United B772 at Amsterdam on Sep 2nd 2022, rejected takeoff due to smoke on board

Last Update: November 29, 2023 / 12:08:26 GMT/Zulu time

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Incident Facts

Date of incident
Sep 2, 2022

Classification
Incident

Airline
United

Flight number
UA-71

Aircraft Registration
N787UA

Aircraft Type
Boeing 777-200

ICAO Type Designator
B772

A United Boeing 777-200, registration N787UA performing flight UA-71 from Amsterdam (Netherlands) to Newark,NJ (USA), was accelerating for takeoff from Amsterdam's runway 36L when the crew rejected takeoff at high speed (above 90 knots over ground) reporting smoke on board. The aircraft slowed safely and returned to the apron.

Netherland's Onderzoeksraad (DSB) have opened an investigation into the occurrence.

The Aviation Herald received information that there has been damage to the aircraft, not visible from the outside of the aircraft.

On Nov 29th 2023 the Onderzoeksraad reported that the investigation was aborted after establishing the facts. The DSB summarized the sequence of events:

During the takeoff roll, the flight crew received a ‘Bleed Air Leak’ message on the Engine Indicating and Crew Alerting System (EICAS), followed by ‘Bleed Air Failure’ message, shortly after. At that moment, they also received a call through the intercom from one of the cabin crew members and were informed of the presence of dust and debris in the passenger cabin.

The pilots decided to abort the takeoff at approximately 90 knots indicated airspeed. Several passenger heard a loud bang, just before the aircraft aborted its takeoff. They subsequently noticed dust and debris in the passenger cabin compartment as well as hot air near the ventilation outlets at floor level.

...

Investigation revealed that a titanium pneumatic duct, located in the left sidewall near the aft cargo compartment, had ruptured. The material insulating the duct was also damaged, which resulted in dust and debris from ducting insulation entering the passenger compartment through the ventilation outlets near the passenger floor.

According to Boeing, the duct is wrapped with a high temperature air duct insulation blanket. In addition to the insulation around the duct, there were insulation blankets along the interior of the fuselage adjacent to the duct rupture. All insulation material used in the area of the rupture is fiberglass-based insulation material.
Aircraft Registration Data
Registration mark
N787UA
Country of Registration
United States
Date of Registration
Manufacturer
BOEING
Aircraft Model / Type
777-222
Number of Seats
ICAO Aircraft Type
B772
Year of Manufacture
Serial Number
Aircraft Address / Mode S Code (HEX)
Engine Count
Engine Manufacturer
Engine Model
Engine Type
Pounds of Thrust
Main Owner
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Incident Facts

Date of incident
Sep 2, 2022

Classification
Incident

Airline
United

Flight number
UA-71

Aircraft Registration
N787UA

Aircraft Type
Boeing 777-200

ICAO Type Designator
B772

This article is published under license from Avherald.com. © of text by Avherald.com.
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