# SDR HEEA0013180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N721MB](https://openairdocs.org/aircraft/N721MB), registered now
- Make and model: Bolkms BO105S
- Aircraft serial: S752
- System (JASC): [3453 · Long-Range Navigation (LORAN) System](https://openairdocs.org/jasc/3453)
- Part: Loran
- Part number: 4530103
- Condition: Failed
- Location: Cockpit
- Component: ARNAV21
- 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/HEEA0013180

## Discrepancy

WHEN SCROLLING IN AUX OR NAV MODE UNIT INTERMITTENTLY LOSES DISPLAY AND STARTS OVER.  INTERMITTENT IN CDI MODE.

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