Narrative:

Our assigned runway was 4R at ewr. Aircraft were departing on 4L (inboard). There was a direct crosswind from the northwest at about 10-15 KTS. At about 5-6 mi on final tower cleared us to land and cautioned wake turbulence due to heavy aircraft departing inboard runway. At 2-3 mi on final I noticed the beginning takeoff roll of the heavy. All was normal on landing until approximately 50 ft when the aircraft began drifting slightly right of centerline. While in the flare the aircraft dropped suddenly making a firm landing and at about the same time the left wing dropped rapidly which caused evasive action by the captain to level wings. After clearing the runway, I advised the tower we encountered significant turbulence just prior to touchdown. At this point we were unaware the landing light had made contact with the runway. Maintenance did not catch the scratched light on the exterior walk-around. In all fairness, since the lights on an medium large transport extend from the wing end, there very easily may not have been anything to see if the lights retracted normally during taxi-in. Our next flight to cvg departed on time and was a normal flight. However, after arriving at the gate in cvg, maintenance made us aware of a scrape on bottom of landing light and the light was not fully retracted. The only recommendation I have would be to give more spacing between departing heavy aircraft, and arriving aircraft when xwinds accelerate the wake turbulence across the path of landing aircraft.

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Original NASA ASRS Text

Title: MLG ENCOUNTERS WAKE TURB ON LNDG. SCRAPED LNDG LIGHT AS TEMPORARILY LOST ACFT CTL.

Narrative: OUR ASSIGNED RWY WAS 4R AT EWR. ACFT WERE DEPARTING ON 4L (INBOARD). THERE WAS A DIRECT XWIND FROM THE NW AT ABOUT 10-15 KTS. AT ABOUT 5-6 MI ON FINAL TWR CLRED US TO LAND AND CAUTIONED WAKE TURB DUE TO HVY ACFT DEPARTING INBOARD RWY. AT 2-3 MI ON FINAL I NOTICED THE BEGINNING TKOF ROLL OF THE HVY. ALL WAS NORMAL ON LNDG UNTIL APPROX 50 FT WHEN THE ACFT BEGAN DRIFTING SLIGHTLY R OF CTRLINE. WHILE IN THE FLARE THE ACFT DROPPED SUDDENLY MAKING A FIRM LNDG AND AT ABOUT THE SAME TIME THE L WING DROPPED RAPIDLY WHICH CAUSED EVASIVE ACTION BY THE CAPT TO LEVEL WINGS. AFTER CLRING THE RWY, I ADVISED THE TWR WE ENCOUNTERED SIGNIFICANT TURB JUST PRIOR TO TOUCHDOWN. AT THIS POINT WE WERE UNAWARE THE LNDG LIGHT HAD MADE CONTACT WITH THE RWY. MAINT DID NOT CATCH THE SCRATCHED LIGHT ON THE EXTERIOR WALK-AROUND. IN ALL FAIRNESS, SINCE THE LIGHTS ON AN MLG EXTEND FROM THE WING END, THERE VERY EASILY MAY NOT HAVE BEEN ANYTHING TO SEE IF THE LIGHTS RETRACTED NORMALLY DURING TAXI-IN. OUR NEXT FLT TO CVG DEPARTED ON TIME AND WAS A NORMAL FLT. HOWEVER, AFTER ARRIVING AT THE GATE IN CVG, MAINT MADE US AWARE OF A SCRAPE ON BOTTOM OF LNDG LIGHT AND THE LIGHT WAS NOT FULLY RETRACTED. THE ONLY RECOMMENDATION I HAVE WOULD BE TO GIVE MORE SPACING BTWN DEPARTING HVY ACFT, AND ARRIVING ACFT WHEN XWINDS ACCELERATE THE WAKE TURB ACROSS THE PATH OF LNDG ACFT.

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.