# SDR 9WGA2021012441101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2021
- Submitted: January 25, 2021
- Operation: Air carrier
- Aircraft: [N411SN](https://openairdocs.org/aircraft/N411SN), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48411
- Aircraft time: 75,845 hours, 15,215 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydromech Unit
- Condition: Failed
- Location: Nr 3
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9WGA2021012441101

## Discrepancy

LVL 2 HYD 3 FAIL.  WAS PRECEDED BY HYD 3 ELEV OFF AND HYD 3 QTY LOW.  PERFORMED MANUAL GEAR EXTENSION, IAW CHECK LIST.

---
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.
