Uncanny X-Men #154 FN- Origin of the Summers family

Uncanny X-Men #154

FN- (5.5)

Origin of the Summers family: Cyclops, Havok, Corsair

Story by Chris Claremont

Art by Dave Cockrum, Bob Wiacek, and Joe Rubinstein

Cover by Dave Cockrum

Corsair's ship crash lands on Xavier's estate. Corsair's trying to warn the X-Men that the Shi'ar, is following the trail of the kidnappers to earth,  that has kidnapped their empress and they'll do anything to retrieve her.

Also, it is revealed that Corsair is Cyclops' father.