# SDR UG8A21P04261349JF

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2021
- Submitted: May 11, 2021
- Operation: Air carrier
- Aircraft: [N349JF](https://openairdocs.org/aircraft/N349JF), registered now
- Make and model: Raythn HAWKER900XP
- Aircraft serial: HA0012
- Aircraft time: 5,330 hours, 3,960 cycles
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: I/O Module
- Part number: 8222065101
- Condition: Malfunctioned
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UG8A21P04261349JF

## Discrepancy

RED TRIM ANNUNCIATOR ILLUMINATED CONTINUOUSLY DURING ALL MODES OF FLIGHT, CLIMB, CRUISE AND DESCENT.  THE LIGHT WOULD ILLUMINATE SHORTLY AFTER AP WAS ENGAGED.  WE VERIFIED AIRCRAFT WAS PERFECTLY TRIMMED PRIOR.  THE AP KEPT ADDING NOSE-UP TRIM, EVEN WHEN NOT REQUIRED.  OPEN

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