<< >> NASA ASRS Report 555818, August 2002

An aeronca champ on landing rollout on a grass runway had the wheels fully lock up causing the aircraft to nose over. Found wheels locked.

Attributes
ACN	555818
Time
Date	200208
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lga.tower
Operator	general aviation : personal
Make Model Name	Aeronca Champion
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 25 flight time total : 946 flight time type : 773
ASRS Report	555818
Events
Anomaly	aircraft equipment problem : critical ground encounters other other anomaly
Independent Detector	other other : person 1
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Airport Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Upon landing rollout at a grass-covered private airfield, the main gear wheels either partially/fully locked up on landing. As a result the aircraft nosed over. Cause is unknown. After the event occurred, the wheels were rotated and they were 'hanging up' and then they eventually rotated freely. 2 of the possible causes are gravel in the brakes (this aircraft is used extensively on unpaved runways) and rust/rough spots on the brakes caused by water (the wheels had recently been washed).

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Original NASA ASRS Text

Title: AN AERONCA CHAMP ON LNDG ROLLOUT ON A GRASS RWY HAD THE WHEELS FULLY LOCK UP CAUSING THE ACFT TO NOSE OVER. FOUND WHEELS LOCKED.

Narrative: UPON LNDG ROLLOUT AT A GRASS-COVERED PVT AIRFIELD, THE MAIN GEAR WHEELS EITHER PARTIALLY/FULLY LOCKED UP ON LNDG. AS A RESULT THE ACFT NOSED OVER. CAUSE IS UNKNOWN. AFTER THE EVENT OCCURRED, THE WHEELS WERE ROTATED AND THEY WERE 'HANGING UP' AND THEN THEY EVENTUALLY ROTATED FREELY. 2 OF THE POSSIBLE CAUSES ARE GRAVEL IN THE BRAKES (THIS ACFT IS USED EXTENSIVELY ON UNPAVED RWYS) AND RUST/ROUGH SPOTS ON THE BRAKES CAUSED BY WATER (THE WHEELS HAD RECENTLY BEEN WASHED).

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.