Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

‘Asymmetric flying’ probed as culprit in deadly jet crash (Israeli F-16)
The Times of Israel ^ | October 6, 2016 | JUDAH ARI GROSS

Posted on 10/07/2016 6:33:55 AM PDT by sukhoi-30mki

An F-16 fighter jet that crashed during a landing attempt in southern Israel Wednesday, killing its pilot, may have been flying “asymmetrically,” with ordnance on one wing but not the other, an expert said Thursday, as the army probed what caused the fiery wreck and its fatal results.

Eran Ramot, a former fighter pilot and researcher at the Fisher Institute for Air and Strategic Studies, said the asymmetry was currently the leading theory for what caused the wreck, which killed Maj. Ohad Cohen Nov.

However, that alone should not have caused a crash, as planes and pilots routinely fly with this imbalance, Ramot told The Times of Israel over the phone.

On Wednesday afternoon, a two-seat F-16I fighter jet, known in Israel as a Sufa, crashed as it prepared to land at the Ramon Air Base in the Negev after a bombing run in the Gaza Strip.

The navigator, who sits in the rear seat, ejected from the plane and sustained some light injuries. However, Cohen Nov, the pilot and deputy commander of the squadron, died in the crash.

According to the IDF, both the pilot and navigator ejected from the plane, but questions have been raised as to when exactly Cohen Nov managed to bail out and if he was still alive at the time of ejection.

IAF chief Maj. Gen. Amir Eshel has ordered an investigation into the incident to be led by a colonel, the army said.

However, unlike in 2013 when an F-16I crashed into the Mediterranean Sea and the remaining F-16I aircraft were temporarily grounded as a safety measure, Eshel did not impose such a measure in this case, according to the Haaretz newspaper.

“There are a million and one ways to investigate crashes. You can check the recordings, speak with the navigator who was in the plane until he ejected. I assume if he bailed out, he knows why he did,” Ramot said.

“There are different techniques and some very advanced pieces of technology to check the plane’s systems,” he said.

Until the investigation is complete, there is little use in speculating on what could have caused the crash, Ramot stressed. It does not appear to have been brought down by enemy fire or any external force, he said.

“But anything is possible,” he said.

“The Russians just sent to Syria an S-300 missile defense system. It can reach Gaza and hit a plane. Who knows?” Ramot said, speaking hyperbolically.

However, the former test pilot and current head of the Fisher Institute’s aviation research department offered some explanation of how asymmetry and the F-16I’s ejection system could have led to Cohen Nov’s death.

“When a plane goes on an operational sortie it carries ordnance on its wings. During the operational activity, it apparently released ordnance from one wing — you don’t release from both at once, you release one after another — and was left with ordnance on the other,” Ramot said.

“From there it returned to land. I don’t know why [it didn’t drop the ordnance from the second wing], maybe it didn’t need to or there was some issue with its release,” he said.

Flying with extra weight on one wing is not typically a problem as aircraft are generally capable of compensating for the asymmetry by themselves and pilots are also taught how to fly in such a scenario manually.

During landing that asymmetry can be somewhat more problematic, as the plane flies at a lower speed and thus has less air pushing it up, Ramot said.

However, if the plane or the pilot experiences difficulty while flying or it looks like there will be a problem landing with that asymmetry, the solution is fairly simple — dropping the bomb, usually over a body of water, Ramot said.

That did not happen in this case, though it does appear that Cohen Nov and the navigator experienced difficulties in landing, as according to an Army Radio report they made a pass over the airfield before coming in for the landing.

It was during that second landing attempt that the crash occurred.

One of the other as yet unanswered questions in the incident is how the navigator ejected with light injuries, while Cohen Nov did not survive.

The F-16I and F-16B variants are what’s known as two-seat aircraft, which are flown by both a pilot and a navigator, unlike the F-16A and F-16C, which are flown by one person.

All of these jets come equipped with a handle which, when pulled, blows off the plane’s canopy, fires the crew members out in ejector seats and releases their parachutes to bring them down safely.

However, in two-seater aircraft there are two options for ejecting from the plane: either both are automatically ejected — first the navigator and then “a few seconds later” the pilot — or the navigator can eject on his own, Ramot said.

It is not yet clear which of those two scenarios occurred in this case, if both tried to eject from the plane, but because of the order, the navigator made it out safely, while the pilot did not, or if only the navigator ejected, while the pilot attempted to land the plane by himself, before ultimately trying to bail out.

Cohen Nov, 34, was described as a capable and distinguished pilot, as evidenced by the fact that he was recently named deputy commander of the Atalef, or Bat, squadron.

