ASN Wikibase Occurrence # 247167
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Thursday 29 July 2004 |
| Time: | 11:33 |
| Type: |  Boeing 747-222B |
| Owner/operator: | Northwest Airlines |
| Registration: | N645NW |
| MSN: | 23736/673 |
| Year of manufacture: | 1987 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | near Osaka-Kansai International Airport -
 Japan
|
| Phase: | Initial climb |
| Nature: | Cargo |
| Departure airport: | Osaka-Kansai International Airport |
| Seoul-Incheon International Airport | |
| Investigating agency: | ARAIC |
| Confidence Rating: |  Accident investigation report completed and information captured |
On Thursday July 29, 2004, a Boeing 747-200B of Northwest Airlines (NWA), registration N645NW, departed Kansai International Airport Osaka Japan at 11:32JST operated as a scheduled cargo flight NWA905 to Seoul-Incheon International Airport Korea. Just after taking off at around 11:33 local time, instrument indications showed an abnormal rise in the No. 1 (left outer) engine’s exhaust gas temperature, and because the No. 1 engine stopped, the aircraft returned to Kansai International Airport where it made an uneventful landed at 11:44. After landing, damage was found to the lower cowl of the No. 1 engine. There were three persons on board N645NW —the captain and two other crewmembers. There were no injuries to those on board.
PROBABLE CAUSE:
In this serious incident, the probable cause was that while the aircraft was climbing, the lenticular seal of the HPT section of the No.1 engine was failed and, a portion of the lenticular seal separated, impacting the turbine blades allowing broken fragments of the lenticular seal and/or turbine blades to exit through the engine case.
It is considered that the damage to the lenticular seal was the result of heat stress due to insufficient cooling causing a crack to initiate and grow.
Accident investigation:
 |
|
Sources:
JTSB
Images:
Photo: ARAIC
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Jan-2021 20:16 | harro | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation