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                        Section 77.1
                        
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                  Definitions | 
                
                
                
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                        Section 77.3
                        
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                  Applicability | 
                
                
                
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                        Section 77.5
                        
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                  Form and time of notice | 
                
                
                
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                        Section 77.7
                        
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                  Construction or alteration requiring notice | 
                
                
                
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                        Section 77.9
                        
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                  Supplemental notice requirements | 
                
                
                
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                        Section 77.11
                        
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                  Applicability | 
                
                
                
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                        Section 77.13
                        
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                  Scope | 
                
                
                
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                        Section 77.15
                        
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                  Obstruction standards | 
                
                
                
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                        Section 77.17
                        
                   | 
                  Civil airport imaginary surfaces | 
                
                
                
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                        Section 77.19
                        
                   | 
                  Department of Defense (DOD) airport imaginary surfaces | 
                
                
                
                  | 
                        Section 77.21
                        
                   | 
                  Heliport imaginary surfaces | 
                
                
                
                  | 
                        Section 77.23
                        
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                  Applicability | 
                
                
                
                  | 
                        Section 77.25
                        
                   | 
                  Initiation of studies | 
                
                
                
                  | 
                        Section 77.27
                        
                   | 
                  Evaluating aeronautical effect | 
                
                
                
                  | 
                        Section 77.29
                        
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                  Determinations | 
                
                
                
                  | 
                        Section 77.31
                        
                   | 
                  Effective period of determinations | 
                
                
                
                  | 
                        Section 77.33
                        
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                  Extensions, terminations, revisions and corrections | 
                
                
                
                  | 
                        Section 77.35
                        
                   | 
                  General | 
                
                
                
                  | 
                        Section 77.37
                        
                   | 
                  Contents of a petition | 
                
                
                
                  | 
                        Section 77.39
                        
                   | 
                  Discretionary review results | 
                
                
                
                  | 
                        Section 77.41
                        
                   | 
                  Applicability |