Runway excursion on takeoff. Aborted.

Attributes
ACN	114975
Time
Date	198906
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : day
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain observation : company check pilot oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 190 flight time total : 9000 flight time type : 2000
ASRS Report	114975
Person 2
Affiliation	company : air carrier
Function	flight crew : captain instruction : trainee
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 2700
ASRS Report	114811
Events
Anomaly	other anomaly other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : regained aircraft control flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was PIC flying in the right seat giving a new captain IOE. We were cleared for takeoff on 24L at day at night. All indications were normal until I called '70 KTS' and the IOE captain transitioned from nose steering to rudders. The aircraft veered hard left. I said 'where are you going?' when we were about 30' left of centerline pulling increasingly left, I applied full right rudder with little or no effect. I then pulled the right power lever into reverse. This helped and the IOE captain engaged the nose steering. The left main tire may have gone off the left side of the runway. The IOE captain steered the aircraft back to the center of the runway, slowed and we taxied off the runway onto a taxiway and shut the aircraft down. The IOE captain admitted being slow re-engaging the nose steering. I could have applied right differential braking but given the nature of type brakes, they grab, I thought I might compound the problem. Maintenance found worn out parts and excessive play in the nose steering system. Aircraft was not damaged. There were no injuries. There was no property damage.

Original NASA ASRS Text

Title: RWY EXCURSION ON TKOF. ABORTED.

Narrative: I WAS PIC FLYING IN THE RIGHT SEAT GIVING A NEW CAPT IOE. WE WERE CLRED FOR TKOF ON 24L AT DAY AT NIGHT. ALL INDICATIONS WERE NORMAL UNTIL I CALLED '70 KTS' AND THE IOE CAPT TRANSITIONED FROM NOSE STEERING TO RUDDERS. THE ACFT VEERED HARD LEFT. I SAID 'WHERE ARE YOU GOING?' WHEN WE WERE ABOUT 30' LEFT OF CENTERLINE PULLING INCREASINGLY LEFT, I APPLIED FULL RIGHT RUDDER WITH LITTLE OR NO EFFECT. I THEN PULLED THE RIGHT POWER LEVER INTO REVERSE. THIS HELPED AND THE IOE CAPT ENGAGED THE NOSE STEERING. THE LEFT MAIN TIRE MAY HAVE GONE OFF THE LEFT SIDE OF THE RWY. THE IOE CAPT STEERED THE ACFT BACK TO THE CENTER OF THE RWY, SLOWED AND WE TAXIED OFF THE RWY ONTO A TXWY AND SHUT THE ACFT DOWN. THE IOE CAPT ADMITTED BEING SLOW RE-ENGAGING THE NOSE STEERING. I COULD HAVE APPLIED RIGHT DIFFERENTIAL BRAKING BUT GIVEN THE NATURE OF TYPE BRAKES, THEY GRAB, I THOUGHT I MIGHT COMPOUND THE PROBLEM. MAINT FOUND WORN OUT PARTS AND EXCESSIVE PLAY IN THE NOSE STEERING SYSTEM. ACFT WAS NOT DAMAGED. THERE WERE NO INJURIES. THERE WAS NO PROPERTY DAMAGE.

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.