B757 crew diverts to sju with leading edge slat problem.

Attributes
ACN	434302
Time
Date	199904
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : coy.vor
State Reference	FO
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : sju.tracon
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000 flight time type : 1500
ASRS Report	434302
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : flight engineer
Experience	flight time last 90 days : 160 flight time total : 9500 flight time type : 4000
ASRS Report	434303
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : eicas
Resolutory Action	flight crew : diverted to another airport flight crew : landed as precaution
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

During slat/flap extension for approach to stx, got 'leading edge slat asymmetry' EICAS message. Per our procedures, required landing at vref +30 KTS. We elected to divert to sju for longer runways and maintenance availability. Landing sju uneventful. After maintenance clearance, redispatched and departed for stx. Same problem occurred. Returned to sju uneventfully and flight was canceled.

Original NASA ASRS Text

Title: B757 CREW DIVERTS TO SJU WITH LEADING EDGE SLAT PROB.

Narrative: DURING SLAT/FLAP EXTENSION FOR APCH TO STX, GOT 'LEADING EDGE SLAT ASYMMETRY' EICAS MESSAGE. PER OUR PROCS, REQUIRED LNDG AT VREF +30 KTS. WE ELECTED TO DIVERT TO SJU FOR LONGER RWYS AND MAINT AVAILABILITY. LNDG SJU UNEVENTFUL. AFTER MAINT CLRNC, REDISPATCHED AND DEPARTED FOR STX. SAME PROB OCCURRED. RETURNED TO SJU UNEVENTFULLY AND FLT WAS CANCELED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.