WPR13CA016

NTSB accident investigation · Boeing 737-3H4 · Las Vegas, NV · October 17, 2012

Accident · Serious injuriesData collectionFinal report
Date
October 16, 2012, 18:30 local (Oct 17, 2012, 01:30 UTC)
Place
Las Vegas, NV
Injuries
1 serious, 85 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N625SWBoeing 737-3H4
Defining event
Enroute-cruise: Cabin safety event
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
Case key
85360

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The flight attendant's encounter with an unseen obstruction in the aisle, which resulted in a fall.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Physical workspace: positioning/available spaceEnvironmental issues › Task environment · Effect on personnelBoeing 737-3H4: 1 caseAll aircraft: 11 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

Southwest Airlines personnel reported that, during cruise flight between Oklahoma City, Oklahoma, and Las Vegas, Nevada, a flight attendant who was conducting beverage service tripped over a passenger's leg that was protruding into the aisle. The flight attendant fell and felt pain in her left knee and foot. She did not resume her flight attendant duties during the flight. After landing she went to a local hospital, where medical personnel determined that she had a fractured metatarsal in her left foot. There were no mechanical difficulties or anomalies with the airplane during the flight, and the event was not related to turbulence.

Factual narrative

Southwest Airlines reported that during a flight from Oklahoma City, Oklahoma, to Las Vegas, Nevada, while at cruise, a flight attendant that was conducting beverage service tripped over a passenger's leg that was protruding into the isle. The flight attendant fell and felt pain in her knee and foot. She did not resume her duties during the flight. After landing she self reported to a local hospital where it was determined that she had a metatarsal fractured in her left foot. There were no mechanical difficulties or anomalies with the airplane during the flight and the event was not related to turbulence.

Aircraft

Registration
N625SW
Reported as
Boeing 737-3H4
Category
Airplane
Serial number
27701
Airframe hours
53,645
Engines
Ge/Cfm CFM56 SERIES, 22,000 lbs thrust, turbo fanGe/Cfm CFM56 SERIES, 22,000 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
Southwest Airlines
Registered owner
US Bank Na Trustee
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · October 14, 2012
Departed
KOKC · Oklahoma City, OK
Destination
KLAS · Las Vegas, NV
Flight plan
IFR
Airport
KLAS · Las Vegas

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
58
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
September 12, 2012
Seat
Left
Flight hours
20,600 total · 5,000 in this make and model
Role
Co-pilot
Age
51
Injuries
None
Certificates
Commercial, Airline transport, Military
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
October 12, 2012
Seat
Right
Flight hours
6,250 total · 1,400 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 45 °F
Altimeter
29.73 inHg
Observed at
KLAS

Docket · 1

The files NTSB released with the investigation on November 14, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 910 KB in all.