# SDR QXEA2021100800466

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2021
- Submitted: October 8, 2021
- Operation: Air carrier
- Aircraft: N403QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4037
- Aircraft time: 46,343 hours, 49,166 cycles
- System (JASC): [6110 · Propeller Assembly](https://openairdocs.org/jasc/6110)
- Part: None
- Part number: C18117AA
- Part serial: 299
- Condition: None
- Location: Zone 200
- Part time: 41,412 hours, 43,078 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: E
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2021100800466

## Discrepancy

DURING CLIMB, NOTICED BOTH YOKES VIBRATING EXCESSIVELY, SIMILAR TO TAXIING ON ROUGH SURFACE. WHEN FINGER PRESSURE WAS APPLIED TO LEFT SIDE OF BOTH YOKES VIBRATION WAS PRONOUNCED. FINGER PRESSURE ON RIGHT SIDE OF YOKE RESULTED IN NO VIBRATION. AUTOPILOT ON WHOLE TIME. VIBRATION REMAIN @ 900 & 850 RPM. VIBRATION DIMINISHED DURING CRUISE @ HIGHER SPEEDS. REMOVED FROM SERVICE.  C/W AIRFRAME INSPECTION FOUND #1 ENGINE AFT OUTBOARD EXHAUST FINGERNAIL BRACKET BROKEN. REPLACED IAW RD 8/4-54-26 11/1. C/W 6 BLADE RETORQUE AND PROP BALANCE. A/P PLACED ON MEL DUE TO ROLL SERVO CHATTER. MEL CLEARED BY REPLACING THE ROLL ACTUATOR. PERFORMED OPERATION CHECK FLIGHT AND PASSED. RETURNED TO SERVICE.

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