Aug 7 (Reuters) - The National Transportation Safety

Board plans to conduct a safety culture survey of employees at

Boeing's ( BA ) 737 MAX factory in Renton, Washington, the

board's chair said on Wednesday.

NTSB Chair Jennifer Homendy disclosed the plan at a hearing

after criticizing the planemaker's prior safety efforts before a

January 737 MAX mid-air emergency and Boeing's ( BA ) failure to

prevent unauthorized or undocumented work at the 737 factory.

Boeing ( BA ) executive Paul Wright said at the hearing that the

planemaker would commit to work with the NTSB to carry out the

board's survey without interference.