High speed aborted takeoff and deflated tires after an A320 PIC senses a 10-15 KT loss of airspeed a...

Attributes
ACN	541701
Time
Date	200203
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Weather Elements	Windshear
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll ground other : aborted tkof
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 23000 flight time type : 900
ASRS Report	541701
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 1400
ASRS Report	541700
Events
Anomaly	ground encounters other other anomaly other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : wind shear sensor other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	other other other Other
Supplementary
Problem Areas	Airport Flight Crew Human Performance Weather
Primary Problem	Ambiguous

Narrative:

We were on takeoff roll at denver on runway 8. I felt a side load on the aircraft and the aircraft attempted to yaw left. This occurred at about 130-140 KTS. The airspeed was decreasing and the airspeed trend arrow was at the bottom of the scale. Our V1 speed was 152 KTS for a 152000 pound takeoff weight. I aborted the takeoff at about 130-140 KTS. I exited the runway at taxiway R4 and made a right turn onto taxiway right. We reported the reason for the abort to the tower as a 10-15 KT airspeed loss at about midfield. The brake temperatures were increasing very rapidly and I stopped taxiing when they got above 600 degrees. The taxi distance was only a few hundred ft. The brake temperatures increased to 900 degrees and all 4 tires deflated. Airport crash fire rescue equipment was sent to monitor our situation. Denver wind had been reported as variable at 5 KTS for several hours. Shortly after our abort the tower reported wind was 270 degrees at 6 KTS. There was virga in the area and during taxi out a denver windshear alert was canceled. Several aircraft departing runway 8 after our abort were reporting airspeed stagnation at midfield.

Original NASA ASRS Text

Title: HIGH SPD ABORTED TKOF AND DEFLATED TIRES AFTER AN A320 PIC SENSES A 10-15 KT LOSS OF AIRSPD AT DEN, CO.

Narrative: WE WERE ON TKOF ROLL AT DENVER ON RWY 8. I FELT A SIDE LOAD ON THE ACFT AND THE ACFT ATTEMPTED TO YAW L. THIS OCCURRED AT ABOUT 130-140 KTS. THE AIRSPD WAS DECREASING AND THE AIRSPD TREND ARROW WAS AT THE BOTTOM OF THE SCALE. OUR V1 SPD WAS 152 KTS FOR A 152000 LB TKOF WT. I ABORTED THE TKOF AT ABOUT 130-140 KTS. I EXITED THE RWY AT TXWY R4 AND MADE A R TURN ONTO TXWY R. WE RPTED THE REASON FOR THE ABORT TO THE TWR AS A 10-15 KT AIRSPD LOSS AT ABOUT MIDFIELD. THE BRAKE TEMPS WERE INCREASING VERY RAPIDLY AND I STOPPED TAXIING WHEN THEY GOT ABOVE 600 DEGS. THE TAXI DISTANCE WAS ONLY A FEW HUNDRED FT. THE BRAKE TEMPS INCREASED TO 900 DEGS AND ALL 4 TIRES DEFLATED. ARPT CFR WAS SENT TO MONITOR OUR SIT. DENVER WIND HAD BEEN RPTED AS VARIABLE AT 5 KTS FOR SEVERAL HRS. SHORTLY AFTER OUR ABORT THE TWR RPTED WIND WAS 270 DEGS AT 6 KTS. THERE WAS VIRGA IN THE AREA AND DURING TAXI OUT A DENVER WINDSHEAR ALERT WAS CANCELED. SEVERAL ACFT DEPARTING RWY 8 AFTER OUR ABORT WERE RPTING AIRSPD STAGNATION AT MIDFIELD.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

High speed aborted takeoff and deflated tires after an A320 PIC senses a 10-15 KT loss of airspeed at den, co.