Runway excursion experienced by an ATP pilot flying his bellanca into 5t6, NM.

Attributes
ACN	449988
Time
Date	199909
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : 5t6.airport
State Reference	NM
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Viking
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 15 flight time total : 4500 flight time type : 50
ASRS Report	449988
Events
Anomaly	aircraft equipment problem : critical conflict : ground critical excursion : runway other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Local flight to check the operation of avionics, which had been returned to the factory for operations check and the retractable landing gear, which had recently given problems with the electrical actuating circuits. Flew from las cru to 5t6. Landed on runway 10 at 5t6. Touchdown relatively smooth and start of rollout ok. Then nose began to oscillate. Put pressure on rudder pedals which should stop the oscillation. Aircraft swerved hard left departing the runway and coming to a halt about 200 ft north of the runway. Damage to landing gear, flaps and belly fabric (bellanca 17-30A). This happened once previously, but on a wider runway, and the left turn was recovered before leaving the pavement. The nose oscillation has occurred other times, but usually pressure on the rudder pedals will stop it.

Original NASA ASRS Text

Title: RWY EXCURSION EXPERIENCED BY AN ATP PLT FLYING HIS BELLANCA INTO 5T6, NM.

Narrative: LCL FLT TO CHK THE OP OF AVIONICS, WHICH HAD BEEN RETURNED TO THE FACTORY FOR OPS CHK AND THE RETRACTABLE LNDG GEAR, WHICH HAD RECENTLY GIVEN PROBS WITH THE ELECTRICAL ACTUATING CIRCUITS. FLEW FROM LAS CRU TO 5T6. LANDED ON RWY 10 AT 5T6. TOUCHDOWN RELATIVELY SMOOTH AND START OF ROLLOUT OK. THEN NOSE BEGAN TO OSCILLATE. PUT PRESSURE ON RUDDER PEDALS WHICH SHOULD STOP THE OSCILLATION. ACFT SWERVED HARD L DEPARTING THE RWY AND COMING TO A HALT ABOUT 200 FT N OF THE RWY. DAMAGE TO LNDG GEAR, FLAPS AND BELLY FABRIC (BELLANCA 17-30A). THIS HAPPENED ONCE PREVIOUSLY, BUT ON A WIDER RWY, AND THE L TURN WAS RECOVERED BEFORE LEAVING THE PAVEMENT. THE NOSE OSCILLATION HAS OCCURRED OTHER TIMES, BUT USUALLY PRESSURE ON THE RUDDER PEDALS WILL STOP IT.

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.