1.1 This AIP Supplement is to inform airport users of temporary fixed objects within the airfield and aircraft stand, the use of survey lasers, solar panels, and concrete slabs for the monitoring of ground elevation due to construction works within Singapore Changi Airport, from 26 May 2025, 0200UTC to 31 August 2027, 1600UTC.

2.1 On the closed Aircraft Stand 504, a non-frangible steel frame supports an Automated Total Station (ATS) and will be lighted at night. Poles supporting the prisms outside the runway and taxiway strips, are non-frangible.

2.2 Towers hosting Multi Stations (MS) and poles supporting prisms (LCP and LGD), within the runway and taxiway strips, are frangible. These structures will be located more than 122 metres from Runway 02L/20R centerline and 40 metres from taxiway centrelines. Poles supporting transmitting nodes are also frangible.

2.3 Towers will be lighted at night and poles are outfitted with reflective sleeves. (Refer to Annex A for the locations of the instruments and Annex B for the full list and details of the instruments.

3.1  Class 3R rated survey lasers will be used during the operations of ATS and MS. Pilots should avoid direct eye exposures to the laser sources. Pilots are also advised that laser beams and/or dots may be visible on the pavement surface during low ambient light conditions to avoid unnecessary alarm.

4.1 Solar panels will be used to power the ATS and MS. These panels are mounted on the tower hosting MS03 and are also located near ATS016, MS01, and MS02. Pilots are advised of potential glints and glare from sun reflections.

5.1 Low-mass concrete slabs, serving as multi-station monitoring points, will be installed flushed with the ground within the runway strips, glidepath critical and sensitive areas (GP CSA), and the graded strips of taxiways N2, W, W3, M4, and M. In the non-graded strips of these taxiways, the slabs will protrude 20mm above ground level. Refer to Annex A for the locations of the concrete slabs.

6.1 Any change to the contents of this AIP Supplement will be notified by NOTAM.