Statisticians ONLY: What is the probability of this being a jet stream?

April 3, 2010 - 6:34 am 3 Comments

http://www.denverpost.com/ci_8067281?source=rss

* The captain apologized for the inconvenience and the horrific events of earlier in the evening.
* He went on to say that he has flown all over the world for United and has never experienced anything like we did that night.

Flight 1028 passenger: I thought we would crash
By Carter Robertson Special to The Denver Post
Article Last Updated: 01/24/2008 04:16:48 PM MST

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* 10 hospitalized on turbulent United flight

Editor’s note: Carter Robertson was on United Flight 1028 with his wife, daughter and future son-in-law on Monday. They had been in Hawaii on vacation and were returning to Virginia. The plane encountered turbulence and was diverted to Denver at 2:55 a.m. Eight passengers and two flight attendants were injured.

The plane was close to being full — 187 counting crew — and it was approaching the time for take-off. Everyone was getting settled in for the relatively short flight to Chicago. As we rolled down the runway, I’m sure no one had any idea of what was to come.

As we approached the 37,000-foot mark, the captain turned off the seat belt light. The flight attendants were handing out drinks to passengers some 3 to 4 rows in front of me. The flight thus far, again, was so remarkably smooth that I would say it felt as if we were floating on clouds.

I had decided I would pass on a drink and start with my nap. I had not yet closed my eyes when without any warning — not even the slightest hint of what was about to happen — it happened.

* In a split-second some indescribable force violently sucked the plane 700-vertical feet up and in another split second pushed it down the same 700 feet. ( Care to look up the probability of survival in a physics book’)
* How did he know it was 700 feet up & down?
* What does the radar for the weather report say about this?
* Is there any recorded incident in aviation history that even resembles this?
* Satellite imagery readings?

People who weren’t buckled in were thrown up, hitting the bulkhead. I was buckled in tight but was suspended above my seat during the roller-coaster ride.

* The flight attendants were also launched up into the plane’s ceiling, bouncing off and returning to the cabin floor.

The drink cart was lifted off the floor and landed at an angle against a passenger. One female flight attendant was injured while pulling the cart off the passenger. Pillows, blankets, ice, drink cups and drink cans flew across the plane in every direction. Women and children (and, I’m sure, even some men) screamed.

* The force wasn’t just a smooth up-and-down movement.
* The plane was in a constant state of vibrating, shuddering and rolling during this unexpected vertical ride.
* There is no way I can do justice in describing the violent nature of this unprovoked attack upon the aircraft.

I can only say that in the 5-10 seconds this event occurred that many things raced through my mind. In an instant I knew we were all dead, that the plane could not possibly withstand the violent forces attacking it at from every angle.

* As the thoughts continued to race, seconds ticked by, and the plane was now in a 6,000 foot nose dive.
* I quickly realized that the plane had actually survived one of nature’s most wicked forces, and now we were racing toward the Rocky Mountains at 400 mph. Probability of survival from this incident? +700 to -7– ft. and then a 6,000 ft, ‘dive’.

Just like in the movies, the noise from the jet engines was increasing in decibels and in pitch. My attention now shifted to the dive of the plane and what was taking place in the cockpit. Was the captain in control?

I don’t know how long the dive lasted, but slowly the plane leveled, and the engine noise subsided.

The captain did have control of the plane.

I looked to my right at my wife. We could only shake our heads. It was moments latter before anyone could say anything.

Once the plane was in control, the flight attendants went about the job of assessing the injuries to the passengers. I can’t begin to express my sincere gratitude for the clam, professional and courageous manner in which the flight crew handled the aftermath of the event.

It was probably five minutes later when the captain came over the intercom and informed us that due to injuries and possible damage to the plane that we would stop at Denver, and that paramedics would be on hand to treat the injured.

We were in the terminal for about 45-60 minutes when the captain came out and addressed the passengers. The captain apologized for the inconvenience and the horrific events of earlier in the evening. He went on to say that he has flown all over the world for United and has never experienced anything like we did that night.

He assured us that the rest of the flight to Chicago would be uneventful, and he was right.

My everlasting praise goes out to the crew of United Flight 1028. Outstanding job. Outstanding job.

Not sure, but the probability that anybody is going to read through all that is about . . . 0.2%, I’d say.

3 Responses to “Statisticians ONLY: What is the probability of this being a jet stream?”

  1. galaxor, destroyer Says:

    Not sure, but the probability that anybody is going to read through all that is about . . . 0.2%, I’d say.
    References :

  2. vivaloca13 Says:

    I cannot answer your question, but I do have a smaller incident! First…. I want to say that I am happy for you and your wife…… that you made it back safely.
    In September of 2000, my best friend (who lived in Sarasota, FL) was getting married. For months preceding, I teased her regarding her timing (given that mid Sept was the height of hurricaine season). She laughed and told me how it "never happens" in Sarasota. She was right, but she was not the one flying into it.
    I took a friend with me, and left behind my husband, my 3 1/2 year old son, and my 5 month old daughter. I will not even begin to go into the antics that we went through getting there, nor what we encountered during our visit, but will just say that the ceremony had to be moved at the last minute……… it was crazy! This all took place during Hurricaine Gordon. We flew into it! It was NOT bad! I didn’t notice anything during the flight!
    However, upon our return to STL, we left Tampa, FL to fly to Charlotte, NC. That flight was a different story. I am just going to tell what I remember, and that is a horrible smell! Everyone on the plane was vomiting! The plane was not going up and down…….. or even side to side……. it was rolling one way and then the other. Evidently, it is worse to fly into a "low pressure area" than a "high pressure area" (hurricaines are high pressure). It felt like some kind of wierd ride, and I will never forget the sound of the people vomiting, nor the smell! We had to take 2 tries at the runway, and luckily got it! This was the first time that I have exited an airplane when the cockpit was still closed.
    Anyway, just a wierd experience, and like the poster, I am grateful to that pilot for bringing me home safely! I know by the landing that it was NOT easy!
    References :

  3. bravozulu Says:

    Since it was sudden and apparently vertical turbulence, it was most likely from a thunderstorm. It is possible that it was caused by the jet stream.
    References :

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