Aside from more instrumentation in the thrust section, it was identical to 4A and predictably met the same fate as once again, the thrust section overheated, causing wiring to burn through.
It was identical to 4A. This was aside from more instrumentation in the thrust section. It predictably met the same fate. This was aside from more instrumentation in the thrust section. The thrust section overheated, causing wiring to burn through. This was once again.