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Captain's forward window on B757-200 began arcing and immediately cracked during cruise. Flight crew coordinated a return to departure airport.
| Attributes | |
| ACN | 751936 |
| Time | |
| Date | 200708 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute : pacific |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain observation : company check pilot oversight : pic |
| Experience | flight time last 90 days : 75 flight time total : 17100 flight time type : 10000 |
| ASRS Report | 751936 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 210 flight time total : 6500 flight time type : 3000 |
| ASRS Report | 751938 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport flight crew : landed as precaution |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Cruising at FL350; captain's forward window began arcing and then immediately cracked. Received clearance to return to ZZZ where we landed overweight. Landing was performed by first officer and was uneventful. Landing weight was 203;000 pounds (5000 pounds overweight).callback conversation with reporter revealed the following information: the reporter stated the window cracked within seconds of the initial arcing and the flight crew obtained clearance to descend to 10000 ft. Although an emergency was not declared; it became apparent on initial contacts with ARTCC and approach control that they believed the flight was an emergency aircraft.
Original NASA ASRS Text
Title: CAPT'S FORWARD WINDOW ON B757-200 BEGAN ARCING AND IMMEDIATELY CRACKED DURING CRUISE. FLT CREW COORDINATED A RETURN TO DEP ARPT.
Narrative: CRUISING AT FL350; CAPT'S FORWARD WINDOW BEGAN ARCING AND THEN IMMEDIATELY CRACKED. RECEIVED CLEARANCE TO RETURN TO ZZZ WHERE WE LANDED OVERWEIGHT. LANDING WAS PERFORMED BY FO AND WAS UNEVENTFUL. LANDING WEIGHT WAS 203;000 LBS (5000 LBS OVERWEIGHT).CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE WINDOW CRACKED WITHIN SECONDS OF THE INITIAL ARCING AND THE FLT CREW OBTAINED CLRNC TO DESCEND TO 10000 FT. ALTHOUGH AN EMER WAS NOT DECLARED; IT BECAME APPARENT ON INITIAL CONTACTS WITH ARTCC AND APCH CONTROL THAT THEY BELIEVED THE FLT WAS AN EMER ACFT.
Data retrieved from NASA's ASRS site as of January 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.