Casualties unknown

Passenger Fractures Leg During Turbulence After Ignoring Seat Belt Instructions (N9040U)

Salisbury, MD, US

On June 26, 1988, a Boeing 737 (registration N9040U) operated by United Airlines was involved in an aviation accident near Salisbury, MD. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards
Boeing 737
Photo: San Diego Air & Space Museum Archives / Public domain, via Wikimedia Commons

After a severe weather warning, the captain instructed passengers to be seated. A mother and daughter left their seats for a lavatory trip; during return, turbulence caused the mother to fracture her leg.

Incident Overview

Before the flight departed, the crew received a severe weather warning concerning conditions along the intended route. In response, the captain advised the flight attendants to prepare for early completion of passenger service and to be seated before the descent. Prior to encountering turbulence, the captain activated the seat belt sign and made an announcement instructing passengers to remain seated with their belts fastened. The flight attendants subsequently issued a similar announcement.

Despite these warnings, a female passenger and her four-year-old daughter vacated their seats to allow the child to use the lavatory located at the rear of the aircraft. As they were returning to their seats, the airplane encountered turbulence. During this event, the female passenger sustained a fractured leg.

No other injuries or damage were reported in the source. The aircraft continued its flight without further incident.

Crew Actions

The flight crew had proactively informed cabin crew about the weather warning and the need for early seating. The captain's actions included turning on the seat belt sign and making a public address. The flight attendants reinforced the message with their own announcement. These measures were taken to ensure passenger safety in anticipation of potential turbulence.

Passenger Behavior

Despite the clear warnings and announcements, the passenger and her child disregarded the instructions to remain seated. The decision to leave their seats for a lavatory visit occurred after the seat belt sign had been illuminated and announcements had been made. The timing of their movement coincided with the onset of turbulence, leading to the injury.

Outcome

The female passenger suffered a fractured leg as a result of the turbulence encounter. The source does not provide further details on medical treatment or whether the flight was diverted. The investigation report focused on the sequence of events leading to the injury.

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Frequently asked questions

What happened in the 26 Jun 1988 Boeing 737 accident near Salisbury, MD?

After a severe weather warning, the captain instructed passengers to be seated. A mother and daughter left their seats for a lavatory trip; during return, turbulence caused the mother to fracture her leg.

What aircraft was involved and where did it happen?

The accident on 26 Jun 1988 involved a Boeing 737, registration N9040U, operated by United Airlines, at Salisbury, MD.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X25883. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.