DCA12CA149

NTSB accident investigation · Airbus Industrie A330-323 · Sophia, NC · September 18, 2012

Accident · Serious injuriesData collectionFinal report
Date
September 18, 2012, 12:30 local (16:30 UTC)
Place
Sophia, NC
Injuries
1 serious, 158 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N273AYAirbus Industrie A330-323
Defining event
Enroute-descent: Turbulence encounter
Weather
Visual (VMC) · Day
Status
Completed · report April 3, 2013
Report
Approved by Office Director
NTSB office
Major Investigations Division
FAA report
20120918023459A
Case key
85132

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

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Probable cause

an encounter with moderate turbulence while the flight attendant was securing the cabin for arrival.

Findings · 1

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.

Turbulence: convective turbulenceEnvironmental issues › Conditions/weather/phenomena · Effect on personnelAirbus Industrie A330-323: 2 casesAll aircraft: 145 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

On September 18th, 2012 at approximately 1230 EDT, an Airbus A330, N273AY, operated by US Airways as flight 707 from Frankfurt, Germany (FRA) to Charlotte, NC (CLT) encountered severe turbulence on descent into CLT. During the encounter, a flight attendant was seriously injured. According to the operator, on descent into CLT the flight crew received an ACARS message from the company dispatcher handling the flight. The dispatcher indicated that a SIGMET was issued for the North Carolina area with strong winds and embedded thunderstorms. The International Relief Officer (IRO) contacted the flight attendants to advise them they would be entering an area of possible turbulence in approximately 15 minutes. An announcement was also made to the passengers over the public address system advising them to remain seated and fasten their seat belts. The seat belt sign was illuminated. The airplane was descending through approximately 16,000 feet when it entered the clouds and encountered moderate turbulence. In the cabin, the flight attendants began preparing the cabin for arrival after receiving the turbulence advisory from the IRO. Several flight attendants were still out of their seats collecting service items and securing the galley when the turbulence encounter occurred. The "C" flight attendant was securing the aft galley during the encounter. She was lifted into the air, fell back down onto the cabin floor, and landed on her back. The "D" and "G" flight attendants also sustained minor injuries. The flight crew contacted the flight attendants after the encounter and were notified of their injuries. The flight crew arranged for paramedics to meet the flight and remove the injured flight attendants. The "C" flight attendant received a fracture to the distal tibia at the medial and lateral malleoli.

Factual narrative

On September 18th, 2012 at approximately 1230 EDT, an Airbus A330, N273AY, operated by US Airways as flight 707 from Frankfurt, Germany (FRA) to Charlotte, NC (CLT) encountered severe turbulence on descent into CLT. During the encounter, a flight attendant was seriously injured. According to the operator, on descent into CLT the flight crew received an ACARS message from the company dispatcher handling the flight. The dispatcher indicated that a SIGMET was issued for the North Carolina area with strong winds and embedded thunderstorms. The International Relief Officer (IRO) contacted the flight attendants to advise them they would be entering an area of possible turbulence in approximately 15 minutes. An announcement was also made to the passengers over the public address system advising them to remain seated and fasten their seat belts. The seat belt sign was illuminated. The airplane was descending through approximately 16,000 feet when it entered the clouds and encountered moderate turbulence. In the cabin, the flight attendants began preparing the cabin for arrival after receiving the turbulence advisory from the IRO. Several flight attendants were still out of their seats collecting service items and securing the galley when the turbulence encounter occurred. The "C" flight attendant was securing the aft galley during the encounter. She was lifted into the air, fell back down onto the cabin floor, and landed on her back. The "D" and "G" flight attendants also sustained minor injuries. The flight crew contacted the flight attendants after the encounter and were notified of their injuries. The flight crew arranged for paramedics to meet the flight and remove the injured flight attendants. The "C" flight attendant received a fracture to the distal tibia at the medial and lateral malleoli.

Aircraft

Registration
N273AY
Reported as
Airbus Industrie A330-323
Category
Airplane
Serial number
0337
Engines
P & W PW4168A, 68,600 lbs thrust, turbo fanP & W PW4168A, 68,600 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
US Airways Inc
Registered owner
Wells Fargo Bank Northwest Na Trustee
Airworthiness certificate
Standard, Transport
Departed
EDDF · Frankfurt
Destination
KCLT · Charlotte, NC
Flight plan
IFR
Airport
KCLT · Charlotte-Douglas

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
64
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1
Seat
Left
Flight hours
25,343 total · 4,125 in this make and model
Role
Co-pilot
Age
56
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1
Seat
Right
Flight hours
24,191 total · 1,353 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 12 knots, gusting 22
Visibility
3 statute miles
Lowest ceiling
1,700 ft broken
Temperature
72 °F, dew point 70 °F
Altimeter
29.76 inHg
Observed at
KGSO, 50 nm away

Docket · 4

The files NTSB released with the investigation on April 3, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.