| Name | Data Type | Definition | |
|---|---|---|---|
| nilReason | NilReasonEnumeration | ||
| HI | string | Approach procedures with segments such as a high altitude teardrop penetration that are within the high airspace stratum, requested by Military. Normally C, D and E Minimums only. | Inherited from CodeApproachPrefixBaseType |
| COPTER | string | Indicates helicopter approach | Inherited from CodeApproachPrefixBaseType |
| CONVERGING | string | Parallel or joining operation with parallel or joining ILS courses | Inherited from CodeApproachPrefixBaseType |
| OTHER | string | Other | Inherited from CodeApproachPrefixBaseType |