Narrative:

En route, passenger brought to the crew's attention what appeared to be a crack on the left wing forward of the ground spoiler leading edge. We communicated through dispatch with maintenance and engineering. We at first considered continuing. Then a passenger explained the crack had been growing. Added to that new concern was the worry if the panel or part broke off might damage the engine. Additionally, if we continued on without having it inspected how might this be looked at in the press? These concerns in total without knowing the nature of the crack, caused me to decide to declare an emergency and land in ZZZ which was accomplished. A soft overweight landing at 135500 pounds was accomplished.

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Original NASA ASRS Text

Title: PAX ABOARD MD80 ADVISES FLT CREW OF A CRACK IN THE UPPER SKIN OF THE L WING. FLT CREW DECLARED EMER AND DIVERTED TO THE NEAREST SUITABLE ARPT WHEN TOLD THE CRACK WAS GROWING.

Narrative: ENRTE, PAX BROUGHT TO THE CREW'S ATTN WHAT APPEARED TO BE A CRACK ON THE L WING FORWARD OF THE GND SPOILER LEADING EDGE. WE COMMUNICATED THROUGH DISPATCH WITH MAINT AND ENGINEERING. WE AT FIRST CONSIDERED CONTINUING. THEN A PAX EXPLAINED THE CRACK HAD BEEN GROWING. ADDED TO THAT NEW CONCERN WAS THE WORRY IF THE PANEL OR PART BROKE OFF MIGHT DAMAGE THE ENG. ADDITIONALLY, IF WE CONTINUED ON WITHOUT HAVING IT INSPECTED HOW MIGHT THIS BE LOOKED AT IN THE PRESS? THESE CONCERNS IN TOTAL WITHOUT KNOWING THE NATURE OF THE CRACK, CAUSED ME TO DECIDE TO DECLARE AN EMER AND LAND IN ZZZ WHICH WAS ACCOMPLISHED. A SOFT OVERWT LNDG AT 135500 LBS WAS ACCOMPLISHED.

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.