Boeing (BA.US) has run into another problem! The FAA has asked for a check on the 787 Dreamliner due to the nose-dive incident.

On Monday, the US Federal Aviation Administration (FAA) said it would require inspections of Boeing's (BA.US) 787 Dreamliners. In March, a 787 Dreamliner operated by LATAM Airlines (LTAM.US) suddenly nosedived in the air, injuring more than 50 passengers.

The FAA said the nose dive was caused by the captain's seat unexpectedly moving, disconnecting the autopilot. The agency said it had received five reports of similar problems with captain and first officer seats on 787 aircraft, the most recent in June and two of which are still under investigation.

The FAA's airworthiness directive affects 158 aircraft registered in the US and all 737 aircraft worldwide, requiring airlines to check captain and first officer seats on 787-7, 787-9 and 787-10 aircraft for problems within 30 days.

The FAA said uncontrolled movement of seats could cause a plane to rapidly descend and cause serious injury to passengers and crew.

Meanwhile, on Monday, Boeing said it had discovered a crack in the structure of its 777X jet during its first test flight. The company said it would ground the test fleet, replace faulty parts and investigate the problem.

Boeing said the part was a structural part between the engine and the cabin, and had notified the federal regulator and customers. The company has 540 new aircraft orders, with deliveries planned to start in 2025, and it is unclear whether the issue will affect the delivery schedule.

Boeing has been in crisis since a plane exploded in the air in the early part of this year. Its shares have fallen more than 30 per cent in a year.