Event Details

Title:Incorrect airspeed indications, UPS 747-200 at Dublin Airport, May 12, 2000
Micro summary:Static drain ports yielded very low airspeed readings in an engineering test flight of this 747-200.
Event Time:2000-05-12 at 1325 UTC
File Name:2000-05-12-IE.pdf
Publishing Agency:Air Accident Investigation Unit (AAIU)
Publishing Country:Ireland
Report number:2004/004
Site of event:Dublin Airport
Departure:Dublin Airport, Dublin, Ireland
Destination:Dublin Airport, Dublin, Ireland
Airplane Type(s):Boeing 747-200
Flight Phase:Takeoff
Operator(s):United Parcel Service (UPS)
Type of flight:Engineering Test Flight
Serious Injuries:0
Other Injuries:0
Executive Summary:The aircraft took off from Dublin Airport for a check flight following the completion of “C” check maintenance at Team FLS. After take-off, significant airframe vibration was encountered. The crew then deduced that both airspeed indicators were under-reading significantly. Following declaration of an emergency, and trouble-shooting by the crew off the east coast of Ireland, the aircraft returned safely to Dublin. After landing it was discovered that the flap system had suffered damage. It was found that the static drain ports in the Avionics and Electrical (A&E) bay, connected to both the Captain’s and the First Officer’s instruments, were left open after maintenance. This resulted in both airspeed indicators under-reading by a significant amount.
Learning Keywords:Operations - Maintenance
Systems - Flight Controls - Spoilers - Slats - Flaps
Systems - Flight Instruments
Systems - Pitot/Static System
Close match:Stall on takeoff, Birgenair, Boeing 757, TC-GEN
Loss of airspeed displays, Serious incident, 05.04.1998, near Frankfurt/Main Airport, to an Airbus A320-200
In-flight loss of both engines, McDonnell Douglas MD-82, June 4, 2002
Runway Overrun Following Rejected Takeoff, Continental Airlines Flight 795, McDonnell Douglas MD-82, N18835, Laguardia Airport, Flushing, New York, March 2, 1994
Stall on takeoff, Air Florida, Inc., Boeing 737-222, N62AF, Collision With 14th Street Bridge, Near Washington National Airport, Washington, D.C., January 13, 1982
In-flight upset, Northwest Airlines, Inc., Boeing 727-251, N274US, Near Thiells, New York, December 1, 1974
Erroneous airspeed indications/stickshaker, Boeing 717-200, VH-NHX, February 28, 2006
Stall in climb, Boeing 757-200, TF-FII, October 20, 2002


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