# SDR 2002FA0000732

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2002
- Submitted: June 24, 2002
- Operation: General aviation
- Aircraft: N166ME
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S8446
- Engine: Lyc IO360A1A
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Alternator
- Part number: 991059111RX
- Part serial: A157762
- Condition: Malfunctioned
- Location: Engine
- Part time: 721 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2002FA0000732

## Discrepancy

ALTERNATOR MALFUNCTIONED.  NO OUTPUT.  DISASSEMBLED, FOUND ONE BRUSH WORN AND OTHER MISSING.  I SUSPECT BRUSH WAS WORN TO THE POINT THAT THE SPRING FOUND ITS WAY TO THE COMMUTATOR, WRAPPING ITSELF AROUND IT.  BRUSH NOT LOCATED.

---
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.