Narrative:

During takeoff roll at approximately 110 KTS, a loud thump was heard. Takeoff was continued, but once airborne, the aircraft would not pressurize. Consulted with dispatch and maintenance control concerning our pressurization problem. Diversion to ewr was performed after discussion with dispatch. Upon arrival at ewr, a hole about 8-12 inches in diameter was found on the lower fuselage about 20 ft aft of the nose gear. Jfk auths reported finding a recessed light cover laying on runway after being notified we had struck something on takeoff roll. It is suspected our nose gear kicked the light cover up to our fuselage during our takeoff roll.

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Original NASA ASRS Text

Title: A DC9-50 FLT HAS TO DIVERT TO EWR AFTER BEING UNABLE TO PRESSURIZE. THE ACFT'S NOSEWHEEL HIT AND DISLODGED A CTRLINE RWY LIGHT COVER THAT PUT A 12-20 INCH HOLE IN THE FUSELAGE BEHIND THE NOSE GEAR DURING TKOF AT JFK, NY.

Narrative: DURING TKOF ROLL AT APPROX 110 KTS, A LOUD THUMP WAS HEARD. TKOF WAS CONTINUED, BUT ONCE AIRBORNE, THE ACFT WOULD NOT PRESSURIZE. CONSULTED WITH DISPATCH AND MAINT CTL CONCERNING OUR PRESSURIZATION PROB. DIVERSION TO EWR WAS PERFORMED AFTER DISCUSSION WITH DISPATCH. UPON ARR AT EWR, A HOLE ABOUT 8-12 INCHES IN DIAMETER WAS FOUND ON THE LOWER FUSELAGE ABOUT 20 FT AFT OF THE NOSE GEAR. JFK AUTHS RPTED FINDING A RECESSED LIGHT COVER LAYING ON RWY AFTER BEING NOTIFIED WE HAD STRUCK SOMETHING ON TKOF ROLL. IT IS SUSPECTED OUR NOSE GEAR KICKED THE LIGHT COVER UP TO OUR FUSELAGE DURING OUR TKOF ROLL.

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.