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B737 flight crew reports captain's sliding window cracking at FL270 approaching top of descent. Flight crew declares emergency and lands at destination airport.
| Attributes | |
| ACN | 809374 |
| Time | |
| Date | 200810 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 27000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 158 flight time total : 9790 flight time type : 2545 |
| ASRS Report | 809374 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 4000 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
In cruise while approaching top of descent; captain and I heard a noise and suddenly noticed cracking in captain sliding window. This was soon followed by minute temporary arcing on the same window and never was witnessed again. We affirmed duties as captain called for checklist and I ran irregular checklist. We asked ATC for lower altitude and proceeded through checklist to assure a smooth gradual pressurized descent for the time being. At this point in the checklist; we were approaching ZZZ1 where I recommended landing. Captain recommended ZZZ so we proceeded to ZZZ declared an emergency state; completed checklist items and later landed uneventfully.
Original NASA ASRS Text
Title: B737 FLT CREW REPORTS CAPT'S SLIDING WINDOW CRACKING AT FL270 APPROACHING TOP OF DESCENT. FLT CREW DECLARES EMERGENCY AND LANDS AT DESTINATION ARPT.
Narrative: IN CRUISE WHILE APCHING TOP OF DSCNT; CAPT AND I HEARD A NOISE AND SUDDENLY NOTICED CRACKING IN CAPT SLIDING WINDOW. THIS WAS SOON FOLLOWED BY MINUTE TEMPORARY ARCING ON THE SAME WINDOW AND NEVER WAS WITNESSED AGAIN. WE AFFIRMED DUTIES AS CAPT CALLED FOR CHKLIST AND I RAN IRREGULAR CHKLIST. WE ASKED ATC FOR LOWER ALT AND PROCEEDED THROUGH CHKLIST TO ASSURE A SMOOTH GRADUAL PRESSURIZED DSCNT FOR THE TIME BEING. AT THIS POINT IN THE CHKLIST; WE WERE APCHING ZZZ1 WHERE I RECOMMENDED LNDG. CAPT RECOMMENDED ZZZ SO WE PROCEEDED TO ZZZ DECLARED AN EMER STATE; COMPLETED CHKLIST ITEMS AND LATER LANDED UNEVENTFULLY.
Data retrieved from NASA's ASRS site as of May 2009 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.