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A DC10-10 on takeoff had the left wing inboard slat segment separate from the aircraft caused by cracked composite material at the attach points.
| Attributes | |
| ACN | 412807 |
| Time | |
| Date | 199809 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 10 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 412807 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | other Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
A DC10-10 type aircraft loss of left hand wing leading edge inboard device on takeoff. This was looked at on the walkaround, but one cannot see under the leading edge device for condition of attachments. Callback conversation with reporter revealed the following information: the reporter stated the slat segment that separated was approximately 3- 4 ft in length and about 12 inches of the leading edge. The reporter said the composite material cracked on the upper and lower surfaces where joined by the attach fittings. The reporter stated a more frequent check of these slats may detect cracking in this area. The reporter said a walkaround check was made by the reporter prior to departure but the slats were retracted and nothing unusual was noted.
Original NASA ASRS Text
Title: A DC10-10 ON TKOF HAD THE L WING INBOARD SLAT SEGMENT SEPARATE FROM THE ACFT CAUSED BY CRACKED COMPOSITE MATERIAL AT THE ATTACH POINTS.
Narrative: A DC10-10 TYPE ACFT LOSS OF L HAND WING LEADING EDGE INBOARD DEVICE ON TKOF. THIS WAS LOOKED AT ON THE WALKAROUND, BUT ONE CANNOT SEE UNDER THE LEADING EDGE DEVICE FOR CONDITION OF ATTACHMENTS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE SLAT SEGMENT THAT SEPARATED WAS APPROX 3- 4 FT IN LENGTH AND ABOUT 12 INCHES OF THE LEADING EDGE. THE RPTR SAID THE COMPOSITE MATERIAL CRACKED ON THE UPPER AND LOWER SURFACES WHERE JOINED BY THE ATTACH FITTINGS. THE RPTR STATED A MORE FREQUENT CHK OF THESE SLATS MAY DETECT CRACKING IN THIS AREA. THE RPTR SAID A WALKAROUND CHK WAS MADE BY THE RPTR PRIOR TO DEP BUT THE SLATS WERE RETRACTED AND NOTHING UNUSUAL WAS NOTED.
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.