Narrative:

My first officer was flying the approach. He was on a stabilized approach, the ATIS reported runway 23 as active runway at 9 KTS, and no reports of ice. Inside the OM, the first officer gave me positive control of the aircraft. I continued the approach. I was on a stabilized approach on runway centerline (visual approach). I asked for a wind check and was told wind was at 15 KTS -- well within all parameters and limitations of my aircraft. Upon touchdown, due to the winds, I touched down on the runway centerline putting my right main down first (aileron into wind and rudder) to stay aligned with runway centerline. On ATIS and reports from tower, no indication of ice on runway prior to touchdown. (Ice patch that caused this incident was visually verified by my first officer, myself, the fire chief, the newsman also verified ice patch on runway that was not sanded from interview with maintenance crew from airport.) before I could put my left main down, the aircraft skidded on ice and veered to the left sharply and abruptly. I ran off of the runway and gained control of aircraft, deployed spoilers and thrust reversers, kept aircraft straight. Did not hit any runway lights or signs, no damage to aircraft. Performed off-runway inspection according to chapter 5 of the learjet maintenance manual. No damage done to aircraft, no injuries to crew onboard, no damage to property. The problem was caused by the patch of ice on the runway. Ice was not seen nor expected prior to touchdown. Other contributing factor was crosswind.

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Original NASA ASRS Text

Title: CAPT OF A LEARJET LOST CTL DURING LNDG ROLL DUE TO TOUCHING DOWN ON AN ICY PATCH ON THE RWY RESULTING IN THE ACFT VEERING OFF THE EDGE OF THE RWY ONTO A GRASSY MIDFIELD AREA. THERE WAS NO ACFT OR PROPERTY DAMAGE.

Narrative: MY FO WAS FLYING THE APCH. HE WAS ON A STABILIZED APCH, THE ATIS RPTED RWY 23 AS ACTIVE RWY AT 9 KTS, AND NO RPTS OF ICE. INSIDE THE OM, THE FO GAVE ME POSITIVE CTL OF THE ACFT. I CONTINUED THE APCH. I WAS ON A STABILIZED APCH ON RWY CTRLINE (VISUAL APCH). I ASKED FOR A WIND CHK AND WAS TOLD WIND WAS AT 15 KTS -- WELL WITHIN ALL PARAMETERS AND LIMITATIONS OF MY ACFT. UPON TOUCHDOWN, DUE TO THE WINDS, I TOUCHED DOWN ON THE RWY CTRLINE PUTTING MY R MAIN DOWN FIRST (AILERON INTO WIND AND RUDDER) TO STAY ALIGNED WITH RWY CTRLINE. ON ATIS AND RPTS FROM TWR, NO INDICATION OF ICE ON RWY PRIOR TO TOUCHDOWN. (ICE PATCH THAT CAUSED THIS INCIDENT WAS VISUALLY VERIFIED BY MY FO, MYSELF, THE FIRE CHIEF, THE NEWSMAN ALSO VERIFIED ICE PATCH ON RWY THAT WAS NOT SANDED FROM INTERVIEW WITH MAINT CREW FROM ARPT.) BEFORE I COULD PUT MY L MAIN DOWN, THE ACFT SKIDDED ON ICE AND VEERED TO THE L SHARPLY AND ABRUPTLY. I RAN OFF OF THE RWY AND GAINED CTL OF ACFT, DEPLOYED SPOILERS AND THRUST REVERSERS, KEPT ACFT STRAIGHT. DID NOT HIT ANY RWY LIGHTS OR SIGNS, NO DAMAGE TO ACFT. PERFORMED OFF-RWY INSPECTION ACCORDING TO CHAPTER 5 OF THE LEARJET MAINT MANUAL. NO DAMAGE DONE TO ACFT, NO INJURIES TO CREW ONBOARD, NO DAMAGE TO PROPERTY. THE PROB WAS CAUSED BY THE PATCH OF ICE ON THE RWY. ICE WAS NOT SEEN NOR EXPECTED PRIOR TO TOUCHDOWN. OTHER CONTRIBUTING FACTOR WAS XWIND.

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.