C185 pilot with instructor reports a ground loop after landing on a grass strip. The left wheel hit ...

Attributes
ACN	954640
Time
Date	201106
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skywagon 185
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Direct Visual Approach
Flight Plan	None
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 55 Flight Crew Total 1800 Flight Crew Type 3
Events
Anomaly	Ground Excursion Runway Inflight Event / Encounter Loss Of Aircraft Control

Narrative:

After an uneventful three point landing the airplane was rolling out on runway xx. We were decelerating and at approx 20 mph we hit a ditch and the left wheel got caught or slowed down more than the right wheel. The tail swung to the right immediately. I immediately applied right rudder to stop the left turn of the airplane and asked the instructor to help me. He as well applied right full rudder; but the ground loop couldn't be stopped. The plane did a 180 degree turn and the right main gear broke off. The airplane came to a sudden stop. Contributing factors to the incident were me not providing enough back-pressure on the elevator and the instructor not being on the controls during the roll-out phase of the landing.

Original NASA ASRS Text

Title: C185 pilot with instructor reports a ground loop after landing on a grass strip. The left wheel hit a ditch and the ground loop caused the right gear to fail.

Narrative: After an uneventful three point landing the airplane was rolling out on Runway XX. We were decelerating and at approx 20 mph we hit a ditch and the left wheel got caught or slowed down more than the right wheel. The tail swung to the right immediately. I immediately applied right rudder to stop the left turn of the airplane and asked the instructor to help me. He as well applied right full rudder; but the ground loop couldn't be stopped. The plane did a 180 degree turn and the right main gear broke off. The airplane came to a sudden stop. Contributing factors to the incident were me not providing enough back-pressure on the elevator and the instructor not being on the controls during the roll-out phase of the landing.

Data retrieved from NASA's ASRS site as of April 2012 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.