| OID | OID (database unique ID) - numeric datatype  A single column containing a database-unique identifier. It is this identifier which is actually used  to link all the records in all the tables to the same Occurrence. | 
                                            
                                                | ID | ID (Instance ID)  This is the instance ID in this table. | 
                                            
                                                | A1 | Aerodrome latitude, specified in degrees | 
                                            
                                                | A2 | Aerodrome longitude, specified in degrees | 
                                            
                                                | A3 | Area configuration | 
                                            
                                                | A4 | Elevation above MSL, specified in feet | 
                                            
                                                | A5 | Location indicator | 
                                            
                                                | A7 | Aerodrome status | 
                                            
                                                | A8 | Surface type | 
                                            
                                                | A9 | Landing area type | 
                                            
                                                | A10 | Aerodrome type | 
                                            
                                                | A24 | Category provided | 
                                            
                                                | A119 | Category published | 
                                            
                                                | A497 | Braking determined by | 
                                            
                                                | A498 | Braking action | 
                                            
                                                | A504 | Type of deposits | 
                                            
                                                | A641 | Location on aerodrome | 
                                            
                                                | A796 | Extent contamination | 
                                            
                                                | A797 | Depth of deposit, specified in millimetres | 
                                            
                                                | A810 | Loc of contamination | 
                                            
                                                | A5_T | Extension of aerodrome location indicator, text | 
                                            
                                                | A641_T | Extension of location of the occurrence on or near the aerodrome | 
                                            
                                                | A810_T | Extension of Location of contamination | 
                                            
                                                | A3_1 | Extension of Helicopter landing area configuration | 
                                            
                                                | A5_1 | Extension of aerodrome location indicator part 1 | 
                                            
                                                | A5_2 | Extension of aerodrome location indicator part 2 | 
                                            
                                                | A7_1 | Extension of Aerodrome status | 
                                            
                                                | A8_1 | Extension of Helicopter landing area surface type | 
                                            
                                                | A9_1 | Extension of Helicopter landing area type | 
                                            
                                                | A10_1 | Extension of Aerodrome type | 
                                            
                                                | A24_1 | Extension of Category of aerodrome RFS provided | 
                                            
                                                | A119_1 | Extension of Aerodrome Rescue Fire Service category published | 
                                            
                                                | A497_1 | Extension of Braking action determined by method | 
                                            
                                                | A498_1 | Extension of The braking action of the surface | 
                                            
                                                | A504_1 | Extension of Surface deposits part 1 | 
                                            
                                                | A504_2 | Extension of Surface deposits part 2 | 
                                            
                                                | A641_1 | Extension of Location of the occurrence on or near the aerodrome part 1 | 
                                            
                                                | A641_2 | Extension of Location of the occurrence on or near the aerodrome part 2 | 
                                            
                                                | A796_1 | Extension of Extent of contamination | 
                                            
                                                | A810_1 | Extension of Location of contamination part 1 | 
                                            
                                                | A810_2 | Extension of Location of contamination part 2 | 
                                            
                                                | A3_1_Translate | Translation of the code-value in A3_1 column. | 
                                            
                                                | A3_Translate | Translation of the code-value in A3 column. | 
                                            
                                                | A5_1_Translate | Translation of the code-value in A5_1 column. | 
                                            
                                                | A5_2_Translate | Translation of the code-value in A5_2 column. | 
                                            
                                                | A5_Translate | Translation of the code-value in A5 column. | 
                                            
                                                | A7_1_Translate | Translation of the code-value in A7_1 column. | 
                                            
                                                | A7_Translate | Translation of the code-value in A7 column. | 
                                            
                                                | A8_1_Translate | Translation of the code-value in A8_1 column. | 
                                            
                                                | A8_Translate | Translation of the code-value in A8 column. | 
                                            
                                                | A9_1_Translate | Translation of the code-value in A9_1 column. | 
                                            
                                                | A9_Translate | Translation of the code-value in A9 column. | 
                                            
                                                | A10_1_Translate | Translation of the code-value in A10_1 column. | 
                                            
                                                | A10_Translate | Translation of the code-value in A10 column. | 
                                            
                                                | A24_1_Translate | Translation of the code-value in A24_1 column. | 
                                            
                                                | A24_Translate | Translation of the code-value in A24 column. | 
                                            
                                                | A119_1_Translate | Translation of the code-value in A119_1 column. | 
                                            
                                                | A119_Translate | Translation of the code-value in A119 column. | 
                                            
                                                | A497_1_Translate | Translation of the code-value in A497_1 column. | 
                                            
                                                | A497_Translate | Translation of the code-value in A497 column. | 
                                            
                                                | A498_1_Translate | Translation of the code-value in A498_1 column. | 
                                            
                                                | A498_Translate | Translation of the code-value in A498 column. | 
                                            
                                                | A504_1_Translate | Translation of the code-value in A504_1 column. | 
                                            
                                                | A504_Translate | Translation of the code-value in A504 column. | 
                                            
                                                | A504_2_Translate | Translation of the code-value in A504_2 column. | 
                                            
                                                | A641_1_Translate | Translation of the code-value in A641_1 column. | 
                                            
                                                | A641_Translate | Translation of the code-value in A641 column. | 
                                            
                                                | A641_2_Translate | Translation of the code-value in A641_2 column. | 
                                            
                                                | A796_1_Translate | Translation of the code-value in A796_1 column. | 
                                            
                                                | A796_Translate | Translation of the code-value in A796 column. | 
                                            
                                                | A810_1_Translate | Translation of the code-value in A810_1 column. | 
                                            
                                                | A810_Translate | Translation of the code-value in A810 column. | 
                                            
                                                | A810_2_Translate | Translation of the code-value in A810_2 column. |