# SDR 251TR0003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2002
- Submitted: July 15, 2002
- Operation: Air carrier
- Aircraft: N251TR
- Make and model: Boeing 737228
- Aircraft serial: 23792
- Aircraft time: 29,444 hours, 24,332 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Vane
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/251TR0003

## Discrepancy

Reference DMI #0707002.  Auto pilot V/S mode reverts to LVL change uncommanded.  Alpha vane replaced.  See item #1 log page 09871, test C/W I/A/W ch. 22-11-381, ops chk. good.  This clears DMI 0707002.  Placard removed.

---
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.