Narrative:

On shutdown checklist pitot tube heat may have been left on, or after deplaning, ramp personnel could have turned it on, or pitot cover may have been installed before pitot tube cooled. Pitot tube cover melted onto pitot tube. Late at night fatigue could have been an issue, although the first officer and I checked it 4 times. We could have missed it (most likely). Supplemental information from acn 636950: we completed a trip in aty with after landing checklists and shutdown/termination checklists. Retired to hotel. Morning crew found pitot cover to be melted onto pitot tube. Human factor: we may have left pitot switch on.

Google
 

Original NASA ASRS Text

Title: AN SF340 PITOT TUBE COVER MELTED ON HEATED PITOT TUBE.

Narrative: ON SHUTDOWN CHKLIST PITOT TUBE HEAT MAY HAVE BEEN LEFT ON, OR AFTER DEPLANING, RAMP PERSONNEL COULD HAVE TURNED IT ON, OR PITOT COVER MAY HAVE BEEN INSTALLED BEFORE PITOT TUBE COOLED. PITOT TUBE COVER MELTED ONTO PITOT TUBE. LATE AT NIGHT FATIGUE COULD HAVE BEEN AN ISSUE, ALTHOUGH THE FO AND I CHKED IT 4 TIMES. WE COULD HAVE MISSED IT (MOST LIKELY). SUPPLEMENTAL INFO FROM ACN 636950: WE COMPLETED A TRIP IN ATY WITH AFTER LNDG CHKLISTS AND SHUTDOWN/TERMINATION CHKLISTS. RETIRED TO HOTEL. MORNING CREW FOUND PITOT COVER TO BE MELTED ONTO PITOT TUBE. HUMAN FACTOR: WE MAY HAVE LEFT PITOT SWITCH ON.

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.