<< >> NASA ASRS Report 464780, February 2000

Captain of an mdt high turboprop rejected takeoff due to loss of aircraft control during takeoff roll on an unplowed snow covered icy runway.

Attributes
ACN	464780
Time
Date	200002
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : unv.airport
State Reference	PA
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : takeoff roll ground other : tkof aborted
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp pilot : multi engine
Experience	flight time last 90 days : 271 flight time total : 13300 flight time type : 7100
ASRS Report	464780
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical ground encounters other other anomaly
Independent Detector	aircraft equipment other aircraft equipment : acft controls other flight crewa
Resolutory Action	flight crew : rejected takeoff flight crew : regained aircraft control flight crew : exited adverse environment
Consequence	Other
Supplementary
Problem Areas	Weather Airport Environmental Factor
Primary Problem	Airport

Narrative:

After deicing with type 1 and type 4 fluid, we taxied out to the runway. The taxiway and runway were not plowed. The unicom advised us that the conditions were 3 inches of wet snow with a crust. During takeoff roll, I pulled the yoke back to free the nosewheel. At V1 and vr speeds, I pulled on the yoke with no response. We aborted the takeoff with no further problems. Taxiing in to the gate, we talked to operations to deice again. A passenger was not going to make his flight, so I talked with dispatch and we canceled the flight. I did not write up the abort because I felt the problem was not the aircraft, but the snow on the runway with the combination of the deice fluid. Type 4 fluid has caused previous aborts at our airline.

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Original NASA ASRS Text

Title: CAPT OF AN MDT HIGH TURBOPROP REJECTED TKOF DUE TO LOSS OF ACFT CTL DURING TKOF ROLL ON AN UNPLOWED SNOW COVERED ICY RWY.

Narrative: AFTER DEICING WITH TYPE 1 AND TYPE 4 FLUID, WE TAXIED OUT TO THE RWY. THE TXWY AND RWY WERE NOT PLOWED. THE UNICOM ADVISED US THAT THE CONDITIONS WERE 3 INCHES OF WET SNOW WITH A CRUST. DURING TKOF ROLL, I PULLED THE YOKE BACK TO FREE THE NOSEWHEEL. AT V1 AND VR SPDS, I PULLED ON THE YOKE WITH NO RESPONSE. WE ABORTED THE TKOF WITH NO FURTHER PROBS. TAXIING IN TO THE GATE, WE TALKED TO OPS TO DEICE AGAIN. A PAX WAS NOT GOING TO MAKE HIS FLT, SO I TALKED WITH DISPATCH AND WE CANCELED THE FLT. I DID NOT WRITE UP THE ABORT BECAUSE I FELT THE PROB WAS NOT THE ACFT, BUT THE SNOW ON THE RWY WITH THE COMBINATION OF THE DEICE FLUID. TYPE 4 FLUID HAS CAUSED PREVIOUS ABORTS AT OUR AIRLINE.

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.