He leaves behind a pregnant wife and one daughter, as well as two sisters and his parents.

His funeral will be held on Friday at 11 a.m. in Mazor, a small community outside Petah Tikva.


TOPICS: Foreign Affairs; Israel; News/Current Events
KEYWORDS: aerospace; f16; israel

IAF pilot Maj. Ohad Cohen Nov, 34, died Wednesday, October 5, 2016 while ejecting from his F-16 fighter jet as he tried to land at the Ramon air base in southern Israel. (Courtesy)

1 posted on 10/07/2016 6:33:55 AM PDT by sukhoi-30mki
[ Post Reply | Private Reply | View Replies]

To: sukhoi-30mki
Israeli F-16
2 posted on 10/07/2016 6:34:27 AM PDT by sukhoi-30mki
[ Post Reply | Private Reply | To 1 | View Replies]

To: sukhoi-30mki
questions have been raised as to when exactly Cohen Nov managed to bail out and if he was still alive at the time of ejection.

What misadventure could kill him in the plane?

3 posted on 10/07/2016 6:37:54 AM PDT by null and void (America is sick. We will find out if the disease is fatal come November.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: sukhoi-30mki

Warriors,All.


4 posted on 10/07/2016 6:42:37 AM PDT by Big Red Badger (UNSCANABLE in an IDIOCRACY!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: sukhoi-30mki

Been flying most of my life, but still amazes me that the plane can still fly with all that ordenance on it.....


5 posted on 10/07/2016 6:50:06 AM PDT by Arlis
[ Post Reply | Private Reply | To 2 | View Replies]

To: Arlis

Me too. One time flying my 310, I inteneded to switch to aux tank, but went to cross feed by mistake. then just as I was getting ready to land at home I noticed that my rignt main was empty. Oh Oh, Reversed the cross feed, and landed with one full left main and empty right. No problem, the 310 is a great plane!


6 posted on 10/07/2016 7:55:06 AM PDT by stubernx98 (cranky, but reasonable)
[ Post Reply | Private Reply | To 5 | View Replies]

To: null and void

I think they mean that he or the nav initiated ejection, but the aircraft
impacted before the seat actually fired. The ejection sequence takes time, jettisoning the canopy, delay, rear seat firing, delay, fwd seat firing.


7 posted on 10/07/2016 7:58:59 AM PDT by USNBandit (Sarcasm engaged at all times)
[ Post Reply | Private Reply | To 3 | View Replies]

To: stubernx98

Yeah, the 310 is the Ferrari of light twins for sure - but then there’s the reputation, true or false, of a wing falling off! never flew one tho....sadly.....

My dad had a Twin Commanche which is a nice twin too - but lands a bit hot......many hours in it - many..........

Scary error there, could have been disastrous if you hadn’t caught it! The Lord was guiding you there for sure!

Highly rated pilot friend went in in a P-38 because of a similar error - and not having enough fuel for a short test flight.......


8 posted on 10/07/2016 8:43:20 AM PDT by Arlis
[ Post Reply | Private Reply | To 6 | View Replies]

To: null and void
In a two seater, the pilot or rear seater can initiate the ejection process. The ejection is sequenced automatically to eject the rear seater first then the front seater. The front seater is sequenced about 1/2 second after the rear seater and that could cause his ejection to occur at or even after impact.

The real problem there the pilot may have already suffered impact trauma or is ejecting at an unusual attitude at zero altitude. In many cases when the plane is low and slow and near the ground, the pilot has a tendency to stay with it until the last split second.

(A great example of this is the Thunderbird ejection. The pilot there was a fraction of a second from eating it.)

https://www.youtube.com/watch?v=alo_XWCqNUQ

9 posted on 10/07/2016 8:43:57 AM PDT by pfflier
[ Post Reply | Private Reply | To 3 | View Replies]

To: stubernx98

“Out of the blue of the western sky, it’s Sky King!”

Flying his Cessna 310. Brought to you by Nabisco.

Dad had an Air Force friend who bought a 310 when he retired. He & his wife flew everywhere for a while but eventually sold it.


10 posted on 10/07/2016 9:19:35 AM PDT by elcid1970 ("The Second Amendment is more important than Islam. Buy ammo.")
[ Post Reply | Private Reply | To 6 | View Replies]

To: null and void

The blast of the other seat could have been a problem. It has been known to injure. Also the force of his own seat’s launch could have been a problem too. Many people have died just from the force of the ejection itself.


11 posted on 10/07/2016 9:49:09 AM PDT by TalonDJ
[ Post Reply | Private Reply | To 3 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson