What was found
LT HYDRAULIC PRESSURE SWITCH (S9) FAILED IN FLIGHT, RESULTING IN LOSS OF HYDRAULIC FLUID AND FAILURE OF BOTH LT AND RT HYDRAULIC PUMPS. NECESSITATED A FLIGHT DIVERSION TO AN ALTERNATE AIRPORT WITH AN EMERGENCY DECLARATION. (K)
- Difficulty date
- January 29, 2008
- Submitted
- February 25, 2008
- Operation
- General aviation
- Aircraft
- N444MW
- Make and model
- Lear 45LEAR
- Aircraft serial
- 131
- Engine
- Garrtt TFE731*
- System (JASC)
- 2915 · Hydraulic Pressure Relief Valve, Main
- Part
- Pressure Switch
- Part number
- 7629001004001
- Condition
- Failed
- Location
- Hydraulic Sys
- Part time
- 2,127 hours
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.