Friday, January 18, 2019

Southwest Airlines, Boeing 737-7H4, N740SW: Incident occurred September 27, 2019 at St. Louis Lambert International Airport (KSTL), Missouri -and- Accident occurred November 19, 2017 at Los Angeles International Airport (KLAX), California

Federal Aviation Administration / Flight Standards District Office; Saint Louis

September 27, 2019: Aircraft blew right main landing gear upon landing damaging gear and flaps.

Southwest Airlines Company

https://registry.faa.gov/N740SW

Date: 27-SEP-19
Time: 00:45:00Z
Regis#: N740SW
Aircraft Make: BOEING
Aircraft Model: 737
Event Type: INCIDENT
Highest Injury: NONE
Aircraft Missing: No
Damage: UNKNOWN
Activity: COMMERCIAL
Flight Phase: LANDING (LDG)
Operation: 121
Aircraft Operator: SOUTHWEST AIRLINES
Flight Number: SWA2291
City: ST LOUIS
State: MISSOURI

Aviation Accident Final Report - National Transportation Safety Board:  https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

Location: Los Angeles, CA
Accident Number: DCA18CA074
Date & Time: 11/19/2017, 1230 PST
Registration: N740SW
Aircraft: BOEING 737 7H4
Aircraft Damage: None
Defining Event: Ground handling event
Injuries: 1 Serious, 5 None
Flight Conducted Under: Part 121: Air Carrier - Scheduled

Analysis 

On November 11, 2017, about 1230 Pacific standard time, Southwest Airlines flight 1159, a Boeing 737-700, N740SW, had a provisioning agent fall from the airplane while parked at Gate 13 at Los Angeles International Airport (KLAX), Los Angeles, California . The flight was deplaning and onboard were the captain, first officer, three flight attendants, several passengers, and the provisioning agent. The regularly scheduled passenger flight was operating under the provisions of 14 Code of Federal Regulations Part 121 from San Francisco International Airport (KSFO), San Francisco, California, to KLAX.

According to the operator, the provisioning vans platform/box assembly malfunctioned and lowered about 2-3 feet. As the provisioning agent was moving from the airplane to the platform he lost situational awareness and fell onto the lowered platform, injuring his shoulder. The agent was transported to the hospital and diagnosed with a fractured right shoulder. The van was removed from service and the left side tape switch was found to have dislodged from its track, resulting in the uncommanded lowering of the platform.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The provisioning agent's lack of situational awareness while stepping from the airplane to the provisioning van. Contributing to the accident was the provisioning vans failed switch.

Findings

Personnel issues
Attention - Ground crew (Cause)

Environmental issues
Ground equipment - Contributed to outcome (Factor)

Factual Information

History of Flight

Prior to flight
Ground handling event (Defining event)

Pilot Information

Certificate: Airline Transport; Flight Instructor
Age: 59, Male
Airplane Rating(s): Multi-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:4-point 
Instrument Rating(s): Airplane
Second Pilot Present:
Instructor Rating(s): Airplane Single-engine
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 09/18/2017
Occupational Pilot: Yes
Last Flight Review or Equivalent: 10/28/2017
Flight Time:   15243 hours (Total, all aircraft), 8500 hours (Total, this make and model), 8500 hours (Pilot In Command, all aircraft), 207 hours (Last 90 days, all aircraft), 78 hours (Last 30 days, all aircraft), 0 hours (Last 24 hours, all aircraft)

Co-Pilot Information

Certificate: Airline Transport
Age: 47, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Right
Other Aircraft Rating(s): None
Restraint Used: 4-point
Instrument Rating(s): Airplane
Second Pilot Present:
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 03/30/2017
Occupational Pilot: Yes
Last Flight Review or Equivalent: 03/27/2017
Flight Time:  4179 hours (Total, all aircraft), 1082 hours (Total, this make and model), 3553 hours (Pilot In Command, all aircraft), 260 hours (Last 90 days, all aircraft), 101 hours (Last 30 days, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: BOEING
Registration: N740SW
Model/Series: 737 7H4 7H4
Aircraft Category: Airplane
Year of Manufacture: 1998
Amateur Built: No
Airworthiness Certificate: Transport
Serial Number: 29276
Landing Gear Type: Retractable - Tricycle
Seats:
Date/Type of Last Inspection:
Certified Max Gross Wt.: 154500 lbs
Time Since Last Inspection:
Engines: 2 Turbo Fan
Airframe Total Time:
Engine Manufacturer: CFM INTL.
ELT:
Engine Model/Series: CFM56 SERIES
Registered Owner: SOUTHWEST AIRLINES CO
Rated Power:
Operator: Southwest Airlines
Operating Certificate(s) Held: Flag carrier (121)
Operator Does Business As:
Operator Designator Code: SWAA 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: LAX
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1953 UTC
Direction from Accident Site: 0°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: Broken
Visibility (RVR):
Wind Speed/Gusts: 10 knots /
Turbulence Type Forecast/Actual: / None
Wind Direction: 270°
Turbulence Severity Forecast/Actual: / N/A
Altimeter Setting:
Temperature/Dew Point:
Precipitation and Obscuration:
Departure Point: San Francisco, CA (SFO)
Type of Flight Plan Filed: None
Destination: Los Angeles, CA (LAX)
Type of Clearance: None
Departure Time: 1050 PST
Type of Airspace: Unknown

Airport Information

Airport: Los Angeles International (LAX)
Runway Surface Type: N/A
Airport Elevation: 126 ft
Runway Surface Condition: Unknown
Runway Used: N/A
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 5 None
Aircraft Damage: None
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: 1 Serious
Aircraft Explosion: None
Total Injuries: 1 Serious, 5 None
Latitude, Longitude:  33.945000, -118.408056 (est)

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