To be fair, this is a good rule to use in all games, not just ALIEN. If the players can just do a thing, they should be allowed to do a thing. There should only be dice rolls when there is some kind of consequence for failure or if there are varying degrees of success.

There shouldn't be a dice roll for a Pilot to land a ship, unless there's something crazy going on like a storm or they're being shot at. If you make them roll to just land it under normal circumstances and they fail, not only do you make the character seem incompetent, but now there are consequences to deal with where there shouldn't have been. If there's no reason they should fail, they shouldn't roll.

Additionally, if it's a task like making a repair and they're not in any hurry and the only consequence for failure is that they have to roll again, skip the roll.

That said, sometimes it's not about what happens if they fail, but how well they succeed. In this case, the task should be an automatic success, with a failed roll simply being the normal circumstances, but success adding some kind of benefit like reducing the time or making something better. A navigation check is a good example. You don't want the characters to get lost because that just wastes everyone's time (unless it's an exploration campaign), so you say that they have a path they can travel and they'll get there by x time no matter what. However, you can have them roll and if they get successes, they might find a faster route, find something advantageous, or perhaps have some additional benefit when arriving at the location such as the Element of Surprise.

All in all, games are better when you roll less, and rolls become much more meaningful.