WASHINGTON, July 10 (Reuters) - Boeing ( BA ) CEO Dave Calhoun

apologized and vowed the planemaker would follow government

rules after the National Transportation Safety Board said the

company provided non-public information about the 737 MAX

mid-air panel blowout, the safety panel's top official said on

Wednesday.

NTSB Chair Jennifer Homendy told Reuters Calhoun called her

after the NTSB criticized Boeing ( BA ) on June 27 for violating

its investigation rules. "He said they were revisiting with

everybody what the rules are for NTSB investigations," Homendy

said, calling it a "very good conversation."