ASN Wikibase Occurrence # 247198
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| Date: | Thursday 24 February 2005 |
| Time: | 18:05 |
| Type: |  Boeing 737-4H6 |
| Owner/operator: | Skynet Asia Airways |
| Registration: | JA737D |
| MSN: | 27168/2435 |
| Year of manufacture: | 1993 |
| Fatalities: | Fatalities: 0 / Occupants: 108 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | 170 km ENE of Kushimoto VORTAC -
 Japan
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Tokyo International Airport |
| Miyazaki Airport | |
| Investigating agency: | ARAIC |
| Confidence Rating: |  Accident investigation report completed and information captured |
Designated as Flight 119, the Boeing 737-400 airplane, JA737D, operated by Skynet Asia Airways Co., Ltd., took off from Tokyo International Airport at 17:34 LT for Miyazaki Airport on regularly scheduled service.
About 18:05, at approx. 33,700 feet above the sea, approx. 170 km east-northeast of Kushimoto VORTAC, instrument indication revealed a drop in cabin pressure and the oxygen masks in the cabin were automatically deployed. After a subsequent emergency descent, the airplane landed at Miyazaki Airport at 19:15.
A total of 108 people were on board, consisting of the pilot-in-command, four other crewmembers, and 103 passengers (one of whom was an infant). One of the passengers temporarily felt bad.
There was no damage to the aircraft.
PROBABLE CAUSE:
It is considered that the serious incident was caused by rapid cabin depressurization that resulted from sudden and excessive opening of the cabin pressurization outflow valve during the flight.
While it was not possible to establish the cause of the sudden excessive opening of the cabin pressurization outflow valve, it is considered possible that the contamination deposit on a circuit board of the cabin pressurization system deteriorated the board over time to the extent that it caused the electrical circuitry to malfunction.
Accident investigation:
 |
|
Sources:
JTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jan-2021 20:30 | harro | Added |
Corrections or additions? ... Edit this accident description
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