Two pilots in a christen eagle ii reported a loss of control and ground looped during landing.

Attributes
ACN	1334451
Time
Date	201602
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Christen Eagle II
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	None
Person 1
Function	Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 20 Flight Crew Type 8
Person 2
Function	Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 1150 Flight Crew Type 12
Events
Anomaly	Ground Event / Encounter Loss Of Aircraft Control

Narrative:

I was flying the aircraft from the rear-seat (pilot seat; two seats in the aircraft with one is front of the other) performing multiple touch & go's. On the last landing; the plane had bounced which started to cause the cg to shift making the aircraft want to swerve from left to right. In attempt to prevent the aircraft from swerving any further; I attempted to put in the correct rudder inputs while the aircraft began to swerve. The passenger (an experienced pilot) then took controls and also attempted to prevent the swerving. The aircraft resulted in ground looping on the runway which caused damage to the right landing gear.

Original NASA ASRS Text

Title: Two pilots in a Christen Eagle II reported a loss of control and ground looped during landing.

Narrative: I was flying the aircraft from the rear-seat (pilot seat; two seats in the aircraft with one is front of the other) performing multiple touch & go's. On the last landing; the plane had bounced which started to cause the CG to shift making the aircraft want to swerve from left to right. In attempt to prevent the aircraft from swerving any further; I attempted to put in the correct rudder inputs while the aircraft began to swerve. The passenger (an experienced pilot) then took controls and also attempted to prevent the swerving. The aircraft resulted in ground looping on the runway which caused damage to the right landing gear.

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.