Service difficulty report · Control Valve · Boeing 737890

Difficulty date
January 14, 2016
Submitted
January 20, 2016
Operation
Air carrier
Aircraft
N590AS
Make and model
Boeing 737890
Aircraft serial
35687
Aircraft time
30,839 hours, 9,363 cycles
Part
Control Valve
Part number
32895625
Part serial
8218
Condition
Failed
Location
Precooler
Part time
41,629 hours, 16,489 cycles
Stage of operation
NR
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

AT CRUISE MASTER CAUTION FOLLOWED BY A NR 2 BLEED TRIP OFF LGHT. FOLLOWED QRH RESUMED NORMAL OPS. ACFT GROUNDED. TROUBLESHOT IAW FIM 36-10, TASK 801. NO DEFECTS FOUND. NOTE: REPLACED PRECAUTIONARY NR 2 ENGINE PRECOOLER CONTROL VALVE IAW AMM 36-12-02. VERIFICATION FLIGHT SATISFACTORY.