Originally Posted by
Ftrooppilot
Here is an interesting opposite situation. The two seat RB-57F had no flight controls in the back seat. It was all recon equipment. My first flight in the aircraft was with an instructor who "came along for the ride." He logged USAF IP time without a set of controls.
The designated PIC and/or IP can often log the time from the jumpseat or even the rack. If the IP was considered over-all responsible for the flight just by virtue of being present it might be legit.
S-3 SIC is not as high-quality time as some other types of SIC, but it is better quality than other types of time that routinely gets logged per the regs in civil aviation.