Narrative:

Landing on runway 27L spoiler deployed normally then retracted. The airplane skipped and became airborne again. After landing again, the spoiler had to be deployed and held deployed manually. After clearing the runway we noticed the 'autospoiler do not use' light on. This light was not illuminated during the approach. Once we xferred power to the APU, the light went out. Callback conversation with reporter revealed the following information: the reporter stated the cause of the spoilers to immediately retract after deploying is unknown as maintenance did not advise the crew. The reporter said incidents of this type of spoiler action are sometimes reported when landing on a wet runway and hydroplaning occurs.

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Original NASA ASRS Text

Title: AN MD80 ON LNDG, THE GND SPOILERS DEPLOYED THEN IMMEDIATELY RETRACTED AIRPLANE WENT AIRBORNE AGAIN AND SPOILERS DEPLOYED MANUALLY. CAUSE OF AUTOSPOILER FAILURE UNKNOWN.

Narrative: LNDG ON RWY 27L SPOILER DEPLOYED NORMALLY THEN RETRACTED. THE AIRPLANE SKIPPED AND BECAME AIRBORNE AGAIN. AFTER LNDG AGAIN, THE SPOILER HAD TO BE DEPLOYED AND HELD DEPLOYED MANUALLY. AFTER CLRING THE RWY WE NOTICED THE 'AUTOSPOILER DO NOT USE' LIGHT ON. THIS LIGHT WAS NOT ILLUMINATED DURING THE APCH. ONCE WE XFERRED PWR TO THE APU, THE LIGHT WENT OUT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE SPOILERS TO IMMEDIATELY RETRACT AFTER DEPLOYING IS UNKNOWN AS MAINT DID NOT ADVISE THE CREW. THE RPTR SAID INCIDENTS OF THIS TYPE OF SPOILER ACTION ARE SOMETIMES RPTED WHEN LNDG ON A WET RWY AND HYDROPLANING OCCURS.

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.