Originally Posted by USMCFLYR
(Post 3277823)
Anybody else the distinct LACK of any control surface movement during the takeoff sequence, airborne or even during the impact?
I don't think 'control lock' issue, control surface issue caused by xxxxxx, and that is where the NTSB comes in. |
The post-crash inset zoom image in the video seems to show the elevator neutral.
If you pause the video as the plane yaws toward the camera you can see what appears to be a knife-edge view of the h.stab and elevator... looks neutral there too. |
I got to meet Snort when I was a wet behind the ear Private pilot at OSH '07. As I was about to be a Midshipman he spared a couple of minutes to to tell me "Compartmentalization will keep you alive and sane." It didn't quite get it at the time but 10 years in the Navy, a wife, 3 kids, and a whole lot of **** later, it is the best advice I have ever gotten. He will be missed.
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NTSB Docket
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NTSB says probable cause was gust lock.
A full control check should have caught it, but it sounds like the lock allows enough rudder to taxi. |
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Originally Posted by rickair7777
(Post 3456031)
NTSB says probable cause was gust lock.
A full control check should have caught it, but it sounds like the lock allows enough rudder to taxi. On the L-19 , the predecessor, taxiing requires a lot of brake inputs, due to small rudder size and a heavy tail. Hard for me to believe an experienced tail wheel pilot would overlook the control lock skip the control check. Incapacitation seems more likely. |
Some years ago I was doing a bunch of quick turns in a foreign aircraft, which utilizes a control lock just after landing; big control surfaces are subject to damage in gusting conditions; the control lock stays engaged while hot loading the airplane, then is disengaged on the runway or just before. On the 9th or so load of the day, I pushed the power up with the control lock engaged. Someone was killed in the same type aircraft shortly before that, doing the same thing. A day later, I watched a pilot reject his takeoff, and though he didn't admit it, I knew exactly what happened. Same thing.
Incapacitation? Maybe. I doubt it. I make a habit of stirring the stick several times before every takeoff, and never the less, managed to taxi onto a runway with the controls locked. I had years of experience in type. It happens. |
Originally Posted by hopp
(Post 3465680)
The control lock allows minimal rudder movement. As you say, a control check would have discovered a lock. Also, the locking mechanism is quite visible, and locks the stick as well. That airframe can be taxied with minimal rudder input, by using brakes.
On the L-19 , the predecessor, taxiing requires a lot of brake inputs, due to small rudder size and a heavy tail. Hard for me to believe an experienced tail wheel pilot would overlook the control lock skip the control check. Incapacitation seems more likely. |
Originally Posted by rickair7777
(Post 3465879)
The pilot's radio transmissions indicate that he was alert when he was cleared and also a few seconds into the sequence. The controls surfaces are visible in the video and appear locked. The NTSB concluded that he could have completed the short taxi with the lock engaged. They also concluded the impact damage to the lock indicated that it was not stowed. The guy was a great pilot, he was also on the older side too.
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