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## 6.7 Revising an SRM Document 

Through post-implementation monitoring, a need to modify the previously approved Safety Risk Management (SRM) document may arise (see Section 4.3.2). This requires a revision of the SRM document and new SRM document approval and risk acceptance signatures. 

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The risk acceptor(s), in coordination with the change proponent, may need to update or change an SRM document as a project progresses and decisions are modified. As discussed in Section 3.7.2, monitoring may indicate that the National Airspace System (NAS) change does not meet the predicted residual risk, that the risk management strategy is less effective than expected, or that additional hazards exist. In this case, additional safety requirements may be necessary. Any change to the safety analysis that may affect the assumptions, hazards, causes, or estimated risk in an SRM document necessitates a revision, including new signatures. A change page (containing a description of each change to the SRM document and the number of each affected page) must be included with each SRM document. 

If evaluations conducted by organizations external to the SRM panel indicate high residual risk for existing hazards, a revision to the SRM document is needed. These include Independent Operational Assessments, Flight Inspections, post-implementation safety assessments, Safety and Technical Training audits and assessments, and the NAS Technical Evaluation Program. Based on the results of these assessments, the change proponent may need to modify the SRM document, which could include reopening the safety analysis for additional assessment. 

