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A GLF4 crew reported that the runway braking action reported for ril, co, was inaccurate, causing them to depart runway 26.
| Attributes | |
| ACN | 570335 |
| Time | |
| Date | 200301 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ril.airport |
| State Reference | CO |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Ice |
| Light | Night |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | landing : roll |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 13750 flight time type : 720 |
| ASRS Report | 570335 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 10500 flight time type : 3500 |
| ASRS Report | 570339 |
| Events | |
| Anomaly | excursion : runway ground encounters other other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | aircraft : evacuated none taken : insufficient time |
| Consequence | other other other |
| Supplementary | |
| Problem Areas | Aircraft Airport Flight Crew Human Performance Weather |
| Primary Problem | Airport |
Narrative:
After a normal approach and landing to ril runway 26, the aircraft slid off the end of the runway. On final, the braking action was reported as 'mu 35-45' (poor to fair). Actual braking action was nil. No apparent damage to aircraft. Since the airport was uncontrolled and had not been shut down, we elected to move the plane off the dirt to clear the centerline in case another aircraft attempted to land. This incident serves to re-emphasize the need to exercise extreme caution on landing in mountainous/cold WX airports and the need to be skeptical of any information. Supplemental information from acn 570339: normal touchdown and brake application. Report of mu 35-45, actual mu 15-20.
Original NASA ASRS Text
Title: A GLF4 CREW RPTED THAT THE RWY BRAKING ACTION RPTED FOR RIL, CO, WAS INACCURATE, CAUSING THEM TO DEPART RWY 26.
Narrative: AFTER A NORMAL APCH AND LNDG TO RIL RWY 26, THE ACFT SLID OFF THE END OF THE RWY. ON FINAL, THE BRAKING ACTION WAS RPTED AS 'MU 35-45' (POOR TO FAIR). ACTUAL BRAKING ACTION WAS NIL. NO APPARENT DAMAGE TO ACFT. SINCE THE ARPT WAS UNCTLED AND HAD NOT BEEN SHUT DOWN, WE ELECTED TO MOVE THE PLANE OFF THE DIRT TO CLR THE CTRLINE IN CASE ANOTHER ACFT ATTEMPTED TO LAND. THIS INCIDENT SERVES TO RE-EMPHASIZE THE NEED TO EXERCISE EXTREME CAUTION ON LNDG IN MOUNTAINOUS/COLD WX ARPTS AND THE NEED TO BE SKEPTICAL OF ANY INFO. SUPPLEMENTAL INFO FROM ACN 570339: NORMAL TOUCHDOWN AND BRAKE APPLICATION. RPT OF MU 35-45, ACTUAL MU 15-20.
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.