Complex sentence: The aircraft made an emergency descent, and after landing, was found to have a hole approximately long on top of the fuselage above the passenger cabin An investigation revealed evidence of pre-existing fatigue, and led to the FAA increasing the inspection rate of certain airframes.
Split into simpler sentences: The aircraft made an emergency descent, and after landing, was found to have a hole approximately long on top of the fuselage above the passenger cabin. This incident led to the FAA increasing the inspection rate of certain airframes.