From the little I have heard; the Globespan 737 trans-atlantic flights have been conducted by Skippers with limited (total) experience and FO's with zero experience. The 737-800 is not ideal to fly long-range (ERA Narsasawak, etc) and the approach taken by GS is substandard.
If this is true, the CAA should look a little deeper into the whole of Globespan's long range operation.
Its questionable to say the least.