FTW97LA215

NTSB accident investigation · Boeing 737-291A · Albuquerque, NM · June 11, 1997

Accident · Serious injuriesLimited investigationFinal report
Date
June 11, 1997, 11:35 local (17:35 UTC)
Place
Albuquerque, NM
Injuries
1 serious, 107 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N980UABoeing 737-291A
Weather
Visual (VMC) · Day
Status
Completed · report October 31, 1997
Report
Approved by Office Director
FAA report
19970611015669A
Case key
20238

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 sudden encounter with clear air 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 weatherDescent - normal
Weather condition - turbulence,clear airCause

Analysis

The airplane was descending through FL180 when the crew was advised of reported light to moderate turbulence in the area. The captain instructed passengers and flight attendants to return to their seats and fasten their seatbelts. Shortly thereafter, the airplane encountered turbulence. Before getting into her seat and restraining herself, a flight attendant was injured when she struck her back against a seat armrest. X-rays later revealed that she had fractured a bone in her shoulder.

Factual narrative

On June 11, 1997, approximately 1135 mountain daylight time, a Boeing 737-291A, N980UA, operated by United Air Lines, Inc., as flight 441, sustained no damage when it encountered clear air turbulence while on descent to Albuquerque, New Mexico. One flight attendant was seriously injured, but there were no injuries to the airline transport rated captain and first officer, two other flight attendants, and 103 passengers. Visual meteorological conditions prevailed, and an IFR flight plan had been filed for the scheduled domestic passenger flight operated under Title 14 CFR Part 121. The flight originated at Denver, Colorado, approximately 1035.

The following is based on information provided by a United Air Lines safety department spokesman. The airplane was descending through FL180 when the crew was advised of light to moderate turbulence. The captain instructed passengers and flight attendants to return to their seats and fasten their seatbelts. Shortly thereafter, the airplane encountered turbulence. Prior to getting into her seat and restraining herself, a flight attendant was injured when she struck her back against a seat armrest. Paramedics who examined her at the airport said she had sustained a contusion. The flight attendant continued in her duties on the return flight to Denver. She was later examined by her personal physician, and X-rays indicated she had fractured a bone in her shoulder.

Aircraft

Registration
N980UA
Reported as
Boeing 737-291A
Category
Airplane
Serial number
21545
Airframe hours
49,886
Engine
P&W JT8D-9A, 14,500 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Registered owner
United Air Lines
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · April 23, 1997 · 229 hours before
Departed
DEN · Denver, CO
Destination
ABQ
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
43
Certificates
Flight instructor, Airline transport, Flight engineer, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
12,000 total · 80 in this make and model · 10,000 as pilot in command · 78 in the last 90 days · 35 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
ABQ, 5 nm away

FAA reports on this event · 1

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