CHI91LA115

NTSB accident investigation · Boeing 727-222 · Buffalo, NY · March 23, 1991

Accident · Serious injuriesLimited investigationFinal report
Date
March 23, 1991, 18:15 local (23:15 UTC)
Place
Buffalo, NY
Injuries
1 serious, 3 minor, 39 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N7449UBoeing 727-222
Weather
Visual (VMC) · Dusk
Status
Completed · report February 8, 1993
Report
Approved by Office Director
FAA report
19910323009299A
Case key
15029

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

A clear air turbulence encounter.

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.

Altitude deviation,uncontrolledCruise
Weather condition - turbulence,clear airCause

Analysis

The aircraft was in cruise flight at FL 310 when it encountered clear air turbulence. A flight attendant in the aft galley was seriously injured. Two flight attendants in the cabin, and a passenger who was in the lavatory received minor injuries. The weather briefing contained a forecast for the possibility of turbulence. The flight was diverted to an alternate airport to provide medical assistance to the injured persons.

Aircraft

Registration
N7449U
Reported as
Boeing 727-222
Category
Airplane
Serial number
21903
Engine
P&W JT8D-15, 15,500 lbs thrust, turbo fan
Damage
No damage
Flight
Part 121
Operator
United Airlines
Airworthiness certificate
Standard, Transport
Last inspection
Unknown · January 2, 2000
Departed
MHT · Manchester, NH
Destination
ORD · Chicago, IL
Flight plan
IFR
Airport
NONE

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
59
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Flight hours
16,033 total · 10,200 as pilot in command · 151 in the last 90 days · 67 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dusk
Wind
230° at 15 knots
Visibility
15 statute miles
Lowest ceiling
5,500 ft overcast
Temperature
48 °F, dew point 43 °F
Altimeter
29.00 inHg
Observed at
BUF, 30 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.