Originally Posted by
Goldfoot
You are assuming that everything happened the same way, just without Peter. The mere fact that Peter died in both histories during this season's timelines changes things. Peter's parents on our side would have had a funeral, altering everyone's lives that were involved from then on. Every different choice they make would alter other people's lives as well. As there are similarities between the Blue and Red sides, the Gold one is similar to the Blue one, but not the same.
The case doesn't unfold quite the same in this timeline, so there's no reason to believe it would have happened on the same schedule as the initial one from the first season. The plane crashed originally, but in the Gold timeline it landed safely.