- Difficulty date
- July 20, 2012
- Submitted
- July 24, 2012
- Operation
- Air carrier
- Make and model
- Boeing 7378Q8
- Aircraft serial
- 32799
- Aircraft time
- 18,957 hours, 7,362 cycles
- Part
- Valve
- Part number
- 32895625
- Condition
- Inoperative
- Location
- Precooler
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
20 PSI DUCT PRESSURE SPLIT AT FL350 IN CRUISE. LEFT INDICATING 17 PSI. RT INDICATING 37 PSI. TROUBLESHOT IAW FIM 36-10 TASK 807/906 AMM 36-11-00-700-801. FOUND PRE-COOLER VALVE INOPERATIVE. REMOVED AND REPLACED PRE COOLER CONTROL VALVE IAW AMM 36-17-02. OPS CHECKED NORMAL.