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Air carrier light transport aircraft front windshield cracked at high pressurized cruise altitude resulting in diverting to land.
| Attributes | |
| ACN | 225723 |
| Time | |
| Date | 199211 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : djb |
| State Reference | OH |
| Altitude | msl bound lower : 20000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| ASRS Report | 225723 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
We had departed yyz at XX30 local. It was my (captain's) leg to fly. On climb out, I turned the windshield heat plus engine anti-ice on about 2000 MSL. The system remained on through the climb until we got on top of the clouds at about 14300 MSL. I turned off the engine anti-ice but left the windshield heat on. They would be warm then for our descent. We were in the clear with a smooth ride at FL200, outside air temperature -20 degree C. We had been en route approximately 50 mins when we heard a bang like a muffled shot. We both reacted with 'what was that?' my first officer said it sounded like we hit something. I doubted that, as we made an initial visual sweep. The ice protection light came on on the cwp. I looked up to see the fault light on the first officer's front windshield. As I told first officer about the fault, he discovered the damage in the front windscreen. We turned on the interior lights and used flashlights and could see the extent of the damage. Our position when this happened was approximately 55 DME northeast of djb VOR. I made the decision to divert into cle and first officer agreed. I had him call cle center and ask for lower, advise them of our situation and our request to divert to cle. I slowed up to 180 KTS and had first officer start to depressurize the aircraft. As a precaution we opened the oxygen system, got the oxygen masks off the wall, made sure they were close and ready, and we donned the smoke goggles. I called the cabin and asked the flight attendant to come forward. I told flight attendant we had a damaged front windshield and we were diverting to cle. She was to suspend service and prepare for a normal landing in about 15 mins. I told her I'd talk to the passenger. I briefed the passenger on the diversion and the reason. We coordinated with the station, dispatch and the need for customs. No emergency was declared. No airport emergency equipment was used. The landing was normal and uneventful.
Original NASA ASRS Text
Title: ACR LTT ACFT FRONT WINDSHIELD CRACKED AT HIGH PRESSURIZED CRUISE ALT RESULTING IN DIVERTING TO LAND.
Narrative: WE HAD DEPARTED YYZ AT XX30 LCL. IT WAS MY (CAPT'S) LEG TO FLY. ON CLB OUT, I TURNED THE WINDSHIELD HEAT PLUS ENG ANTI-ICE ON ABOUT 2000 MSL. THE SYS REMAINED ON THROUGH THE CLB UNTIL WE GOT ON TOP OF THE CLOUDS AT ABOUT 14300 MSL. I TURNED OFF THE ENG ANTI-ICE BUT LEFT THE WINDSHIELD HEAT ON. THEY WOULD BE WARM THEN FOR OUR DSCNT. WE WERE IN THE CLR WITH A SMOOTH RIDE AT FL200, OUTSIDE AIR TEMP -20 DEG C. WE HAD BEEN ENRTE APPROX 50 MINS WHEN WE HEARD A BANG LIKE A MUFFLED SHOT. WE BOTH REACTED WITH 'WHAT WAS THAT?' MY FO SAID IT SOUNDED LIKE WE HIT SOMETHING. I DOUBTED THAT, AS WE MADE AN INITIAL VISUAL SWEEP. THE ICE PROTECTION LIGHT CAME ON ON THE CWP. I LOOKED UP TO SEE THE FAULT LIGHT ON THE FO'S FRONT WINDSHIELD. AS I TOLD FO ABOUT THE FAULT, HE DISCOVERED THE DAMAGE IN THE FRONT WINDSCREEN. WE TURNED ON THE INTERIOR LIGHTS AND USED FLASHLIGHTS AND COULD SEE THE EXTENT OF THE DAMAGE. OUR POS WHEN THIS HAPPENED WAS APPROX 55 DME NE OF DJB VOR. I MADE THE DECISION TO DIVERT INTO CLE AND FO AGREED. I HAD HIM CALL CLE CTR AND ASK FOR LOWER, ADVISE THEM OF OUR SITUATION AND OUR REQUEST TO DIVERT TO CLE. I SLOWED UP TO 180 KTS AND HAD FO START TO DEPRESSURIZE THE ACFT. AS A PRECAUTION WE OPENED THE OXYGEN SYS, GOT THE OXYGEN MASKS OFF THE WALL, MADE SURE THEY WERE CLOSE AND READY, AND WE DONNED THE SMOKE GOGGLES. I CALLED THE CABIN AND ASKED THE FLT ATTENDANT TO COME FORWARD. I TOLD FLT ATTENDANT WE HAD A DAMAGED FRONT WINDSHIELD AND WE WERE DIVERTING TO CLE. SHE WAS TO SUSPEND SVC AND PREPARE FOR A NORMAL LNDG IN ABOUT 15 MINS. I TOLD HER I'D TALK TO THE PAX. I BRIEFED THE PAX ON THE DIVERSION AND THE REASON. WE COORDINATED WITH THE STATION, DISPATCH AND THE NEED FOR CUSTOMS. NO EMER WAS DECLARED. NO ARPT EMER EQUIP WAS USED. THE LNDG WAS NORMAL AND UNEVENTFUL.
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.