# SDR QXEA2019122300470

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2019
- Submitted: December 23, 2019
- Operation: Air carrier
- Aircraft: [N430QX](https://openairdocs.org/aircraft/N430QX), registered now
- Make and model: Bombdr DHC8402
- Aircraft serial: 4163
- Aircraft time: 28,130 hours, 30,200 cycles
- System (JASC): [3440 · Independent Position Determining System](https://openairdocs.org/jasc/3440)
- Part: Warning Message
- Condition: False Activation
- Stage of operation: TO
- How discovered: O
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2019122300470

## Discrepancy

UPON ROLLING ONTO THE RUNWAY FOR TAKEOFF, "RA1 FAIL" WAS ANNUNCIATION ON THE ED. TAKEOFF ABORTED. REMOVED FROM SERVICE. SYSTEM PLACED ON MEL. CLEARED BY PERFORMING Q400 FIM 34-44-00-810-809. NO PRESENT FAULTS, PERFORMED RA1 TRANSCEIVER OPS TEST REF Q400 MTC 6344401. OPS TEST GOOD, NO FAULTS OR DEFECTS NOTED. A/C IS CAT III, COCKPIT PLACARD READS CAT III, MTX CTRL 46053 NOTIFIED, CLEAR MEL, PLACAREDS REMOVED, C/B PUSHED IN. RETURNED TO SERVICE. COULD NOT DUPLICATE. NO PARTS REPLACED.

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