FTW94LA229

NTSB accident investigation · Boeing 737-2H4 · South Bend, IN · July 7, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
July 7, 1994, 16:59 local (21:59 UTC)
Place
South Bend, IN
Injuries
1 serious, 104 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N60SWBoeing 737-2H4
Weather
Instrument (IMC) · Day
Status
Completed · report January 26, 1995
Report
Approved by Office Director
Case key
19109

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 encounter with unforcasted and unreported turbulence.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight encounter with weatherClimb - to cruise
Weather condition - turbulence in cloudsCause
Hazardous weather advisory - not issuedDispatcher

Analysis

A flight attendant working in the aft galley fell to the floor seriously injuring her back when the aircraft encountered turbulence. According to the flight crew, radar was used to avoid weather as the aircraft approached South Bend, Indiana. There had been no pilot reports of turbulence, and the company dispatcher weather package did not report turbulence. As the flight climbed through FL200, moderate turbulence was encountered for several seconds. The aircraft then entered visual meteorological conditions and smooth air. The captain stated that the unexpected turbulence started and stopped so quickly that he did not have time to warn the flight attendants. The seat belt sign was illuminated at the time the turbulence was encountered.

Factual narrative

On July 7, 1994, at 1659 central daylight time, a Boeing 737-2H4, N60SW, encountered moderate turbulence near South Bend, Indiana. One flight attendant was seriously injured. Four crew members and 100 passengers were not injured. Instrument meteorological conditions (IMC) prevailed for Southwest Airlines Flight 1490, scheduled Title 14 CFR Part 121 flight to Cleveland-Hopkins International (CLE) Airport, Ohio.

According to the pilot/operator report, radar was used to avoid weather as the aircraft approached South Bend, Indiana. There had been no pilot reports of turbulence and the company dispatcher weather package did not report turbulence. As the flight climbed through FL200, moderate turbulence was encountered for several seconds. The aircraft then entered visual meteorological conditions and smooth air.

The captain stated that the unexpected turbulence started and stopped so quickly that he did not have time to warn the flight attendants. A flight attendant in the aft galley fell to the floor injuring her back. A paramedic on the flight assisted the flight attendant. The seat belt sign was illuminated at the time the turbulence was encountered.

The captain made the decision to continue to their destination because the weather they had passed through was getting worse, and the flight attendant's injury was not thought to be severe. As the flight approached Cleveland (CLE) thunderstorms were developing over the airport causing landing delays, so the flight was diverted to Detroit Metropolitan Wayne County Airport, Detroit, Michigan. Paramedics met the airplane at the gate and transported the flight attendant to the hospital.

Aircraft

Registration
N60SW
Reported as
Boeing 737-2H4
Category
Airplane
Serial number
21812
Engine
P&W JT8D-9(A), 14,500 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Registered owner
Southwest Airlines, Co.
Airworthiness certificate
Standard, Normal
Departed
MDW · Chicago, IL
Destination
CLE · Cleveland, OH
Flight plan
IFR

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
40
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
8,000 total · 5,000 in this make and model · 3,500 as pilot in command · 260 in the last 90 days · 85 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Altimeter
29.00 inHg