| FALS |                             string
 |                                         Full approach light facilities; comprise runway markings, 720 m or more of high/medium intensity approach lights, runway edge lights, threshold lights and runway end lights.  |         
                              | 
                            
        
                            | IALS |                             string
 |                                         Intermediate approach light facilities; comprise runway markings, 420 to 720 m of high/medium intensity approach lights, runway edge lights, threshold lights and runway end lights.  |         
                              | 
                            
        
                            | BALS |                             string
 |                                         Basic approach light facilities; comprise runway markings, less than 420 m of high/medium intensity approach lights (or any length of low intensity approach lights), runway edge lights, threshold lights and runway end lights.  |         
                              | 
                            
        
                            | NALS |                             string
 |                                         None or insufficient approach light facilities; comprise runway markings, runway edge lights, threshold lights, runway end lights or no lights at all. |         
                              | 
                            
        
                            | OTHER |                             string
 |                                         Other |         
                              |