Here's the full surveillance video showing moments before the Lufthansa Boeing 787-9 (D-ABPQ) nose gear collapsed at Frankfurt.
If you watch closely, the nose landing gear doors open first, indicating what appears to be the start of a normal landing gear retraction sequence.
According to reports, the Dreamliner had logged a maintenance request the previous day involving a landing gear door error message.
On the Boeing 787, maintenance personnel can place the aircraft into a special maintenance mode (on the overhead panel, turn switch to "enable").
Boeing manuals emphasize that if maintenance mode is enabled, hydraulics are powered, and the gear lever is selected UP, the landing gear can retract regardless of weight-on-wheels protection. To prevent this, there's an override button where the gear handle lockout can be bypassed to move the gear handle even if it is locked out.
The only way this can happen is by intentionally bypassing the normal safety lockouts used during maintenance procedures. Outside of maintenance or certain emergency procedures, the aircraft's weight-on-wheels system prevents gear retraction on the ground.
Lufthansa says the aircraft has since been recovered. Fuel was removed, the jet was lifted, the nose gear was re-extended, and the aircraft was successfully towed under its own weight to a maintenance hangar.
Germany's Federal Bureau of Aircraft Accident Investigation has completed evidence collection from the aircraft and is now gathering witness statements. An interim report is expected within approximately 8 weeks.
πΉ: airlinersde via YouTube, link on first comment here.