# SDR UIEA2019101535709

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2019
- Submitted: October 15, 2019
- Operation: Air carrier
- Aircraft: [N499MC](https://openairdocs.org/aircraft/N499MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29260
- Aircraft time: 80,379 hours, 13,694 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Pressure Switch
- Condition: Dirty
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2019101535709

## Discrepancy

STAB TRIM DISPLAYED OUT OF GREEN BAND. NOSE DOWN BAND DID NOT ILLUMINATE WHEN INDICATOR LIGHTS TESTED.  PERFORMED GREEN BAND DISAGREE TEST PER FIM 27-41-944. STAB GREEN BAND OPS TEST NORMAL IAW MM 27-48-60-865-602. NOSE PRESSURE SWITCH CLEANED.

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