Originally Posted by WhoME
This won't work since, in order to get on the flight with a SSSS BP, you need to have the official TSA "you have been inspected, have a nice day" sticker/stamp/inscription. If you pass through security with a another BP, you will be stopped at the aircraft door and either escorted back to the checkpoint or made to wait for a roving screener.
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Michael
On a recent MSP-DTW-FRA-DTW-SFO trip, I was booked on NW but wanted AS credit. Also I wanted to get on an earlier flight on the first segment. For the outbound I had checked in online. Once through security I asked at the WC if I could go stand-by at the gate. She told me, yes, go to the gate. There I received my BP but it had a SSSS on it. No security stamp but they let me on the plane.
On the return I noticed that my BPs had my NW WP # on them. The agent (KLM) could only change my FRA-DTW segment to an AS number. Once in DTW, I again went to the WC and had them change my BP to reflect the AS number. Again, SSSS. (The agent told me that was because of the BP reprint!) At the gate, no problems. I was let on (although I did hear the scanner make a different beep noise than when it scanned the previous BPs.)
So, SSSS, no stamp/sticker; still let onto the plane.