# SDR 99ZZZX3173

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N12129](https://openairdocs.org/aircraft/N12129), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17261827
- Engine: Lyc O320E2D
- System (JASC): [7310 · Engine Fuel Distribution](https://openairdocs.org/jasc/7310)
- Part: Line
- Condition: Chafed
- Location: Nr 2 Cylinder
- Part time: 5,174 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3173

## Discrepancy

DURING REMOVAL OF THE NR 2 CYLINDER, MECHANIC NOTED B-NUT ON THE NR 2 CYLINDER FUEL LINE LOCATED AT THE T-FITTING WAS WORN.  THE B-NUT HAD BEEN CHAFING AGAINST THE STARTER MOTOR CABLE AND HAD WORN THE FUEL LINE NUT TO AN UNSERVICEABLE CONDITION.  REPLACED B-NUT AND REPOSITIONED LINE.

---
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.