DEN05LA090

NTSB accident investigation · Airbus Industrie A-319-114 · Scottsbluff, NE · June 11, 2005

Accident · Serious injuriesLimited investigationFinal report
Date
June 10, 2005, 18:12 local (Jun 11, 2005, 00:12 UTC)
Place
Scottsbluff, NE
Injuries
1 serious, 126 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N302NBAirbus Industrie A-319-114
Weather
Visual (VMC)
Status
Completed · report October 27, 2005
Report
Approved by Office Director
Parties
Denver, CO
FAA report
20050610013729A
Case key
61741

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

the inflight encounter with moderate 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 weatherCruise
Weather condition - turbulence(thunderstorms)Cause

Analysis

The aircraft was flying in an area of thunderstorms with the nearest cell 40 miles to the left of course. The captain said the top of a thunderstorm cell was "not painting on radar." They had been expecting light chop but encountered moderate turbulence instead. When the airplane encountered the turbulence, a flight attendant struck the ceiling and a beverage cart. The seat belt light was illuminated at the time. An emergency was declared and the aircraft landed at Denver without further incident. The injured flight attendant was taken to a hospital. An AIRMET for "occasional moderate turbulence between FL270 and FL400 associated with jet stream windshear" had been in effect for the area. There were no PIREPS (pilot reports) of turbulence before the accident, but in the 40 minutes after the accident, there were 5 pilot reports of moderate turbulence at altitudes between FL320 and FL380.

Factual narrative

On June 10, at 1812 mountain daylight time an Airbus Industrie A-319-114, N302NB, operated by Northwest Air Lines as flight 563, encountered turbulence near Scottsbluff, Nebraska, while descending through 34,000 feet msl. Visual meteorological conditions prevailed at the time of the accident. The flight was being conducted on an IFR flight plan under the provisions of 14 CFR Part 121. One flight attendant was seriously injured. The remaining 2 pilots, 4 flight attendants, and 120 passengers aboard were not injured. The flight originated at Minneapolis, Minnesota, and was en route to Denver, Colorado.

The aircraft was flying in an area of thunderstorms with the nearest cell 40 miles to the left of course. The captain said the top of a thunderstorm cell was "not painting on radar." They had been expecting light chop but encountered moderate turbulence instead. When the airplane encountered the turbulence, a flight attendant struck the ceiling, and a beverage cart. The seat belt sign was illuminated at the time. An emergency was declared and the aircraft landed at Denver without further incident. The injured flight attendant was taken to a hospital. According to Northwest Airlines, the flight attendant's injuries included two broken ribs, a liver contusion, and an intestinal blockage.

According to the Denver Automated Flight Service Station (AFSS), an AIRMET for "occasional moderate turbulence between FL270 and FL400 associated with jet stream windshear" had been in effect for the area. There were no PIREPS (pilot reports) of turbulence before the accident, but in the 40 minutes after the accident, there were 5 pilot reports of moderate turbulence at altitudes between FL320 and FL380. show that an AIRMET for turbulence existed that covered the area where the aircraft encountered the turbulence.

Aircraft

Registration
N302NB
Reported as
Airbus Industrie A-319-114
Category
Airplane
Serial number
1062
Engines
CFM International CFM56-5-A5, turbo fanCFM International CFM56-5-A5, turbo fan
Damage
Minor damage
Flight
Part 121
Registered owner
Northwest Airlines Inc
Airworthiness certificate
Standard, Transport
Departed
MSP · Minneapolis, MN
Destination
DEN · Denver, CO
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
51
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
November 1, 2004
Seat
Left
Flight hours
10,050 total · 970 in this make and model · 970 as pilot in command
Role
Co-pilot
Age
48
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
April 1, 2005
Seat
Right
Flight hours
4,625 total · 1,586 in this make and model

Weather

Conditions
Visual (VMC)
Wind
320° at 12 knots
Visibility
10 statute miles
Lowest ceiling
1,400 ft broken
Temperature
54 °F, dew point 48 °F
Altimeter
29.87 inHg
Observed at
DEN

FAA reports on this event · 1

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