Service difficulty report · Sensor · Boeing 737824

Difficulty date
January 14, 2023
Submitted
January 16, 2023
Operation
Air carrier
Aircraft
N73275
Make and model
Boeing 737824
Aircraft serial
31593
Aircraft time
66,164 hours, 22,878 cycles
Part
Sensor
Part number
0861FL1
Condition
Defective
Location
Aoa Left
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

LOST CAPT VERTICAL F/D SPD LIM INDICATED ON PFD ALL SPD INDS AGG REED THEN LEFT STICKSHAKER LOG UPDATED AS INFO CONTAINED ON TOCS: BITE PERFORMED, SMYD PERFORMED LEFT AND RIGHT ADIRS BITE TEST, NO FAULTS FOUND. ...BITE ALSO SHOWED MULTIPLE ALTITUDE DISAGREE FAULTS. (REF LP 3566515 FOR AOA SENSOR R/R. )ALSO PERFORMED BITE OF BOTH FAULT 27-31004 L AOA SENSOR. PERFORMED DEU 1&2 BITE TEST, FOUND MULTIPLE AIRSPEED DISAGREE SYMD''S NO EXISTING FAULTS PRESENT. ALSO CK''D BOTH DEU''S ,ALSO NO FAULTS ON THE LAST 7 LEGS DEU 1&2. MAINT MESSAGES 31-65050 & CURRENT FAULTS NOTED. 31-65060. NEEDS FURTHER T/S. REF LP 3566515, (R/R OF LEFT AOA SENSOR) PERFORMED OPS CHECK OF AMM 27-83-00. OPS CHECK/FUNCTIONAL CHECK GOOD. NO DEFECTS OR LEFT AOA SENSOR AS PER AMM 34-21-05. NO DEFECTS OR FAULTS NOTED FAULTS NOTED AT THIS TIME. AT THIS TIME. ALL ADIRU AND SMYD CHECKS OK AND NO CURRENT FAULTS. PERFORMED FUNCTION CHECK ON LE AUTOSLAT SYSTEM AS PER