ANA B772 near Tokyo on Aug 12th 2017, cabin did not pressurize

Last Update: August 13, 2017 / 11:03:21 GMT/Zulu time

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Incident Facts

Date of incident
Aug 12, 2017

Classification
Incident

Flight number
NH-37

Aircraft Registration
JA703A

Aircraft Type
Boeing 777-200

ICAO Type Designator
B772

An ANA All Nippon Airways Boeing 777-200, registration JA703A performing flight NH-37 from Tokyo Haneda to Osaka Itami (Japan) with 274 passengers and 11 crew, was climbing through FL150 out of Haneda Airport when the crew stopped the climb due to the cabin not pressurizing properly. The passengers oxygen masks were released. The aircraft returned to Haneda for a safe landing about 25 minutes after departure.

The airline reported the captain received an indication of a possible malfunction of the pressurization system, released the oxygen masks and returned to Haneda.

Japan's Ministry of Transport reported the crew received an alert regarding an anomaly in the cabin pressurization system.

Passengers reported there was a bang, probably from the left hand engine, during takeoff, about 15 minutes later the oxygen masks came down followed by an announcement by the captain indicating an emergency descent.

On Aug 13th 2017 the airline reported maintenance found a fractured duct running through the left main gear well under the main wing, which permitted cabin air pressure to escape.

The occurrence aircraft is still on the ground about 25 hours after landing back.
Incident Facts

Date of incident
Aug 12, 2017

Classification
Incident

Flight number
NH-37

Aircraft Registration
JA703A

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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