# SDR SWIA2026090177072

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2026
- Submitted: September 4, 2026
- Operation: Air carrier
- Aircraft: [N766SK](https://openairdocs.org/aircraft/N766SK), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10232
- Aircraft time: 51,246 hours, 34,552 cycles
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Control Unit
- Part number: 272007
- Condition: Faulted
- Stage of operation: CR
- 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/SWIA2026090177072

## Discrepancy

CREW REPORTED HYD 3 LO PRESS INFLIGHT AND LOSS OF ALL HYD 3 FLUID PUMP 3A RAN FOR APPROXIMATELY 5 MINUTES PUMP 3B RAN FOR ABOUT 5 SECONDS CREW USED THE LEANDING GEAR EMERGENCY EXTENSION TO GET GEAR DOWN EMERGENCY DECLARED  (FLIGHT 4953 - FILED CLOSED)  REFERENCE AML 1982056  REFERENCE AML 1982058 FOR HYD. PUMPS AND EMERGENCY EXTENSION. INSPECTED AIRCRAFT AND FOUND LEFT WING OUTBOARD AILERON PCU LEAKING FROM MAIN PISTON SEAL. REMOVED, AND REPLACED LEFT WING OUTBOARD AILERON PCU IN REFERENCE TO AMM 27-14-01 OPS AND LEAK CHECKS GOOD AT THIS TIME. COMPLIED WITH CARD 27-900-1002-SKY AS REQUIRED OK FOR CONTINUED SERVICE.

---
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.