Discussing recent PA28 crash in Florida N9855S
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- This is a discussion of a recent air crash (N9855S) in Florida, the NTSB preliminary report has been released.
The aircraft appears to have broken up in flight from an overstress. This is reported by the surviving pilot to have occurred during an "EASA Stall with power off recovery"
Having taught this stall myself, I would like to give me opinion on the manoeuvre and whether it could cause such a catastrophic failure of the airframe.
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very good analysis and no guitar music to go with it thank heaven!
I'm a bit rusty on the banjo!
hahaha :-) @@Taylair
Very interesting, and given the fear generated by the thought of a departure of a wing from an aircraft, I completely agree that the facts about what actually caused this accident need to be highlighted. I recently spent a couple of months flying in the US in GA training aircraft, some of which cosmetically did not look well maintained, and whilst this may not mean anything from an airworthiness perspective, when coupled with incidents such as this, it does give one pause for thought about concerns over structural airframe integrity, and the difference between the failure of said integrity due to fatigue vs possible pilot induced structural failure.
Absolutely agree with you!
While there has been a small number of well documented wing attach failures on the PA28 leading to ADs on the PA28/32 family, this was clearly an unrelated overstress failure caused by abusive piloting.
Ouch - that's not going to help that kid's career, although he should hopefully accomplish something amazing in life with the luck he had in surviving that crash. Stunning luck - I doubt many people can say that they survived when most of the bits fell off the aircraft.
The person that survived is a Check airman gold seal instructor and he is actually back at school doing stage check exams for students, is incredible to see him alive and well but me personally i have recently dropped out of this school mid CPL training since there was another fatal accident on March 30 of this year
Interesting, is he still claiming the wing just fell off?
I mean he never claimed it just fell off, the maneuver the were performing was the last drop needed for the wing to detach in my opinion, remember the plane had been involved in a previous accident in 2002. But considering this Piper’s wing spar AD it’s clear the school didn’t do the proper inspections to verify its integrity. I know the AD requires the wing spar inspection to be every 7 years but common considering the plane reaches a 100 hour inspection in less than 3 weeks the responsible thing to do for the school is to do that inspection more frequently than required by law.
@@christianforero. did you read the report? It wasn’t a fatigue fracture according to the NSTB. The entire wing box was bent into a U shape and both wings were severed off from overstress. I’d like to hear the PICs explanation of the maneuver I highlighted from the ADSB data…
@@christianforero.I graduate from Aviator 2 years ago? Can I ask you who is that alive instructor?
Really interesting. Thank you!
One might think that after that maneuver which may have caused the "box" to bend upward, they had a few moments to realize just how bad they "messed" up before the wing departed.
I would say so
If you looked carefully you will find out that Aviator college had another fatal accident that’s mean some have to figure out what it is going on there
Dan does some nice reviews, but he jumps the gun at times too.
Yeah I think he gets a little carried away sometimes 😂
Cherokees can be very difficult to get into a full stall. A common technique is right when it should stall is to jerk back on the yolks. If this technique has been used too harshly and/or too many times it could break the airplane.
There’s no way that what you’re describing is going to cause a complete failure of the wing spar box, rip both wings clean from the fuselage and take the stabilator off. That requires a high G maneuver, consistent with what the ADSB data is showing.
@@Taylair Yes, but you can take a lot of the strength out of it making it more vulnerable to failure.
The NTSB report is quite clear that no fatigue was present. No way that pulling it into a stall from straight and level flight and increasing the rate of back pressure for the last couple of seconds is going to cause a complete airframe failure. More likely that the maneuver I highlighted caused the damage.
@@Taylair Interesting and thank you for the clarification.
How on earth was there a survivor.
The place to be if you are a private pilot. Vero Beach, Fl is where Piper is and literally 345 days of the year is VFR. Ft. Pierce is up the road a bit.
I have many years of flying around there!
Like I've said before: Complete a *thorough* preflight inspection, you never know what the previous renter/student has done to the airplane. This time the airplane said it had enough.
I agree with your assessment. However I would not be surprised if the wing did depart the aircraft. The age of the GA/training fleet is terrible. As a whole we don’t even drive cars that old anymore. Crazy complicated and over arching government regulations have made it almost impossible for the industry to produce new aircraft.
I don't think of a 2002 PA28 as an old aircraft myself but I see where you're coming from. My issue and the reason I made the video is that I feel like someone could be either misremembering the sequence of events or worse trying to pull the wool over our eyes as regarding what happened here, which if believed could have grounded a fleet of serviceable aircraft unnecessarily.
I'm curious if anyone entertains the idea that there might have been some kind of failure of elevator control?
The NTSB pictures and analysis show a pretty clear cut overstress of the wing spar box which suggests a hard pull at high speed or similar, which would be consistent with the maneuvering I highlight from the ADSB data if it’s accurate.
@@Taylair That is a thought. Was the stabilator a distance from the aircraft? Was it detached? What CG change would the stabilator detachment cause that would create a sudden change in pitch that would in turn cause the wings to fold/detach and crush/deform that "box" in an upward arc?
Elevator failure would cause the nose to drop so I can't imagine this upwards bending would be caused by that. The damage is more consistent with a hard pull up, which is probably what caused he stabilator to fail with the rest of the airframe