# SDR AALA202210039221

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2022
- Submitted: October 3, 2022
- Operation: Air carrier
- Aircraft: [N336SR](https://openairdocs.org/aircraft/N336SR), registered now
- Make and model: Boeing 737823
- Aircraft serial: 44482
- Aircraft time: 4,581 hours, 1,791 cycles
- System (JASC): [7732 · Engine Vibration Analyzer](https://openairdocs.org/jasc/7732)
- Part: Accelerometer
- Part number: 144168000501
- Part serial: HC181345L
- Condition: Unserviceable
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202210039221

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING CLIMB OUT ABOVE FL200 SUSTAINED ENGINE 2 VIBRATIONS GREATER THAN 4.0 MAX; APPROXIMATELY 4.3 ON DESCENT; WITH POWER AT IDLE NOTICEABLE AIRFRAME VIBRATIONS. ENGINE INDICATION NORMAL. FLIGHT RETURNED TO MIA, LANDING SAFELY. REPLACED ENGINE #2 CENTER FRAME ACCELEROMETER (AALA202210039221) PER AMM 77-31-06. ACCOMPLISHED SATISFACTORY OIL DEBRIS MONITORING SYSTEM INSPECTION PER AMM 79-00-00-210-804-G00. ACCOMPLISHED SATISFACTORY SCAVENGE SCREEN PLUG INSPECTION PER AMM 79-21-04-211-801-G00. REPLACED ENGINE #2 ELECTRONIC ENGINE CONTROL (EEC) ELECTRICAL HARNESS (AALA202210038317) PER AMM 73-22-01-401. ACCOMPLISHED SATISFACTORY EEC ELECTRICAL HARNESS INSTALLATION TEST PER AMM 71-00-00-800-804-G00. ACCOMPLISHED SATISFACTORY VIBRATION AND POWER ASSURANCE RUNS PER AMM 71-00-00.

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