Delta B712 at Chicago on Jun 16th 2015, commenced takeoff without clearance and rejected
Last Update: June 18, 2015 / 18:56:19 GMT/Zulu time
Incident Facts
Date of incident
Jun 16, 2015
Classification
Incident
Airline
Delta Airlines
Flight number
DL-1328
Departure
Chicago Midway, United States
Destination
Atlanta, United States
Aircraft Registration
N939AT
Aircraft Type
Boeing 717-200
ICAO Type Designator
B712
A Southwest Airlines Boeing 737-700, registration N223WN performing flight WN-3828 from Chicago Midway,IL to Tulsa,OK (USA), had been cleared to line up runway 31C and wait. The aircraft taxied into position and waited.
A short time later tower cleared Southwest Tree Eight Two Eight for takeoff runway 31C without delay. Two aircraft acknowledged the transmission making the readback unreadable, tower repeated: "Southwest Tree Eight Two Eight, cleared for takeoff runway 31C, no delay". Again two aircraft read back, Southwest getting into the clear during readback of "eight two eight".
A few seconds later the controller realized that two aircraft were rolling and called "STOP! STOP! STOP!" effectively halting every movement on the airport. Both aircraft rejected takeoff and stopped safely.
Tower subsequently confirmed that Southwest had been cleared for takeoff, but Delta also rolled.
DL-1328 departed about 30 minutes later and reached Atlanta with a delay of 10 minutes.
A replacement Boeing 737-700 registration N410WN departed as flight WN-3828 about 3:45 hours later and reached Tulsa with a delay of 220 minutes.
N223WN resumed service about 11 hours after rejecting takeoff.
Review of ground frequencies during taxi of both aircraft to their departure runways revealed, that ground control was aware of the similiar callsigns of the two aircraft and advised Delta: "Delta thirteen twenty eight, be advised, some more callsign on frequency is Southwest thirty eight twenty eight ..." which was acknowledged by Delta "we'll be aware". Shortly after ground control advised: "Southwest thirty eight twenty eight, be advised, some more callsign on frequency is Delta thirteen twenty eight ..." acknowledged by the crew "We'll be aware". Both aircraft were on ground frequency during both these transmissions.
Aircraft Registration Data
Incident Facts
Date of incident
Jun 16, 2015
Classification
Incident
Airline
Delta Airlines
Flight number
DL-1328
Departure
Chicago Midway, United States
Destination
Atlanta, United States
Aircraft Registration
N939AT
Aircraft Type
Boeing 717-200
ICAO Type Designator
B712
This article is published under license from Avherald.com. © of text by Avherald.com.
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