# SDR 250TR0001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2002
- Submitted: April 16, 2002
- Operation: Air carrier
- Aircraft: N250TR
- Make and model: Boeing 737-2K5
- Registry model: [Boeing 737-2K5](https://openairdocs.org/model/boeing-737-2k5) (OpenAirDocs)
- Aircraft serial: 22597
- Aircraft time: 46,152 hours, 25,386 cycles
- System (JASC): [2220 · Speed-Attitude Correction System](https://openairdocs.org/jasc/2220)
- Part: Receiver
- Part number: 959960714945
- Part serial: 4092AND2277
- Stage of operation: CL
- 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/250TR0001

## Discrepancy

MCP panel @ 7000`, engage PDC A/S bug goes to 310K. Speed mode would not engage. When flaps select to 5 auto pilots kick off, would not re-engage. R&R both radio altimeters.

---
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.