Narrative:

On mar/wed/93 at PM30 EST at teb, nj, while acting as copilot on an light transport landing at teb on ILS runway 6, the aircraft lost directional control on an icy and snow covered runway and skidded off the right side of runway 6. The ATIS report received 15 mins prior to landing advised of light snow and surface winds from 340 degrees at 14 KTS and a surface temperature of 33 degrees F. The ATIS report did not include any braking action reports. However, when asked, the control tower operator reported the braking to be fair but did not include what type of aircraft had made the report and also stated the report was 20 mins old. With the surface temperature above freezing and light snow reported, I did not expect a snow covered runway. I believe the snow fall was heavier than the reported light snow and feel the control tower has a responsibility to advise aircraft crews of the additional snow accumulation covering the runway. The ILS approach to runway 6 was a normal approach and landing with all checklists completed and the airplane configured for landing. At touchdown the airplane had nil braking on the snow covered runway. The airplane continued towards the right side of the runway where the right side airplane tip tank struck a snow bank next to the runway and the airplane left the runway. WX obtained on the ground at msp and en route from cleveland flight watch did not call for the WX we encountered upon arrival at teb. Ground personnel need to keep flcs advised of any and all changes in WX conditions so that they can evaluate this information and respond as necessary with any changes to maintain a safe flight. Supplemental information from acn 236654: before landing, the copilot asked (twice) for any braking action reports and was told 'braking action fair 20 mins ago.' runway 6 had an accumulated amount of snow on it. Braking action nil. All efforts to return to centerline were ineffective. The bottom entrance door could not open because the left main gear collapsed due to excessive side loads. I asked if anyone was injured and all replied that they were okay. The aircraft came to rest completely off of runway 6, north of taxiway C, 3500 ft from the end of runway 6, with 2500 ft of runway remaining. Teb emergency equipment was dispatched to the scene, along with an airport authority van.

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Original NASA ASRS Text

Title: A CPR LTT SLID OFF THE SIDE OF THE RWY IN A XWIND. THERE WAS FRESH SNOW ON THE RWY AND THAWING TEMPS.

Narrative: ON MAR/WED/93 AT PM30 EST AT TEB, NJ, WHILE ACTING AS COPLT ON AN LTT LNDG AT TEB ON ILS RWY 6, THE ACFT LOST DIRECTIONAL CTL ON AN ICY AND SNOW COVERED RWY AND SKIDDED OFF THE R SIDE OF RWY 6. THE ATIS RPT RECEIVED 15 MINS PRIOR TO LNDG ADVISED OF LIGHT SNOW AND SURFACE WINDS FROM 340 DEGS AT 14 KTS AND A SURFACE TEMP OF 33 DEGS F. THE ATIS RPT DID NOT INCLUDE ANY BRAKING ACTION RPTS. HOWEVER, WHEN ASKED, THE CTL TWR OPERATOR RPTED THE BRAKING TO BE FAIR BUT DID NOT INCLUDE WHAT TYPE OF ACFT HAD MADE THE RPT AND ALSO STATED THE RPT WAS 20 MINS OLD. WITH THE SURFACE TEMP ABOVE FREEZING AND LIGHT SNOW RPTED, I DID NOT EXPECT A SNOW COVERED RWY. I BELIEVE THE SNOW FALL WAS HEAVIER THAN THE RPTED LIGHT SNOW AND FEEL THE CTL TWR HAS A RESPONSIBILITY TO ADVISE ACFT CREWS OF THE ADDITIONAL SNOW ACCUMULATION COVERING THE RWY. THE ILS APCH TO RWY 6 WAS A NORMAL APCH AND LNDG WITH ALL CHKLISTS COMPLETED AND THE AIRPLANE CONFIGURED FOR LNDG. AT TOUCHDOWN THE AIRPLANE HAD NIL BRAKING ON THE SNOW COVERED RWY. THE AIRPLANE CONTINUED TOWARDS THE R SIDE OF THE RWY WHERE THE R SIDE AIRPLANE TIP TANK STRUCK A SNOW BANK NEXT TO THE RWY AND THE AIRPLANE LEFT THE RWY. WX OBTAINED ON THE GND AT MSP AND ENRTE FROM CLEVELAND FLT WATCH DID NOT CALL FOR THE WX WE ENCOUNTERED UPON ARR AT TEB. GND PERSONNEL NEED TO KEEP FLCS ADVISED OF ANY AND ALL CHANGES IN WX CONDITIONS SO THAT THEY CAN EVALUATE THIS INFO AND RESPOND AS NECESSARY WITH ANY CHANGES TO MAINTAIN A SAFE FLT. SUPPLEMENTAL INFO FROM ACN 236654: BEFORE LNDG, THE COPLT ASKED (TWICE) FOR ANY BRAKING ACTION RPTS AND WAS TOLD 'BRAKING ACTION FAIR 20 MINS AGO.' RWY 6 HAD AN ACCUMULATED AMOUNT OF SNOW ON IT. BRAKING ACTION NIL. ALL EFFORTS TO RETURN TO CTRLINE WERE INEFFECTIVE. THE BOTTOM ENTRANCE DOOR COULD NOT OPEN BECAUSE THE L MAIN GEAR COLLAPSED DUE TO EXCESSIVE SIDE LOADS. I ASKED IF ANYONE WAS INJURED AND ALL REPLIED THAT THEY WERE OKAY. THE ACFT CAME TO REST COMPLETELY OFF OF RWY 6, N OF TXWY C, 3500 FT FROM THE END OF RWY 6, WITH 2500 FT OF RWY REMAINING. TEB EMER EQUIP WAS DISPATCHED TO THE SCENE, ALONG WITH AN ARPT AUTHORITY VAN.

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.