Service difficulty report · Sensor · Boeing 7378

Difficulty date
August 6, 2023
Submitted
August 9, 2023
Operation
Air carrier
Aircraft
N27276
Make and model
Boeing 7378
Aircraft serial
64611
Aircraft time
1,969 hours, 753 cycles
Part
Sensor
Part number
90004213
Part serial
46412
Condition
Faulty
Location
Flap Skew
Part time
1,939 hours, 743 cycles
Stage of operation
TO
How discovered
O
Nature of condition
F, O
Precautionary procedure
C

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

What was found

T/O CONFIG LITE ON T/O ROLL IN LOW SPEED REGIME. TRAILING EDGE FLAP ASYMMETRIC. BITE CHECKED FSEU, FAULT MESSAGE: 27-53254,FLAP 5 SKEW SENSOR. FOUND VALUES OUT OF LIMIT FLAPS UP READ -88.0 CKD WIRING REF WDM 27-53-21 PWR AT PIN 2 AND GOOD GRD PIN 1. NEEDS #5 SKEW SENSOR T529. NSU CLE. REMOVED AND REPLACED # 5 SKEW SENSOR.AS PER AMM 27-59-01-730-801. SKEW SENSOR OPS CHECK GOOD. NO FAULTS NOTED, OK TO CONTINUE.. ADD FAULT:27-53254 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1153261 SN OFF 0432 IPC REFERENCE # SENSOR, FLAP S OFF 29-2759-9-0003 6412 ON 29-2759-9-0003 0432

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