What was found
AIR TURN BACK, DECLARED EMER & A SYS HYD PRESS WENT TO 1200 PSI ON CLIMB OUT, THEN TO 200 PSI BY LANDING, EMER DECLARED. FOUND O RING ON A HYD SYS TRANSMITTER LEAKING. REPLACED A SYS PRESS TRANSMITTER O RING IAW MM.
- Difficulty date
- December 9, 2015
- Submitted
- December 11, 2015
- Operation
- Air carrier
- Aircraft
- N399WN
- Make and model
- Boeing 7373H4
- Aircraft serial
- 27693
- Aircraft time
- 65,992 hours, 53,252 cycles
- System (JASC)
- 2932 · Hydraulic Pressure Sensor
- Part
- O-Ring
- Part number
- 623337
- Condition
- Leaking
- Location
- Hydraulic Sys
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- K, J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.