Air carrier medium large transport loss of aircraft control making high speed turnoff at den.

Attributes
ACN	119907
Time
Date	198908
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground other : taxi landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 2300
ASRS Report	119907
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 11000
ASRS Report	119913
Events
Anomaly	other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

On landing rollout, tower asked us to expedite clearing the runway for another aircraft behind us. Rollout and braking appeared normal up to this point, although the ground was wet from recent rainfall. After making a normal initial turn toward the high speed turnoff, we appeared to loose some directional control and the anti-skid started to cycle, even though the brake pedal pressure remained the same. The aircraft speed at the time of the turnoff was not excessive, and there did not visually appear to be any rubber build-up on the surface. The aircraft did not depart the paved portion, but the left main tires appeared to penetrate a row of taxi lights, but did not appear to contact any. Further inspection by maintenance personnel, showed no evidence of contact either. The control tower was notified at the time of the occurrence. We suspect hydroplaning, even though at the time of the occurrence, I did not expect it.

Original NASA ASRS Text

Title: ACR MLG LOSS OF ACFT CTL MAKING HIGH SPEED TURNOFF AT DEN.

Narrative: ON LNDG ROLLOUT, TWR ASKED US TO EXPEDITE CLEARING THE RWY FOR ANOTHER ACFT BEHIND US. ROLLOUT AND BRAKING APPEARED NORMAL UP TO THIS POINT, ALTHOUGH THE GND WAS WET FROM RECENT RAINFALL. AFTER MAKING A NORMAL INITIAL TURN TOWARD THE HIGH SPEED TURNOFF, WE APPEARED TO LOOSE SOME DIRECTIONAL CONTROL AND THE ANTI-SKID STARTED TO CYCLE, EVEN THOUGH THE BRAKE PEDAL PRESSURE REMAINED THE SAME. THE ACFT SPEED AT THE TIME OF THE TURNOFF WAS NOT EXCESSIVE, AND THERE DID NOT VISUALLY APPEAR TO BE ANY RUBBER BUILD-UP ON THE SURFACE. THE ACFT DID NOT DEPART THE PAVED PORTION, BUT THE LEFT MAIN TIRES APPEARED TO PENETRATE A ROW OF TAXI LIGHTS, BUT DID NOT APPEAR TO CONTACT ANY. FURTHER INSPECTION BY MAINT PERSONNEL, SHOWED NO EVIDENCE OF CONTACT EITHER. THE CTL TWR WAS NOTIFIED AT THE TIME OF THE OCCURRENCE. WE SUSPECT HYDROPLANING, EVEN THOUGH AT THE TIME OF THE OCCURRENCE, I DID NOT EXPECT IT.

Data retrieved from NASA's ASRS site as of August 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.