EGSS

[F9DXER]

[td]

Just trying to figure this notam out, there is no construction on that end so how would undulation affect line of sight for comm
only during the notam period?

Also - aligning with ATC beam? Does ATC tell you which direction to point?

A5827/24 NOTAMR A5762/24
Q)EGTT/QSTLT/IV/NBO/A/000/999/5153N00014E005
A)EGSS B)2408120938 C)2410072259
E)DUE TO RUNWAY UNDULATION AND LINE
OF SIGHT ISSUES ON RUNWAY 04.
AIRCRAFT MAY LOSE TWO WAY COMMUNICATION
WITH ATC, SHOULD THIS OCCUR
WHEN ON THE RUNWAY PILOTS SHOULD CONSIDER
ALIGNING WITH ATC ABEAM
K1 ON THE RUNWAY TO RE-ESTABLISH COMMUNICATIONS.​

[/td]​

 

[JimnyCricket79]

K1 that’s a Euro spec for microwave landing system. How big are these undulations that it loses connection.

 

[F9DXER]

Undualtion are the waves that appear in the runway. Yet there is only 24ft difference in height between each end of the runway.
Again just not sure about the wording of this notam
K1 is a taxiway

 

[PHL_Approach]

They should just pull a page out of EWR's book and throw this on the ATIS "RY 4 DEPARTURES, USE UPPER ANTENNA FOR ATC COMMUNICATIONS."

 

[A1TAPE]

They should just pull a page out of EWR's book and throw this on the ATIS "RY 4 DEPARTURES, USE UPPER ANTENNA FOR ATC COMMUNICATIONS."

Why is that anyway? the tower is in direct line of sight with both 22/4s.