SDR AALA20160902007

Service difficulty report · Sensor · Boeing 737823

Difficulty date: September 2, 2016
Submitted: September 6, 2016
Operation: Air carrier
Aircraft: N918NN
Make and model: Boeing 737823
Aircraft serial: 33228
Aircraft time: 11,605 hours, 4,612 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Sensor
Condition: Faulty
Location: Te Flaps
Stage of operation: AP
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

DURING APPROACH, WHEN SELECTING FLAPS 25 DEGREES THE FLAPS STOPPED AT 22 DEGREES AND WOULD NOT EXTEND ANY FURTHER. EMERGENCY DECLARED. AIRCRAFT WAS GROUNDED. ACCOMPLISHED FSEU BITE IAW AMM TASK 27-51-00-810-801 WITH NO EXISTING FAULTS FOUND. FAULT HISTORY SHOWS INTERMITTENT FAULT MESSAGE 27-53279 LEFT TRAILING EDGE FLAP SENSOR. REMOVED AND REPLACED LEFT FLAP POSITION TRANSMITTER IAW AMM 27-58-01. FLAP OPERATION AND INDICATIONS NORMAL.