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A canadair challenger 600 on descent at 13500 ft experienced a cracked copilot's windshield when entering a heavy rain shower. Ground inspection revealed additional radome damage.
| Attributes | |
| ACN | 404231 |
| Time | |
| Date | 199806 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : stl |
| State Reference | MO |
| Altitude | msl bound lower : 13500 msl bound upper : 13500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mci |
| Operator | common carrier : air taxi |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute airway : zkc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 10300 flight time type : 1200 |
| ASRS Report | 404231 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 4800 flight time type : 250 |
| ASRS Report | 404840 |
| Events | |
| Anomaly | inflight encounter : weather other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
ATC instructed us to cross imell intersection at 12000 ft and 250 KTS. On descent, approximately 20 NM northeast of imell, scattered buildups were encountered, the tops of which were 15000 ft MSL. Speed was reduced to 250 KTS. Radar showed no echoes due to ground clutter on descent. We encountered several buildups with moderate turbulence for 10-15 seconds. The last buildup experienced heavy rain. Forward copilot windshield cracked when the heavy WX was encountered. Upon landing radome was damaged due to the heavy WX. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a canadair challenger 600 and the window outer pane was cracked. The reporter said the cockpit windshields on this aircraft have a high failure rate probably because the outer glass pane is only .125 inches thick.
Original NASA ASRS Text
Title: A CANADAIR CHALLENGER 600 ON DSCNT AT 13500 FT EXPERIENCED A CRACKED COPLT'S WINDSHIELD WHEN ENTERING A HVY RAIN SHOWER. GND INSPECTION REVEALED ADDITIONAL RADOME DAMAGE.
Narrative: ATC INSTRUCTED US TO CROSS IMELL INTXN AT 12000 FT AND 250 KTS. ON DSCNT, APPROX 20 NM NE OF IMELL, SCATTERED BUILDUPS WERE ENCOUNTERED, THE TOPS OF WHICH WERE 15000 FT MSL. SPD WAS REDUCED TO 250 KTS. RADAR SHOWED NO ECHOES DUE TO GND CLUTTER ON DSCNT. WE ENCOUNTERED SEVERAL BUILDUPS WITH MODERATE TURB FOR 10-15 SECONDS. THE LAST BUILDUP EXPERIENCED HVY RAIN. FORWARD COPLT WINDSHIELD CRACKED WHEN THE HVY WX WAS ENCOUNTERED. UPON LNDG RADOME WAS DAMAGED DUE TO THE HVY WX. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A CANADAIR CHALLENGER 600 AND THE WINDOW OUTER PANE WAS CRACKED. THE RPTR SAID THE COCKPIT WINDSHIELDS ON THIS ACFT HAVE A HIGH FAILURE RATE PROBABLY BECAUSE THE OUTER GLASS PANE IS ONLY .125 INCHES THICK.
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.