London Heathrow Airport
Aircraft Accident/Incident Report

Heathrow Intl Apt
Monday, May 31, 2010 7:00 UTC

NTSB Narrative Summary Released at Completion of Accident

On May 31, 2010, a Cathay Pacific Boeing 747-400F, B-HKH, experienced a flap retraction anomaly after landing at London Heathrow International Airport (LHR), London, United Kingdom. The incident is being investigated by the British Air Accidents Investigation Branch (AAIB). As the state of design and manufacture, the NTSB has designated a U.S. Accredited Representative to assist the AAIB in their investigation. All inquiries should be directed to: Air Accidents Investigation Branch Department of Environment, Transport and the Regions Berkshire Copse Road Aldershot Hants GU11 2HH United Kingdom E-mail: enquiries@aaib.gov.uk Website: http://www.dft.gov.uk

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 5/31/2010
Event Day of the Week Monday
Time of Event 700
Event Time Zone Coordinated Universal Time? Same as GMT
Event City Heathrow Intl Apt
Event State --
Event Country --
Zipcode of the event site --
Event Date Year 2010
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport London Heathrow
Event Location Nearest Airport ID LHR
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
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 --
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All --
Investigating Agency Foreign
NTSB Docket Number (internal use) --
NTSB Notification Source British Air Accidents Investig
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 2 2010 4:03PM
User who most recently changed record schd
Basic weather conditions --
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number --
NTSB Number DCA10WA065
Missing Aircraft Indicator --
Federal Aviation Reg. Part Non-U.S., Commercial
Type of Flight Plan filed Unknown
Flight plan Was Activated? Yes
Damage Minor
Aircraft Fire None
Aircraft Explosion --
Aircraft Manufacturer's Full Name BOEING
Aircraft Model 747
Aircraft Series Identifier 400F
Aircraft Serial Number --
Certified Max Gross Weight --
Aircraft Category --
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 None
Other Operator of large aircraft? No
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 Yes
Departure Point Same as Event No
Departure Airport Code --
Departure City Delhi
Departure State --
Departure Country IN
Departure Time --
Departure Time Zone --
Destination Same as Local Flt crash at destination city
Destination Airport Code LHR
Destination City Heathrow Intl Apt
Destination State --
Destination Country UK
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 2 2010 4:10PM
User who most recently changed record schd
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 --