Eastar B737 near Seoul on Oct 5th 2012, engine shut down in flight
Last Update: June 30, 2015 / 15:22:23 GMT/Zulu time
Incident Facts
Date of incident
Oct 5, 2012
Classification
Report
Airline
Eastar Jet
Flight number
ZE-223
Departure
Seoul Gimpo, South Korea
Destination
Jeju, South Korea
Aircraft Registration
HL8207
Aircraft Type
Boeing 737-700
ICAO Type Designator
B737
South Korea's ARAIB released their final report in Korean concluding the probable cause of the occurrence rated an accident was:
A high pressure turbine blade of the right hand #2 engine fractured and separated causing substantial damage downstream to the engine and causing the engine to fail and resulting in an inflight shutdown of the engine.
The ARAIB reported the right hand engine had accumulated 30,294 flight hours in 23,491 flight cycles total and 7,502 flight hours in 8,516 flight cycles since last overhaul.
A post flight examination of the engine after landing back revealed all blades of the stage 1 high pressure turbine (HPT) as well as all blades of the stage 1 low pressure turbine (LPT) had fractured and separated, the turbine exhaust nozzle showed impact damage by metal debris ejected through the exhaust, the HPT and LPT stator as well as guide vanes showed substantial damage.
The ARAIB analysed that the blades, including the HPT stage 1 blade #1 (of 80) starting the engine failure, were permitted to be used for 25,000 flight cycles, 1,509 flight cycles were thus left for using the blades, however, the failure occurred before that limit.
The ARAIB analysed that the blades need to undergo inspection every 1600 flight cycles, the last inspection had occurred three months prior to the occurrence, the engine had accumulated 394 flight cycles since. During that inspection no cracks or corrosion were detected, the blades and nozzle guide vanes were found in a generally good condition.
The ARAIB analysed that the coating of the #1 blade left was insufficient to protect the blade, in addition an inclusion of sulphur oxide was found in the coating meaning the protection against corrosion was compromised. As result, a cavity formed and a number of fatigue cracks started to develop below the platform of the blade until the blade fractured off with only the root remaining attached to the rotor.
Incident Facts
Date of incident
Oct 5, 2012
Classification
Report
Airline
Eastar Jet
Flight number
ZE-223
Departure
Seoul Gimpo, South Korea
Destination
Jeju, South Korea
Aircraft Registration
HL8207
Aircraft Type
Boeing 737-700
ICAO Type Designator
B737
This article is published under license from Avherald.com. © of text by Avherald.com.
Article source
You can read 2 more free articles without a subscription.
Subscribe now and continue reading without any limits!
Read unlimited articles and receive our daily update briefing. Gain better insights into what is happening in commercial aviation safety.
Send tip
Support AeroInside by sending a small tip amount.
Related articles
Fleet type match
Eastar B738 at Ibaraki on Aug 22nd 2019, approached wrong runway
An Eastar Jet Boeing 737-800, registration HL8052 performing flight ZE-681 from Seoul (South Korea) to Ibaraki (Japan), was cleared for the approach…
Fleet type match
Eastar B738 at Sapporo on Sep 1st 2017, gear well fire indication
A Eastar Jet Boeing 737-800, registration HL8058 performing flight ZE-623 from Seoul (South Korea) to Sapporo (Japan) with 123 passenges and 6 crew,…
Newest articles
Fleet type match
ANA B738 at Yonago on Apr 7th 2024, GPWS saves the day
An ANA All Nippon Airways Boeing 737-800, registration JA69AN performing flight NH-389 from Tokyo Haneda to Yonago (Japan), was on a circling…
Fleet type match
ANA B788 at Sapporo on Apr 24th 2024, hydraulic leak after landing
An ANA All Nippon Airways Boeing 787-8, registration JA804A performing flight NH-71 from Tokyo Haneda to Sapporo Chitose (Japan) with 213 people on…
Subscribe today
Are you researching aviation incidents? Get access to AeroInside Insights, unlimited read access and receive the daily newsletter.
Pick your plan and subscribePartner
A new way to document and demonstrate airworthiness compliance and aircraft value. Find out more.
ELITE Simulation Solutions is a leading global provider of Flight Simulation Training Devices, IFR training software as well as flight controls and related services. Find out more.
Your regulation partner, specialists in aviation safety and compliance; providing training, auditing, and consultancy services. Find out more.
AeroInside Blog
Popular aircraft
Airbus A320Boeing 737-800
Boeing 737-800 MAX
Popular airlines
American AirlinesUnited
Delta
Air Canada
Lufthansa
British Airways