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Eurocopter bk117a3 on test flight at 700 ft. The pilots sliding window departed the aircraft. Caused by disbonding of the retaining rails.
| Attributes | |
| ACN | 554020 |
| Time | |
| Date | 200207 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : zzz1.vor |
| State Reference | US |
| Altitude | agl single value : 700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | general aviation : corporate |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 57.6 flight time total : 5997.6 flight time type : 550 |
| ASRS Report | 554020 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : landed as precaution |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
While conducting a post maintenance test flight the sliding window (approximately 12 in X 8 in plexiglas) departed the aircraft. The retaining rails (one top/one bottom) partially debonded from the main window and allowed the small sliding window to slide aft and out of its mount. Callback conversation with reporter revealed the following information: the reporter stated the sliding window is located on the side cockpit window and the top and bottom retaining rails that hold the plexiglas sliding window became disbonded allowing the plexiglas panel to slip out.
Original NASA ASRS Text
Title: EUROCOPTER BK117A3 ON TEST FLT AT 700 FT. THE PLTS SLIDING WINDOW DEPARTED THE ACFT. CAUSED BY DISBONDING OF THE RETAINING RAILS.
Narrative: WHILE CONDUCTING A POST MAINT TEST FLT THE SLIDING WINDOW (APPROX 12 IN X 8 IN PLEXIGLAS) DEPARTED THE ACFT. THE RETAINING RAILS (ONE TOP/ONE BOTTOM) PARTIALLY DEBONDED FROM THE MAIN WINDOW AND ALLOWED THE SMALL SLIDING WINDOW TO SLIDE AFT AND OUT OF ITS MOUNT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE SLIDING WINDOW IS LOCATED ON THE SIDE COCKPIT WINDOW AND THE TOP AND BOTTOM RETAINING RAILS THAT HOLD THE PLEXIGLAS SLIDING WINDOW BECAME DISBONDED ALLOWING THE PLEXIGLAS PANEL TO SLIP OUT.
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.