# SDR ASAA2018061325063

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2018
- Submitted: June 15, 2018
- Operation: Air carrier
- Aircraft: [N494AS](https://openairdocs.org/aircraft/N494AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41729
- Aircraft time: 9,428 hours, 3,111 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018061325063

## Discrepancy

VTK FLAG SHOWS ON CAPTAINS SIDE. INTERMITTENT LANDING ALT EXTINGUISH, FMC SELECTION GOES AWRY AND GND PROX INOP APPEARS. EVERY 5 MINUTES EVERYTHING RESTORES THEN FAILS AGAIN. GROUNDED - YES. PERFORMED FIM 34-61TASK 836. OPS GOOD. NO HISTORY LAST 30 DAYS.

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