2021102913902

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2021
- Submitted: October 29, 2021
- Operation: Air carrier
- Aircraft: [N639NA](https://openairdocs.org/aircraft/N639NA), registered now
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 41326
- Aircraft time: 6,200 hours, 10,639 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Cooling Fan
- Part number: 109071846103
- Part serial: 121771
- Condition: Inoperative
- Part time: 6,200 hours, 10,639 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: P
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2A2021102913902

## Discrepancy

RIGHT SIDE AVIONICS COOLING FAN DOES NOT COME ON WITH NO COCKPIT INDICATION OF FAN FAILURE. AS PER DESIGN, A DEDICATED CAS CAPTION NOSE FAN 1 OFF SHOULD HAVE BEEN DISPLAYED ON MFD.

---
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.