The FAA is revising a notice of proposed rulemaking NPRM that would apply to all The Boeing Company Model 777-200 -200LR -300 -300ER and 777F series airplanes. This action revises the NPRM by changing certain proposed actions from ultrasonic inspections UT to open hole high frequency eddy current HFEC inspections. The FAA is proposing this airworthiness directive AD to address the unsafe condition on these products. Since these actions would impose an additional burden over that in the NPRM the FAA is requesting comments on this SNPRM.