Service difficulty report · Slat System · Boeing 737824

Difficulty date
November 18, 2021
Submitted
November 18, 2021
Operation
Air carrier
Aircraft
N77510
Make and model
Boeing 737824
Aircraft serial
32828
Aircraft time
44,275 hours, 15,280 cycles
Part
Slat System
Condition
Faulted
Stage of operation
NR
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

*EMERGENCY DECLARED*LEADING EDGE FLAPS AND SLATS DO NOT EXTEND DURING NORMAL SYSTEM OPERATION FLAP POSITION INDICATOR STOPPED AT 10 DEGREES WITH HANDLE AT 15.DEBRIEF FROM CREW. PILOTS REPORTED THAT WHEN ATTEMPING TO LAND THEY SELECTED FLAPS 15 BUT FLAPS WOULD NOT EXTEND BEYOND 10. CHECKLIST WAS FOLLOWED AND LANDING WAS COMPLETED WITH FLAPS AT 10 AND FLAP INHIBIT SWITCH ACTIVATED.TS AS PER FIM TASK27-51-00-810-836. BITE TEST OF FSEU AS PER TASK27-51-00-810-801 NO CURRENT FAULTS. NOTED FAULTS IN HISTORY FLAP SKEW, FLAP 7 SKEW, AND FLAP 8 SKEW RECORDED DURING FLIGHT LEG #042. PER FIM RAN FLAPS USING PRIMARY CONTROLS AS PER AMM TASK27-51-00-860-801, NO FAULTS NOTED. BECAUSE OF FAULTS IN HISTORY ACP''D TE ASYMMETRY INDICATION GROUND TEST AS PER TASK27-51-00-810-802 AND SKEW DETECTION SYSTEM FUNCTIONAL TEST AS PER TASK27-59-00-730-801. ALL TEST GOOD AND SKEW SENSOR INPUTS WITHIN TEST LIMITS. AIRCRAFT IS OK FOR SERVICE.