Aircraft Accident/Incident Report

Payson, Arizona 85541
Thursday, June 5, 2003 15:28 MST

NTSB Narrative Summary Released at Completion of Accident

About 25,000 feet during climb out, a flight attendant was injured during an encounter with moderate turbulence. The flight attendant was out of her seat in the aft galley preparing to provide cabin service. The flight crew deviated to the closest airport, the flight attendant was transported to the hospital, and the flight departed 30 minutes later for its intended destination. Prior to departure, the captain was provided with a weather package that indicated there would be a buildup of cumulonimbus clouds and thunderstorm activity up to 33,000 feet along their route of flight. During the climb out, the flight crew reported visually seeing the cumulus buildup, and verified it via their onboard weather radar. The flight crew asked for, and received, an ATC clearance to deviate to the right around the building cumulonimbus clouds. The deviation to the right of course placed the flight's path directly downwind of the buildups and potentially in the vicinity of turbulent eddies. The in-flight turbulence event occurred after the flight diverted around a primary buildup and entered into a secondary buildup that was partially masked by the primary buildup.

NTSB Probable Cause Narrative

The flight's encounter with convectively induced turbulence associated with developing thunderstorms while the flight crew attempted to deviate around an area of adverse weather. The turbulence event occurred while the crew was attempting to maneuver around the identified primary buildup, and a secondary system that was partially masked by the primary cell visually and on radar was encountered.

Event Information

Type of Event Accident
Event Date 6/5/2003
Event Day of the Week Thursday
Time of Event 1528
Event Time Zone Mountain Standard Time
Event City Payson
Event State ARIZONA
Event Country --
Zipcode of the event site 85541
Event Date Year 2003
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 341541N
Event Location Longitude 1112036W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1505 Mountain Standard Time
Direction of event from weather observation facility (degrees) 30
Weather Observation Facility ID INW
Elevation of weather observation facility 4941
Distance of event from weather observation facility (units?) 54
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 35
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.73
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 139
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 19195
NTSB Notification Source FAA
NTSB Notification Date Jun 5 2003 12:00AM
NTSB Notification Time 2020
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Feb 28 2006 12:35PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-SDL-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N644AW
NTSB Number LAX03LA181
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Airbus Industrie
Aircraft Model A320-321
Aircraft Series Identifier --
Aircraft Serial Number 317
Certified Max Gross Weight 166400
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 156
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Apr 1 2002 12:00AM
Airframe hours since last inspection 4135.2
Airframe Hours 34545.5
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Wilmington Trust Company
Aircraft Owner Street Address Rodney Square North
Aircraft Owner City Wilmington
Aircraft Owner State DE
Aircraft Owner Country USA
Aircraft Owner Zipcode 19890
Operator is an individual? No
Operator Name America West Airlines, Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 4000 East Sky Harbor
Operator City Phoenix
Operator State AZ
Operator Country USA
Operator Zip code 85034
Operator Code AWXA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code PHX
Departure City Phoenix
Departure State AZ
Departure Country USA
Departure Time 1512
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code HFD
Destination City Hartford
Destination State CT
Destination Country USA
Specific Phase of Flight Climb - to cruise
Report sent to ICAO? Yes
Evacuation occurred No
Date of most recent change to record Nov 9 2005 6:03PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --