Primary finding
Probable cause
An in-flight collision with a bird.
Investigator assessment
Analysis narrative
The pilot reported that shortly after departure, during their initial climb, he heard a “thump” and suspected a bird strike. The crew did not experience any control issues or anomalous behavior initially but continued to troubleshoot. As they were approaching 10,000 ft mean sea level, they noticed that the cabin altitude was also approaching 10,000 ft, so they leveled off and determined that they had a pressurization problem. After conferring with their flight operations and maintenance department, they notified air traffic control and diverted to a suitable airport and landed safely. Upon subsequent inspection it was revealed that a bird had penetrated the right side of the nose under the first officer’s window. The impact ruptured the fuselage and resulted in substantial airframe damage.