Service difficulty report · Sensor · Boeing 737823

Difficulty date
June 21, 2019
Submitted
June 24, 2019
Operation
Air carrier
Aircraft
N939AN
Make and model
Boeing 737823
Aircraft serial
30083
Aircraft time
55,510 hours, 23,017 cycles
Part
Sensor
Part number
S233T9135
Part serial
3574
Condition
Unreliable
Location
Zone 100 - Fuse
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

AIRCRAFT WAS GROUNDED: PILOT REPORTS SPD LIM FLAG IN VIEW ON CA SIDE CAME ON AFTER TAKEOFF AND STAYED ON ENTIRE FLIGHT, STALL WARNING STICK SHAKER CAME ON AT LEAST 10 TIMES IN FLIGHT FOR A FEW SECONDS EACH TIME. ALSO, FLT CONT LIGHT ON AND AUTO SLAT FAIL STAY ON. MC COULD BE RESET. MAINTENANCE ACCOMPLISHED FIM TASK 27-32-00 DUE TO MESSAGE 27-31026. STALL SYSTEM TEST IAW AMM 27-32-00. TEST GOOD. SMYD COMPUTER BITE COMPUTER 1 AND 2 NO EXISTING FAULTS. DEU SELF TEST IAW FIM 31-62-00. TEST PASSED. MAINTENANCE PERFORMED NUMBER 1 SMYD BITE. CODE 27-31004 DISPLAYED. REPLACED LEFT AOA VANE IAW AMM 34-21-05.