Author Topic: Oshkosh "Collision" on Fisk Arrival  (Read 10897 times)

Offline MSN ATC

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Oshkosh "Collision" on Fisk Arrival
« on: August 16, 2010, 12:27:08 AM »
Hi All,

I was browsing the NTSB preliminary reports and found this incident that happened on the Fisk arrival at Oshkosh during Airventure on July 27, 2010:

http://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20100730X91552&key=1

I hadn't heard anything about this one, so I pulled the ATC archives and put together a compilation of related transmissions from three frequencies. The file attached to this post contains:

-- A brief transmission from the Saratoga pilot to the Fisk controllers.

--Several minutes of activity on tower north (118.5) after the Cub pilot calls in with an emergency.

--Several minutes of tower south (126.6) starting when the Saratoga pilot lands.

Its always interesting to hear how the controllers at Oshkosh can very quickly make changes to accommodate a fast stream of closely spaced landing aircraft on multiple runways.

The original archive recordings can be found under July 27, 2010, 1700-1730Z.
« Last Edit: July 21, 2011, 10:50:17 PM by MSN ATC »



Offline pouda99

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Re: Oshkosh "Collision" on Fisk Arrival
« Reply #1 on: August 27, 2010, 08:24:31 PM »
Thanks for posting this. Nice editting. Occurred the same day as the Jack Roush crash.

I see the Cub did an emergency straight in to 09 and landed without incident. What I don't understand is the Saratoga was cleared repeatedly by North KOSH ATC to land 27 but he seems to have landed 18 right where his gear collapsed and he went off the left edge of the runway. South ATC quickly and efficiently diverted other traffic to 18 left and sent some away. Wouldn't she have been surprised by the unexpected arrival of Saratoga directly from the north? If she was, you wouldn't know it from the way she professionally worked the emergency.

I'm inferring from the reports that the Saratoga clipped the Cub's prop from above with his left main gear. Pilots are advised to drop gear early (page 7 of NOTAM) http://www.airventure.org/flying/2010_NOTAM.pdf :  "Landing Gear – If possible, lower your landing gear prior to reaching Fisk. There will be a lot of distractions near the airport and it is better to be safe than sorry."  How ironic those last few words.

I'm a newbie, nonpilot, noncontroller so I could very well be off base. Any corrections are much appreciated.

Offline MSN ATC

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Re: Oshkosh "Collision" on Fisk Arrival
« Reply #2 on: August 27, 2010, 09:12:41 PM »
I wondered the same thing about how the Saratoga pilot diverted to 18 right, but after listening a few times I think I figured it out.  Right after the Cub gets cleared for runway 9, the north controller starts telling everybody on frequency to go to 126.6 (south controller) so I'll bet the Saratoga pilot was just following these general instructions. At the time, he probably didn't know he had any damage so he was non-emergency and just making room for the opposite direction Cub on 9.

Offline pouda99

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Re: Oshkosh "Collision" on Fisk Arrival
« Reply #3 on: August 27, 2010, 09:47:50 PM »
That seems to be the most logical explanation.

But he didn't receive landing clearance from 126.6. (not that I could hear anyway). Did that not concern him or did he just sequence himself in? I see there is a Fisk Railroad Arrival Procedure for 18R/L. I guess he interpreted the freq change as clearance to cross 09-27 midfield and make straight in for 18R, but wow, that must be gutsy to do without actually hearing you've been cleared. Sounds like there were lots of airplanes flying around ...

Offline narmer3678

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Re: Oshkosh "Collision" on Fisk Arrival
« Reply #4 on: December 31, 2010, 11:38:31 PM »
I am on the emergency responce team at Oshkosh. The saratoga's gear did not collapase. The cubs prop actually cut his tire, and hit the outer wheel half. The saratoga did not know of the damage, and upon landing the flat pulled the aircraft off the runway .