# SDR 2020FA0000376

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2020
- Submitted: August 18, 2020
- Operation: General aviation
- Aircraft: [N366QS](https://openairdocs.org/aircraft/N366QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500268
- Aircraft time: 4,502 hours, 3,503 cycles
- System (JASC): [5520 · Elevator Structure](https://openairdocs.org/jasc/5520)
- Part: Balance Weight
- Condition: Corroded
- Location: Lt Elevator
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2020FA0000376

## Discrepancy

DURING ACCOMPLISHMENT OF EMBRAER SB 505-55-0004 REV 01 (DATED 06/24/2020), WE NOTED THE FOLLOWING LEFT ELEVATOR MASS BALANCE WEIGHT BELOW TOLERANCE: P/N PE915109-L33 (1 EACH) UNDER THE WEIGHT LIMITS (81 GRAMS), AS PRESCRIBED BY THE SB (MINIMUM 84 GRAMS).  THE WEIGHT HAS BEEN REPLACED WITH A NEW MASS WEIGHT AND THE ELEVATOR BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED.  THE ELEVATOR WAS RE-IDENTIFIED TO P/N 505-11079-639, AS PER SERVICE BULLETIN INSTRUCTIONS.  WE ALSO NOTED THE LEFT AILERON MASS BALANCE WEIGHT P/N PE915109-L31 WAS UNDER THE WEIGHT LIMITS (1739 GRAMS) AS PRESCRIBED BY THE SB (MINIMUM 1787 GRAMS), THE MASS WEIGHT HAS BEEN REPLACED WITH A NEW MASS WEIGHT AND THE AILERON BALANCING WAS PERFORMED WITH NO FURTHER DEFECTS NOTED.  THE AILERON WAS RE-IDENTIFIED TO P/N 505-14736-619, AS PER SB INSTRUCTIONS.  THIS REPORT COMPLIES WITH FAA 14 CFR PART 135 OPERATOR’S GMM REQ.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.