What was found
FLT 130 JFK-BUF ON FINAL APPROACH INTO BUF "SLAT FAIL" EICAS MESSAGE WHEN SLAT/FLAPS SELECTED TO POS 1 LANDING UNEVENTFUL. BUF MX PERFORMED AMM FIM TASK 27-83-00-810-814A FOUND TO BE SF-ACE TRANSITORY CONDITION OPS CHECK GOOD. AFTER NEXT FLIGHT IN BOS, MX PERFORMED SLAT SYSTEM TROUBLESHOOTING IAW AMM FIM 17-83-00-810-A00 AND FOUND FAULT CODE 27831005ACE AND O/B LEFT WING (3/4) SKEW SENSOR TO FAIL OPS TEST. REMOVED AND REPLACED LEFT WING O/B SKEW SENSOR PER JETBLUE TASK CARD E/C190-27-0023-01 AND AMM 27-83-01, OPS CHECK GOOD.