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Last updated: 16 January 2021
Statuts:Enquête Officielle
Date:lundi 22 juillet 2013
Heure:17:44
Type/Sous-type:Silhouette image of generic B737 model; specific model in this crash may look slightly different
Boeing 737-7H4 (WL)
Compagnie:Southwest Airlines
Immatriculation: N753SW
Numéro de série: 29848/400
Année de Fabrication: 1999-10-06 (13 years 10 months)
Heures de vol:49536
Moteurs: 2 CFMI CFM56-7B22
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 145
Total:victimes: 0 / à bord: 150
Dégats de l'appareil: Substantiels
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:New York-La Guardia Airport, NY (LGA) (   Etats-Unis d'Amérique)
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Nashville International Airport, TN (BNA/KBNA), Etats-Unis d'Amérique
Aéroport de destination:New York-La Guardia Airport, NY (LGA/KLGA), Etats-Unis d'Amérique
Numéro de vol:WN345
Détails:
Southwest Airlines flight 345, a Boeing 737-700, suffered a nose gear collapse during a hard landing on runway 4 at New York-LaGuardia Airport (LGA), USA. Of the 144 passengers and 5 crewmembers on board, 8 sustained minor injuries, and the airplane was substantially damaged.
The flight had departed from Nashville International Airport (BNA), Tennessee, about 14:33 central daylight time. The first officer was the pilot flying (PF) for the trip to LGA, and a pilot from another airline occupied the cockpit jumpseat. The en route part of the flight was uneventful.
As the airplane was on final approach, the captain, who was the pilot monitoring (PM), realized that the flaps were not configured as had been briefed, with a setting of 40 degrees for the landing.
The captain set the flaps to 40 degrees as the airplane was descending through about 500 ft altitude, which was about 51 seconds from touchdown. When the airplane was between 100 to 200 ft altitude, it was above the glideslope. Concerned that the airplane was too high, the captain exclaimed repeatedly "get down" to the first officer about 9 seconds from touchdown. About 3 seconds from touchdown when the airplane was about 27 ft altitude, the captain announced "I got it," indicating that she was taking control of the airplane, and the first officer replied, "ok, you got it."
After the captain took control, the control column was relaxed to a neutral position and the throttles were not advanced until about 1 second before touchdown. The airplane touched down at a descent rate of 960 ft per minute and a nose-down pitch attitude of -3.1 degrees, resulting in the nose gear contacting the runway first and a hard landing. The airplane came to a stop on the right side of the runway centerline about 2,500 ft from its initial touchdown.

The operator's stabilized approach criteria require an immediate go-around if the airplane flaps or landing gear were not in the final landing configuration by 1,000 ft above the touchdown zone; in this case, the flaps were not correctly configured until the airplane was passing through 500 ft. Further, the airplane's deviation about the glideslope at 100 to 200 ft would have been another opportunity for the captain, as the PM at this point during the flight, to call for a go-around, as indicated in the Southwest Airlines Flight Operations Manual (FOM).

Probable Cause:

PROBABLE CAUSE: "The captain's attempt to recover from an unstabilized approach by transferring airplane control at low altitude instead of performing a go-around. Contributing to the accident was the captain's failure to comply with standard operating procedures."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years
Accident number: DCA13FA131
Download report: Summary report

Sources:
» NTSB
» Jet bound for scrap (Times Union, 29-1-2014)
» SKYbrary 


Photos

photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
photo of Boeing-737-7H4-N753SW
Flight Data Recorder (FDR) graph
photo of Boeing-737-7H4-N753SW
accident date: 22-07-2013
type: Boeing 737-7H4 (WL)
registration: N753SW
 

Video, social media

Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Nashville International Airport, TN et New York-La Guardia Airport, NY est de 1219 km (762 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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