Experimental tailwheel aircraft pilots reported a loss of control during landing resulted in a slow ...

Attributes
ACN	1610599
Time
Date	201901
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Amateur/Home Built/Experimental
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	None
Person 1
Function	Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Experience	Flight Crew Last 90 Days 85 Flight Crew Total 6735 Flight Crew Type 30
Person 2
Function	Pilot Flying
Qualification	Flight Crew Private Flight Crew Instrument
Experience	Flight Crew Last 90 Days 12 Flight Crew Total 525 Flight Crew Type 0.2
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control Ground Excursion Runway

Narrative:

I am not an instructor; but allowed a friend (with a tailwheel endorsement and current in tailwheel airplanes) to fly the airplane. I sat in the back seat while he sat in the front seat. We had some difficulties with the communication radio which distracted me from providing enough of a briefing on the unique ground handling characteristics of the sport cub prior to our landing on xxl at ZZZ. His landing was firm; but acceptable. During rollout; at a very slow speed (approximately 20-25 mph); he lost directional control and we did a lazy ground loop to the right. We exited the runway to the right onto the grass. There was no damage to the airplane. An airport truck met us and inspected the runway and grass. He later commented that there was no damage to the airport and that he could not even see our tracks in the grass. I had more faith in my friend's ability than I should have.

Original NASA ASRS Text

Title: Experimental tailwheel aircraft pilots reported a loss of control during landing resulted in a slow speed ground loop and runway excursion.

Narrative: I am not an instructor; but allowed a friend (with a tailwheel endorsement and current in tailwheel airplanes) to fly the airplane. I sat in the back seat while he sat in the front seat. We had some difficulties with the COM radio which distracted me from providing enough of a briefing on the unique ground handling characteristics of the Sport Cub prior to our landing on XXL at ZZZ. His landing was firm; but acceptable. During rollout; at a very slow speed (approximately 20-25 MPH); he lost directional control and we did a lazy ground loop to the right. We exited the runway to the right onto the grass. There was no damage to the airplane. An airport truck met us and inspected the runway and grass. He later commented that there was no damage to the airport and that he could not even see our tracks in the grass. I had more faith in my friend's ability than I should have.

Data retrieved from NASA's ASRS site 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.