Private Jet T7-SEI's Door Detaches Mid-Flight Near Abuja After Cabin Crew Rechecks It, NSIB Preliminary Report Says
Why It MattersThe sequence shows how cabin-door security on pressurised aircraft depends on crew procedure under pressure, and why door-related findings tend to shape wider crew-handling and training discussions across private operations.
What happened
The Nigerian Safety Investigation Bureau (NSIB) said in a preliminary report that the door of a private jet registered T7-SEI detached in mid-air in October. The aircraft was operating flight DWC052 from Abuja to Lagos.
According to the NSIB, the door came off after a cabin crew member rechecked whether it was secure, acting on the pilot's instruction. During the initial climb, the Pilot Monitoring noticed an unusually rapid cabin altitude increase of about 4,000 feet per minute.
The captain told the Pilot Flying to reduce the rate of climb and suspected the door might not be properly secured. At about 17:19:07, the captain instructed the cabin crew to double-check the door.
Industry impact & what to watch
A cabin altitude climbing at about 4,000 feet per minute is the kind of cue that sends a crew looking for a pressurisation or door-seal problem. This case turns on what happened next: the physical recheck of the door, ordered by the captain, is the step the NSIB places immediately before the detachment.
For the private-jet segment, where cabin crew numbers are small and procedures vary by operator, that sequence puts the focus on how door checks are carried out, who performs them, and at what point in the climb. A preliminary report sets out the factual sequence only; the cause of the detachment is still to be established by the investigation.
The next document that would settle the question is the NSIB's final report, which is where findings on the door mechanism and on crew procedures would be set out.
