An entity grouping together the attributes that model characteristics of an airport surface (e.g. Runway or TLOF), such as strenghtstrength, material, etc.
The composition attribute is used to code the type of the predominant material of which a surface of the movement area is composed.
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The quality of the surface of an airport surface will be coded with the surfaceCondition attribute.
Pavement Classification Number (PCN)
| Note | ||
|---|---|---|
| ||
| The PANS-AIM requires the PCN to be provided for runways. |
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If the bearing strength of a rigid pavement, resting on a medium strength subgrade, has been assessed by technical evaluation to be PCN 80 and there is no tire pressure limitation, then the reported information would be as follows:
Load Classification Number (LCN)
The classLCN is used to code the value which denotes the peak bearing moment the surface can handle repeatedly without shortening its service life.
Single Isolated Wheel Load (SIWL)
Two attributes are used to describe the Single Isolated Wheel Load (SIWL).
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The tyrePressureSIWL attribute represents the maximum aircraft tire pressure that a movement area surface can support.
All Up Weight (AUW)
The weightAUW attribute represents the maximum total value of the weight of an aircraft that a movement area surface may support, regardless of the landing gear configuration of the aircraft.
Coding Rules for Surface Characteristic
| Identifier | Data Encoding Rule | Justification | Data Verification Rule (UID) | Remarks |
|---|---|---|---|---|
| SCH-101 | If VAL_PCN_CLASS is specified, then CODE_PCN_MAX_TIRE_PRESSURE or VAL_PCN_MAX_TIRE_PRESSURE must be specified. | EAD | TBD | |
| SCH-102 | If VAL_PCN_CLASS is specified, then CODE_PCN_PAVEMENT_TYPE, CODE_PCN_PAVEMENT_SUBGRADE and CODE_PCN_EVAL_METHOD must be specified. | EAD | TBD | |
| SCH-103 | As a plausibility rule, the value of VAL_PCN_CLASS should be lower then 200. | EAD | TBD | |
| SCH-104 | As a plausibility rule, the value of VAL_PCN_MAX_TIRE_PRESSURE should be lower then 2.00 | EAD | TBD | |
| SCH-105 | As a plausibility rule, the value of VAL_LCN_CLASS should be lower then 200. | EAD | TBD | |
| SCH-106 | If VAL_SIWL_WEIGHT is specified, then VAL_SIWL_TIRE_PRESSURE must be specified. | EAD | TBD |