SDR CALA2017081402636

Service difficulty report · Sensor · Boeing 737724

Difficulty date: August 14, 2017
Submitted: August 14, 2017
Operation: Air carrier
Aircraft: N16709
Make and model: Boeing 737724
Aircraft serial: 28779
Aircraft time: 62,471 hours, 21,694 cycles
System (JASC): 2751 · Trailing Flap Position Indicating System
Part: Sensor
Part number: 90004212
Part serial: 0758
Condition: Faulty
Location: Te Flaps
Part time: 62,471 hours, 21,694 cycles
Stage of operation: AP
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

FLAP FAILED TO EXTEND LT & RT NEEDLE GAUGE SPLIT COMPLIED WITH QRH. LANDED FLAPS UP. EMERGENCY DECLARED. ACP TS PROCEDURE FIM 27-51-00-810-826, FOUND SKEW SENSOR 4 FAILED, WITH PARAMETERS READINGS OUT OF LIMITS, AFTER FSEU INTERROGATIONS. REPLACED FLAP SKEW SENSOR POS 4 IAW AMM 27-59-01-000-8 02 AND 27-59-01-400-802, OPS CHECKED GOOD IAW AMM 27-51-00-810-802.