# SDR YADA20170727001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2017
- Submitted: July 28, 2017
- Operation: Air carrier
- Aircraft: N268SL
- Make and model: Beech 1900C
- Registry model: [Beech 1900C](https://openairdocs.org/model/beech-1900c) (OpenAirDocs)
- Aircraft serial: UC68
- Aircraft time: 23,987 hours, 30,641 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Indication Sys
- Condition: Malfunctioned
- Location: Navigational
- Stage of operation: CL
- 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/YADA20170727001

## Discrepancy

AFTER TAKEOFF, THE AIRCRAFT EXPERIENCED A GPS, VOR, AND ADF ERROR THAT LASTED APPROXIMATELY 7-8 MINUTES. THE COURSE LINE ON THE NR 2 GPS WAS OFF TO THE RIGHT BY APPROXIMATELY 2 MILES FROM THEIR POSITION. THE NR 1 GPS WAS INDICATING A COURSE LINE IN THE OPPOSITE DIRECTION. NEITHER COMPASS WOULD LINE UP WITH GPS.  ADF AND VOR WOULD NOT ACQUIRE.

---
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.