2015-06-16 Delta and Southwest aircraft runway incursion at Chicago-Midway


2015-06-16 Delta and Southwest aircraft runway incursion at Chicago-Midway


Both aircraft were involved in a ground incursion at Chicago-Midway Airport.

The Delta Air Lines Boeing 717 received clearace for line-up on runway 04R(right) while the Southwest Boeing 737 was also lined-up for take-off on the intersecting runway 31C(center). Both aircraft were instructed to hold on the runway awaiting take-off clearance.

After another aircraft has landed on runway 04L(left), the tower controller gave take-off clearance to the Southwest 737 (callsign „Southwest 3828„).  At this time both pilots read back the clearance resulting in a garbled transmission making it impossible to identify the Delta 717 pilot (callsign „Delta 1328„) acknowledging the take-off clearance. 

Only the words „eight two eight“, at the end of the transmission were clearly readable.

Both aircraft began their take-off runs. Some seconds later tower controller realized the conflict situation and yelled „Stop, Stop, Stop!“ (check LiveATC recording in right column).

Both aircraft came to a stop well ahead of the runway intersection.

Nobody was hurt in the incursion. Both flights reached their destinations with delay.

The incident is under investigation by FAA / NTSB.


Date: 2015-06-16 Time: 19:40
Location: KMDW MDW Chicago Midway
Country: USA
Flight phase: TOF – Take-off, Rejected Take-off
Damage to a/c: none


Flight 1
Flight no.: DL 1328
From: KMDW/MDW: Chicago Midway To: KATL/ATL: Atlanta-Hartsfield Intl Airport
Type: Passenger
Operator: Delta Air Lines

Flight 2
Flight no.: WN 3828
From: KMDW/MDW: Chicago Midway To: KTUL/TUL: Tulsa Intl
Type: Passenger
Operator: Southwest Airlines


Aircraft 1
Type: Boeing 717
Registration: N939AT
Age a/c: 9,2 years
Constr. No.: 55099

Aircraft 2
Type: Boeing 737-700
Registration: N223WN
Age a/c: 9,6 years
Constr. No.: 34292


Aircraft Involved

© A. Martin | Airteamimages.com (in livery of previous operator)

Occupants & Casualties

Crew Pax Other Total
Fatalities 0 0 0 0
Injuries 0 0 0 0

JACDEC 20-year Statistics :

  • 9th safety occurence at airport
  • 2nd runway incursion occurence at the airport within 5 years

Order a Safety Report

Safety Report - Delta Air Lines Safety Report - Southwest Airlines

Image & Information Sources

LIVE ATC Recording (time 09:30)


AP = Airport / AL = Airlines / Avn = Aviation / AW = Airways / C/N: Construction Number / DSP = Domestic Scheduled Passenger / DNP = Domestic Non-Scheduled Passenger / DSC = Domestic Scheduled Cargo / DNC= Domestic Non-Scheduled Cargo / GND = On the ground / parked, stored / FMN= Flying Mission, Air Work / FRY = Ferry-, Positioning Flight / IMC = Intrument Meteorological (flying) Conditions / ISP = International Scheduled Passenger / ISC=International Scheduled Cargo / INP = International Non-Scheduled Passenger / INC =International Non-Scheduled Cargo/ OPS = Flight Operation(s) / NRV = Non-revenue, Private Flight / TRN =Training Flight /  TST = Test & Certification Flight / VMC = Visual Meteorological (flying) Conditions