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Southwest 737 and Learjet in Close Call at Midway

By Bethany Whitfield / Published: Jan 12, 2012
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Southwest 737

A Southwest 737 at Chicago Midway

NTSB investigators are looking into a near collision between a Southwest Boeing 737 and a Learjet 45 that took place at Chicago Midway International Airport last month.

According to investigators, the Dec. 1 incident occurred when the 737 landed on Runway 31 Center and began to taxi across Runway 31 Right, as instructed by air traffic control. Just as the Southwest jet crossed the 31R hold short line, the first officer spotted the approaching Learjet departing on 31R and called for the captain to stop the aircraft.

The Learjet, which had been cleared by another controller for takeoff on the runway, reportedly passed the Southwest jet with just 62 feet of vertical separation. NTSB officials say that air traffic control did not intervene to cancel either the Learjet’s or the 737’s clearance.

“What technology clears us on the runway when there’s a plane taking off?” one of the Southwest pilot’s asked air traffic controllers directly after the incident. While the Southwest pilot alleged the Learjet passed directly over the 737, investigators say the two aircraft maintained 287 feet of horizontal separation at their closest distance.

 

 

 
 
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SocalFlyer's picture

Sounds like the runways were being controlled on different frequencies, a not uncommon situation but one that limits the respective pilots' situational awareness, removing a significant extra safety cross-check.

jphilpo524's picture

The two most important words in the article: "spotted" and "called". We, as pilots, are still ulitimately in charge. The people in the tower aren't the ones that would be splattered all over the runway. "Clearance" does not mean blind compliance.

MooneyM20G's picture

When pilots screw up - pilots die. When controllers screw up - pilots die!

Lance S. Parkhurst's picture

This was an interesting article and again highlights the need for ATC and avionic systems that satisfy the gate to gate needs of the airlines, GA pilots, airport operators and flying public. The tragedies of Tenerife, Detroit, Skywest Metro, and Los Cerritos just to name a few, highlight the need for cost effective multi-role systems that meet safety and efficiency objectives.

A system demonstrated to the FAA some "2o years ago" shows what GNSS, Datalink and the right ADS-B system can provide. The "SEAMLESS AIRPORT".

Please check out the 15 minute documentary video at: http://www.youtube.com/user/vicksburg76

The biggest single aviation technology standing in the way of the modernization of the world's aviation system is a decades old radar mentality. It's analogous to communicating with the world over a telegraph with Morse Code. It is time for the 'past to get out of the way of the future' in the United States otherwise we'll be purchasing our 21st century avionics and ATC technology from overseas.

Steven Ravine's picture

“What technology clears us on the runway when there’s a plane taking off?” one of the Southwest pilot’s asked air traffic controllers directly after the incident.

Pilots are now relying on "technology" to replace situational awareness and common sense? We were taught in grade school to look both ways before crossing the street. I took off over the top of a United 727 at DFW many years ago and the United captain never knew it had happened. He had taken the clearance to cross the runway that was issued to another airplane and never looked down the runway before he crossed. He would have seen my 737 roaring toward him with all landing lights on and smoke billowing behind. Unfortunately, the controller took the error and not him.

booker655wer's picture

GENTLEMEN.. WHY DO WE WANT TO MAKE THINGS DIFFICULT...???
DO WE CROSS A BUSY STREET OR TRAIN CROSSINGS OR WHATEVER WITHOUT KEEPING
TO THE SIMPLE BASICS OFLOOK LEFT LOOK RIGHT.....NO MATTER WHAT THE CLEARANCE..!!

swafomdw's picture

Hey all,
I was the first officer in this situation. Runway 31C at MDW has a high-speed exit (taxiway B), which puts you blind to 31R initially. When we were cleared to cross 31R, which is very close laterally to 31C, we had to make a hard right turn onto Taxiway N, which now gives you a glimpse of 31R just before you are at the hold short line to 31R. I heard the clearance to cross, but remained heads-up the entire time, and didn't just rely on technology or the controller's eyes. By the time I could even see the Lear approaching, we had crossed the hold-short line, but, contrary to the article, were not on the actual surface of 31R, albeit very close. What the article also got wrong, which was due to the NTSB transcriptionist misinterpretation of the audio tapes, was that I asked the tower controller to acknowledge that he had just cleared us to cross a runway that had and aircraft taking off. I wanted to make sure he was aware of what just took place (or almost took place.) He then sent us to ground control. What I did not say is the statement was "What technology clears us for takeoff..." Listening to the audio, and given my accelerated rate of speech, it sounds a little like what the media and NTSB reported, but if you listen again, knowing what I just wrote, you can hear me asking tower to "acknowledge" which does sound a little like "technology" over the radio. But rest assured, I was not having a debate with the controller, since I knew he and I still had jobs to do. When we called the tower supervisor on the phone, he freely admitted his controller made a HUGE mistake, and he thanked me for being heads up. So if any0ne still thinks we were "blindly" crossing the runway, I hope this clears things up a little. BTW, not a single chief pilot, investigator, fellow SWA pilot, or anyone else who has flown into MDW that I have shared my experience with feels we could have done anything better. Fly safe!

Raffles's picture

You guys did a good job there. Press reports should always be read with caution.

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