Damage Photos

As always, left click on most photos to see larger photo

Note: The crash of the Hummel UltraCruiser earlier in 2009 demonstrated the integrity of the wing connection to the fuselage.  The wing folded in flight.  The pilot reported a loud bang.  He then saw the wing fold.  He blacked out. Other reports place the aircraft at 50 to 75 feet from the ground.  The crash occurred during the 3rd circuit.  Additional reports indicate the failure was at the wing root.

Note: I am not identifying the people until permission is granted.


I received the following report on the pilot, "His wrist was pretty bad and also his left foot.  They have put a pin in his wrist and are letting the swelling go down from his foot to fix it.  He will likely be in the Hospital for a few more days.  He is in good
spirits though and will be taking a few months off to recover" [w]

Links to news report
cnews ... Pilot survives ultralight plane crash

Immediately after the accident, I was approached by an operator at the airport for comment.   My first conclusion was incorrect.  [S. Steve Adkins]

"The piece that you thought was the spar cap in photo 1639 is one of the fuselage side stringers that was bent into the spar.  I bent it out of the way for some of the other pictures." [w]. 

"We think that the 6061T6 material is the side rail not the spar cap. Since there are no holes in the top [as would be true for the spar cap].  That is not to say that the spars are correct but we can't tell from the photos. We believe, even if the spars were 6061T6 it should not have failed unless there is some other major construction issues." [m]

The wing spar appears to have been built out of the correct material.

Photos from the Hummel Aviation Website during stress testing:
  Interior  The center carry-thru support on the right side buckled under compression.
  Full Series of Stress Testing Photos  
  Material Testing performed by Steve Adkins and Dale Johnson  



Note: Right wing moved around to facilitate extracting pilot.

This view show the protection provided by the structure.
For comparison ... test setup at Hummel Aviation:
Support of carry-thru.

Note: I have rotated these photos from the Hummel Aviation Website.
The orientation on the website reflects the fact that the wing is tested upside down.
For comparison ... test setup at Hummel Aviation:
Under stress.

The center carry-thru support on the right side buckled under compression.

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Address of this webpage:  http://quid.us//hummel/damage/