Quoting ptrjong (Thread starter):
*I understand that only two of the five main runways in AMSm 18R/36L and 09/27, are ready to take a loaded A380 (although the aicraft visiting AMS this Thursday will be empty and thus restrictions don't apply).* |

Looking at the AMS runways

04/22 039FDWT

06/24 082RCXT

18C/36C 082RCXT

18L/36R 082RCXT

18R/36L 095FCWT

09/27 095FCWT

The numbers 39, 82, and 95 are the Pavement Classification Numbers (PCN)

F/R means flexible/rigid

C/D is the pavement sub category

W/X is the maximum tyre pressure means W - high, no limit, X - medium max 217 PSI

T means this has been determined by technical evaluation.

The runways basically have 2 classifications (I am ignoring 04/22 with such low strength is is really only good for turboprops)

082RCXT PCN of 82, rigid with a sub grade category "C" (Low) with max tyre pressure of 217 PSI

095FCWT PCN of 95, flexible with a sub grade category "C" (Low) with no max tyre pressure

The A380 tyre pressure is 200 PSI, so that is not a limit on any runway.

For rigid pavement with a sub grade category of "C", the ACN (aircraft classification number) at MTOW (262t) is 76

For flexible pavement with a sub grade category of "C", the ACN (aircraft classification number) at MTOW (262t) is 85

As the ACN is lower than the respective PCN for the various pavement types (76 82 & 105 > 95), the 77W is restricted on all runways.

Quoting ptrjong (Thread starter):
*Wasn't the A380 supposed to have much the same runway requirements and footprint per wheel as a 747?* |

It does, in fact it uses less runway than the 744 for takeoff and landing, and has lower ACNs than the 77W, 77F, 748 346 etc.

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