Service difficulty report · Sensor · Boeing 737890

Difficulty date
April 17, 2013
Submitted
April 18, 2013
Operation
Air carrier
Aircraft
N535AS
Make and model
Boeing 737890
Aircraft serial
35200
Aircraft time
8,724 hours, 2,560 cycles
Engine
Cfmint CFM567B27
Part
Sensor
Part number
3205490050
Part serial
EM170296U
Condition
Failed
Location
Nr 1 Engine
Part time
9,863 hours, 3,416 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DIAGNOSTICS REPORTS NR 1 ENGINE IS SENDING INTERMITTENT OIL PRESSURE ALERTS. ALL WITHIN NORMAL EXPECTED RANGE. ACCOMPLISHED TSR. PERFORMED AVM BITE IAW 77-31-00-970-803-F00. FOUND N2 SENSOR FAILED ON NR 1 ENG 31 FAULTS. REMOVED AND INSTALLED NEW NR 1 ENG N2 SENSOR REF 77-11-02. GROUND RAN NR 1 ENGINE REF 71-00-00-800-F00. PERFORMED AVM BITE AND NO FAULTS LOGGED.