Narrative:

Departed el paso, tx, at 27500 pounds gross weight for srb. En route was uneventful. AWOS 3 at srb reported 1200 ft broken, 4 mi visibility, calm winds (no report of runway conditions or precipitation). Tried to contact unicom, but no answer. Cleared for an NDB approach runway 4. Aircraft was in landing confign, landing checklist complete, wings level at vref (120 KIAS) plus 10 at 1 1/2 mi from approach end of runway 4, on PAPI GS. Touchdown was abeam the PAPI, on GS, wings level at vref minus 2 (118 KIAS). On touchdown, the speed brakes were deployed and the brakes were applied. No braking action was felt. Passed mid-field intersection at approximately 100 KIAS. At this point, the PIC shut down the right engine and maintained brake pressure. With approximately 1500 ft of runway remaining, the PIC shut down the left engine. (The standby) hydraulic pump had been armed at the IAF as a backup fix brakes and steering. With approximately 100 ft of runway remaining, the aircraft was still going 60 KIAS. Aircraft entered the overrun area at approximately 40 KIAS and stopped in the mud approximately 150 ft off the end of the runway. No damage to aircraft, no injuries. Recommendations: AWOS 3 should include precipitation reports and possibly runway conditions. Cargo falcons that have their drag chutes and thrust reversers removed for simplicity of maintenance should not fly into wet runways less than 6000 ft long. Conclusion: I believe aircraft was subjected to a viscous hydroplaning situation.

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Original NASA ASRS Text

Title: LTT ATX CARGO JET RUNS OFF END OF RWY AT UNCTLED ARPT DUE TO WET RWY AND POSSIBLE HYDROPLANING OF ACFT.

Narrative: DEPARTED EL PASO, TX, AT 27500 LBS GROSS WT FOR SRB. ENRTE WAS UNEVENTFUL. AWOS 3 AT SRB RPTED 1200 FT BROKEN, 4 MI VISIBILITY, CALM WINDS (NO RPT OF RWY CONDITIONS OR PRECIPITATION). TRIED TO CONTACT UNICOM, BUT NO ANSWER. CLRED FOR AN NDB APCH RWY 4. ACFT WAS IN LNDG CONFIGN, LNDG CHKLIST COMPLETE, WINGS LEVEL AT VREF (120 KIAS) PLUS 10 AT 1 1/2 MI FROM APCH END OF RWY 4, ON PAPI GS. TOUCHDOWN WAS ABEAM THE PAPI, ON GS, WINGS LEVEL AT VREF MINUS 2 (118 KIAS). ON TOUCHDOWN, THE SPD BRAKES WERE DEPLOYED AND THE BRAKES WERE APPLIED. NO BRAKING ACTION WAS FELT. PASSED MID-FIELD INTXN AT APPROX 100 KIAS. AT THIS POINT, THE PIC SHUT DOWN THE R ENG AND MAINTAINED BRAKE PRESSURE. WITH APPROX 1500 FT OF RWY REMAINING, THE PIC SHUT DOWN THE L ENG. (THE STANDBY) HYD PUMP HAD BEEN ARMED AT THE IAF AS A BACKUP FIX BRAKES AND STEERING. WITH APPROX 100 FT OF RWY REMAINING, THE ACFT WAS STILL GOING 60 KIAS. ACFT ENTERED THE OVERRUN AREA AT APPROX 40 KIAS AND STOPPED IN THE MUD APPROX 150 FT OFF THE END OF THE RWY. NO DAMAGE TO ACFT, NO INJURIES. RECOMMENDATIONS: AWOS 3 SHOULD INCLUDE PRECIPITATION RPTS AND POSSIBLY RWY CONDITIONS. CARGO FALCONS THAT HAVE THEIR DRAG CHUTES AND THRUST REVERSERS REMOVED FOR SIMPLICITY OF MAINT SHOULD NOT FLY INTO WET RWYS LESS THAN 6000 FT LONG. CONCLUSION: I BELIEVE ACFT WAS SUBJECTED TO A VISCOUS HYDROPLANING SIT.

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.