# SDR ASAA2019090230577

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2019
- Submitted: September 4, 2019
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 20,537 hours, 6,701 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019090230577

## Discrepancy

AT CRUISE VNAV DISCONNECT DISPLAYED IN THE FMC SCRATCHPAD AND A/T LIMIT INDICATED ON UPPER DU. ALL VERTICAL PROFILE DATA IN FMC DELETED. GROUNDED - YES. ACCOMPLISHED FIM 22-32 TASK 815. NO CURRENT FAULTS NOTED. ACCOMPLISHED ADIRS BITE PER FIM 34-21 TASK 801. NO CURRENT FAULTS NOTED. ACCOMPLISHED EEC BITE PER FIM 73-00 TASK 801. NO CURRENT FAULTS NOTED.

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