Incident Overview

Date: Saturday 20 May 2000
Aircraft Type: Boeing 737-5H4
Owner/operator: Southwest Airlines
Registration Number: N522SW
Location: Nashville International Airport, TN (BNA/KBNA) – ÿ United States of America
Phase of Flight: Unknown
Casualties: Fatalities: 0 / Occupants: 124
Component Affected: Terminal electrical power infrastructure (specifically the terminal’s lighting and jetway power).Terminal electrical power infrastructure (specifically the terminal’s lighting and jetway power).
Investigating Agency: NTSBNTSB
Category: Accident
A Southwest Airlines Boeing 737-500 experienced a power outage at the Nashville International Airport terminal due to transiting thunderstorms and lightning. The outage lasted approximately 1 hour 30 minutes, during which the aircraft cleared the runway after landing. A passenger left his seat, assaulted a flight attendant, and jumped out of the aft cabin passenger-loading door, resulting in a wrist fracture. The incident was triggered by an onboard disturbance and self-evacuation, exacerbated by insufficient backup electrical power to the terminal.A Southwest Airlines Boeing 737-500 experienced a power outage at the Nashville International Airport terminal due to transiting thunderstorms and lightning. The outage lasted approximately 1 hour 30 minutes, during which the aircraft cleared the runway after landing. A passenger left his seat, assaulted a flight attendant, and jumped out of the aft cabin passenger-loading door, resulting in a wrist fracture. The incident was triggered by an onboard disturbance and self-evacuation, exacerbated by insufficient backup electrical power to the terminal.

Description

The Nashville International Airport terminal sustained a complete electrical power outage due to transiting thunderstorms and lightning. Main terminal lighting and jetway power was interrupted for about 1 hour 30 minutes. During that time, a Southwest Airlines Boeing 737-500 cleared the runway after landing, and the pilot taxied to the parking ramp to await the arrival of portable airstairs. After about an hour delay, a passenger left his seat, assaulted a flight attendant, and jumped out of the aft cabin passenger-loading door. He sustained a fracture of the left wrist, and was picked up and transported to a medical clinic by the airport police. Probable Cause: The passenger’s onboard disturbance and self-evacuation from the parked aircraft, resulting in injuries. A factor in the accident was the lack of backup electrical power to the terminal which necessitated a lengthy ground hold.

Source of Information

https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X21079&key=1https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X21079&key=1

Primary Cause

Insufficient backup electrical power to the terminal.Insufficient backup electrical power to the terminal.

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