# SDR ASAA2016071917426

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2016
- Submitted: July 21, 2016
- Operation: Air carrier
- Aircraft: [N448AS](https://openairdocs.org/aircraft/N448AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36356
- Aircraft time: 1,180 hours, 384 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Autopilot Sys
- Condition: Malfunctioned
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016071917426

## Discrepancy

IN LNAV/VNAV MODE, AUTOPILOT ENGAGED, FAILED TO CAPTURE WAYPOINT ALTITUDE AND AIRSPEED ON ARRIVAL.  ON APPROACH, APPROACH MODE WOULD NOT ARM.  AUTOPILOT A USED FOR ALL.  ACFT GROUNDED.  AFTER ARRIVAL FOUND NR 2 NAV HAD VOR FREQ PREVENTING APPROACH MODE.  NO FAULTS LOGGED IN FMC OR DFCS BITE.  ACCOMPLISHED LAND VERIFY, IAW AMM 22-11-00, TEST PASS.

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