# SDR 2007F00052

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2007
- Submitted: September 4, 2007
- Operation: General aviation
- Aircraft: N403VA
- Make and model: Dorner DO228202
- Aircraft serial: 8171
- Aircraft time: 15,416 hours, 22,951 cycles
- Engine: Garrtt TPE33110T
- Propeller: Hartzl HCB4TN5
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Tach Generator
- Part number: AG34
- Part serial: D34203
- Condition: False Indication
- Location: Left Engine
- Stage of operation: CR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007F00052

## Discrepancy

LEFT RPM INDICATION ABNORMAL PERFORMED PRECAUTIONARY SHUTDOWN.  INSPECTION FOUND TACH GENERATOR SHAFT BROKEN.  REMOVED AND REPLACED TACH GENERATOR IAW AMM 77-11-03.  ENGINE GROUND PERFORMANCE RUN C/W AND PASSED.  ALL PARAMETERS NORMAL.  AIRCRAFT APPROVED FOR RETURN TO SERVICE.

---
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.