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 notice on June 7, 1997, to implement the requirement for supervisors to check the MSAW speakers as part of the shift checklist and record the completion of this inspection on the appropriate facility logs. The FAA also revised Order 7210.3, "Facility Operation and Administration," to reflect the change in policy and procedures.

On February 27, 1998, the Safety Board stated that, because the actions taken by the FAA addressed the intent of Safety Recommendations A-97-22 and -23, they were classified "Closed--Acceptable Action."

Safety Recommendation A-97-24 asked the FAA to

Require that all affected terminal personnel be briefed on the contents of this safety recommendation letter. This briefing should focus on generating awareness and vigilance in those situations in which a safety alert might occur and controllers must be prepared to respond, as directed in FAA Order 7110.65, "Air Traffic Control."

On July 1, 1997, the FAA stated that it complied with this safety recommendation in a June 9, 1997, memorandum to facility managers, requiring that controllers be briefed on how to respond to MSAW alerts. The facility managers were directed to ensure, within 2 weeks after the receipt of the memorandum, that all operational personnel were briefed on the requirements of FAA Order 7110.65, "Air Traffic Control," paragraph 2-1-1, "Duty Priority;" 2-1-6, "Safety Alerts;" and 5-15-57, "Inhibiting Minimum Safe Altitude Warnings (MSAW)." All operational personnel were also expected to be briefed on the actions to be taken when controllers are alerted by the MSAW of an aircraft's proximity to terrain.

On February 27, 1998, the Safety Board stated that it had received a copy of the FAA's June 9, 1997, memorandum but that, in light of the Korean Air flight 801 accident on August 6, 1997, the Board had not received written confirmation that the actions directed by the memorandum were completed for the Guam ATC facilities. On September 25, 1998, the FAA stated that it had accomplished the briefing to Guam ATC facility personnel on July 18, 1997. As a result, the Safety Board classified Safety Recommendation A-97-24 "Closed--Acceptable Action" on January 14, 1999.

Safety Recommendation A-97-25 asked the FAA to

Modify the software for the minimum safe altitude warning system to enhance conspicuity of those aircraft that may require the controller's immediate attention and action. Such modifications might be accomplished by placing the target and data block within a flashing circle.

The FAA stated in its July 1, 1997, letter that it reviewed the feasibility of modifying the software for the MSAW system to enhance the conspicuity of the data block. The FAA concluded that the existing MSAW processing generated sufficient alarms and was completely adequate; thus, no further action would be necessary.