# SDR P5CA0300892

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 6, 2003
- Submitted: July 7, 2003
- Operation: Air carrier
- Aircraft: N355MC
- Make and model: Boeing 747341
- Aircraft serial: 23395
- Aircraft time: 551,649 hours, 10,392 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Switch
- Part number: 35EN234
- Condition: Malfunctioned
- Location: Horiz Stab
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0300892

## Discrepancy

RETURNED TO BLOCKS - TAKEOFF WARING HORN SOUNDED WHEN THROTTLES ADVANCED - UNABLE TO SELECT APL NOSE DOWN ON STAB TRIM GREEN BAND SELECTOR (TRIM 3.5).  REPLACED STAB SWITCH S334.

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