Unstabilized approach and hard landing involving Southwest Airlines aircraft

No fatalities • New York-LaGuardia, United States of America • Landing (descent or approach)

A Southwest Airlines flight experienced a hard landing after the crew failed to execute a go-around despite the aircraft being unstabilized on final approach.

What happened

During the final approach phase, the aircraft's flaps were not set to the required 40-degree landing configuration as originally briefed. Flight data records show that the captain, acting as the pilot monitoring, did not adjust the flaps to the correct setting until the plane was descending through approximately 500 feet, roughly 51 seconds before touchdown. As the aircraft descended between 100 and 200 feet, it drifted above the glideslope.

Approximately nine seconds before landing, the captain repeatedly instructed the first officer to descend. At an altitude of about 27 feet, the captain took manual control of the aircraft, stating, "I got it." Following this transfer of control, the control column was released to a neutral position, and the throttles were not increased until one second before the wheels met the runway. The Boeing 737 (implied aircraft type based on context, though the source does not provide a specific model name or registration, I will stick to the facts provided) touched down with a nose-down pitch of -3.1 degrees and a descent rate of 960 feet per minute. This resulted in a hard landing where the nose gear struck the runway first. The aircraft eventually came to a halt on the right side of the runway centerline, approximately 2,500 feet from the initial contact point. There were no fatalities or injuries reported in the provided text.

Findings

Investigation into the event revealed several deviations from standard operating procedures. The operator's stabilized approach criteria mandate an immediate go-around if the landing gear or flaps are not in the final configuration by 1,000 feet above the touchdown zone; however, the flaps were not corrected until 500 feet. Additionally, the captain failed to utilize the glideslope deviation as a trigger for a go-around.

The failure to initiate a go-around when the approach became unstabilized was a primary factor. The late transfer of control at 27 feet left the crew with insufficient time to correct the aircraft's energy state. Furthermore, the captain's communication and handling of the aircraft were inconsistent with the flight operations manual, specifically regarding glideslope callouts and the protocol for transferring control. The crew's actions demonstrated poor crew resource management.

Probable cause

The crew failed to execute a go-around despite the aircraft being in an unstabilized approach configuration.

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Frequently asked questions

What happened in the 2013-07-22 Boeing 737-700 accident near New York-LaGuardia, United States of America?

A Southwest Airlines flight experienced a hard landing after the crew failed to execute a go-around despite the aircraft being unstabilized on final approach.

Were there any fatalities in the 2013-07-22 Boeing 737-700 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 2013-07-22 involved a Boeing 737-700, registration N753SW, operated by Southwest Airlines (USA), at New York-LaGuardia, United States of America.

What was the probable cause of the accident?

The crew failed to execute a go-around despite the aircraft being in an unstabilized approach configuration.

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