This paper presents an experimental study of numerical analysis results for an immersion-cooled, pancake-type superconducting test coil. A thermal disturbance was applied to the test coil by the pulse-heating of film heaters wound in it. The experimental results were compared with calculated results regarding stability limit and quench propagation under various transport currents, durations and positions of thermal disturbance. The experimental values agreed well with the calculated results, thus confirming the reliability of the numerical analysis method.