Taoyuan International Airport
Aircraft Accident/Incident Report

Taoyuan Taiwan
Sunday, March 25, 2012 2:44 UTC

NTSB Narrative Summary Released at Completion of Accident

On March 25, 2012, at 1044 Taipei local time, a Boeing 747-400 airplane, registration number B-16411, operating as EVA Airways Corporation passenger flight BR702, encountered a left outflow valve malfunction and abnormal cabin altitude during enroute climb. The aircraft returned to Taoyuan International Airport without further incident. The Aviation Safety Council (ASC) of Taiwan investigated the incident. All inquiries concerning this accident should be directed to the ASC at: Aviation Safety Council 11th Floor, 200, Section 3 Beixin Road, Xindian District New Taipei City 231, Taiwan (R.O.C.) The final report number is ASC-AOR-13-03-001. The report (in Chinese only) can be downloaded at the ASC website, www.asc.gov.tw.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 3/25/2012
Event Day of the Week Sunday
Time of Event 244
Event Time Zone Coordinated Universal Time? Same as GMT
Event City Taoyuan
Event State --
Event Country TAIWAN
Zipcode of the event site --
Event Date Year 2012
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport Taoyuan International Airport
Event Location Nearest Airport ID RCTP
Indicates whether the acc/inc occurred off or on an airport --
Distance from airport in statute miles 47
Degrees magnetic from airport 45
Airport Elevation 106
Weather Briefing Completeness --
Investigator's weather source Unknown
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions --
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 383
Injury Total Serious --
Injury Total All --
Investigating Agency Foreign
NTSB Docket Number (internal use) --
NTSB Notification Source Aviation Safety Council of Tai
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Oct 20 2014 12:50PM
User who most recently changed record broda
Basic weather conditions Unknown
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number --
NTSB Number ENG12WA017
Missing Aircraft Indicator --
Federal Aviation Reg. Part --
Type of Flight Plan filed --
Flight plan Was Activated? --
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 747 - 400
Aircraft Series Identifier --
Aircraft Serial Number 29111
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
Number of Engines --
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name --
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country USA
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name --
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City --
Operator State --
Operator Country USA
Operator Zip code --
Operator Code --
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight International
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board --
Departure Point Same as Event Yes
Departure Airport Code RCTP
Departure City Taoyuan
Departure State --
Departure Country TW
Departure Time 244
Departure Time Zone UTC
Destination Same as Local Flt --
Destination Airport Code ZSPD
Destination City Shanghai Pudong
Destination State --
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 14 2014 1:57PM
User who most recently changed record jacky
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --