# SDR ASAA2020030332342

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2020
- Submitted: March 4, 2020
- Operation: Air carrier
- Aircraft: N302AS
- Make and model: Boeing 737990
- Aircraft serial: 30017
- Aircraft time: 59,638 hours, 24,828 cycles
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Spring
- Condition: Broken
- Location: Centering Unit
- Component: Centering Unit
- Component part number: 65C2546523
- Stage of operation: TO
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020030332342

## Discrepancy

ON THE GROUND AND DURING TAKE OFFS AND LANDINGS THE ELEVATOR FEEL ON PULLING AND PUSHING THE CONTROL WHEEL YOKE WAS UNUSUALLY LIGHT AND MUSHY. WE NEVER GOT A FEEL DIFF PRESS LIGHT. ALL HYDRAULIC PRESSURES AND QUANTITIES INDICATED NORMAL. GROUNDED - YES. FOUND FEEL & CENTERING SPRING BROKEN. REMOVED AND REPLACED ELEVATOR FEEL AND CENTERING UNIT REF B737-900 AMM 27-31-64/401.-000-801. INSTALLATION TEST (FEEL FORCE SYSTEM TEST) PASS REF AMM 27-31-00-700-812.

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