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NTSB Safety Recommendations
CEX Closed--Exceeds Recommended Action: Response by recipient indicates action on the safety recommendation has been completed. The action taken surpasses what the Safety Board envisioned.
CAA Closed--Acceptable Action: Response by recipient indicates action on the safety recommendation has been completed. The action complies with the safety recommendation.
CAAA Closed--Acceptable Alternate Action: Response by recipient indicates an alternate course of action has been completed that meets the objective of the safety recommendation.
CUA Closed--Unacceptable Action: Response by recipient expresses disagreement with the need outlined in the recommendation. There is no further evidence to offer, and the Safety Board concludes that further correspondence on, or discussion of, the matter would not change the recipient's position. This status can also be used when the timeframe goals outlined in this order have not been met.
CUAN Closed--Unacceptable Action/No Response Received: No response to the recommendation was ever received.
CR Closed--Reconsidered: Recipient rejects the safety recommendation and supports this rejection with a rationale with which the Board concurs. Reasons for the "Reconsidered" status would include situations where the recipient is able to convince the Board that the proposed action would not be effective or that it might create other problems. This status is also assigned when the recipient of a recommendation was in compliance before the recommendation was issued or when the recipient was incorrectly chosen and cannot perform the recommended action.
CNLA Closed--No Longer Applicable: The recommended action has been overtaken by events. For example, if technology and/or regulatory action has eliminated the reason for the recommendation or if a company has gone out of business.
CS Closed--Superseded: Applied to recommendations held in an open status when a new, more appropriate safety recommendation is issued that includes the necessary elements of the recommendation to be closed.
CAAS, CAAAS, CUAS Closed--Acceptable/Acceptable Alternate/Unacceptable Action Superseded: Applied to recommendations held in an open status when a new, more appropriate safety recommendation is issued that includes the necessary elements of the recommendation to be closed. The Board determines the Acceptable/Acceptable Alternate/Unacceptable status based on the criteria defined above prior to superseding the recommendation.
OAA Open--Acceptable Response: Response by recipient indicates a planned action that would comply with the safety recommendation when completed.
OAAR Open--Acceptable Alternate Response: Response by recipient indicates an alternate plan or implementation program that would satisfy the objective of the safety recommendation when implemented.
OUA Open--Unacceptable Response: Response by recipient expresses disagreement with the need outlined in the recommendation or attempts to convince the Board (unsuccessfully) that an alternative course of action is acceptable. The Board believes, however, that there is enough supporting evidence to ask the recipient to reconsider its position. This status can also be used when the Board believes that action is not being taken in a timely manner.
ORR Open--Response Received: Response has been received from recipient, but staff evaluation of the response has not been approved by the Board Members.
OAR Open--Await Response: When a safety recommendation is issued, the status "Open-Await Response" is automatically assigned.

 

Safety Recommendations Database

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NTSB Recommendations: Hazmat
PHMSA is required by law to respond to recommendations issued by the National Transportation Safety Board (NTSB).
 
NTSB Recommendations: Pipeline
PHMSA is required by law to respond to recommendations issued by the National Transportation Safety Board (NTSB).
 
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