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Air carrier medium large transport first officer starts descent without requesting clearance or declaring emergency upon experiencing windshield failure.
| Attributes | |
| ACN | 126469 |
| Time | |
| Date | 198910 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gup |
| State Reference | NM |
| Altitude | msl bound lower : 34700 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 210 flight time total : 13000 flight time type : 3000 |
| ASRS Report | 126469 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Level at 35,000 windshield on copilot started to shatter. I reached down for QRH, and then noticed that the first officer started down in altitude when he did not have to. I called ZAB for and received an immediate descent to a lower altitude of 24,000. This was as the aircraft was passing 34,700. Continued to phx at 24,000 with no other problem. I explained to first officer that we really didn't need to start down that fast as the windows had not blown out, and I tried to cover his action with a clearance to a lower altitude, which we would have done anyway.
Original NASA ASRS Text
Title: ACR MLG FO STARTS DESCENT WITHOUT REQUESTING CLRNC OR DECLARING EMERGENCY UPON EXPERIENCING WINDSHIELD FAILURE.
Narrative: LEVEL AT 35,000 WINDSHIELD ON COPLT STARTED TO SHATTER. I REACHED DOWN FOR QRH, AND THEN NOTICED THAT THE F/O STARTED DOWN IN ALT WHEN HE DID NOT HAVE TO. I CALLED ZAB FOR AND RECEIVED AN IMMEDIATE DSCNT TO A LOWER ALT OF 24,000. THIS WAS AS THE ACFT WAS PASSING 34,700. CONTINUED TO PHX AT 24,000 WITH NO OTHER PROBLEM. I EXPLAINED TO F/O THAT WE REALLY DIDN'T NEED TO START DOWN THAT FAST AS THE WINDOWS HAD NOT BLOWN OUT, AND I TRIED TO COVER HIS ACTION WITH A CLRNC TO A LOWER ALT, WHICH WE WOULD HAVE DONE ANYWAY.
Data retrieved from NASA's ASRS site as of August 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.