Cell 203/-101

One hexagon of the map, about 45 km across, centred on 0.294°N 103.53°E.

Source: GPSInterference.com, https://gpsinterference.com/cell/203_-101. Free to reuse with this credit and a link.

Centre
0.294°N 103.53°E · View on the map
Region
South and Southeast Asia
Country
Indonesia

On

Medium interference: 3 to 10% of aircraft

2 of 43 aircraft (4.7%) reported low position accuracy at least once in this cell.

A cell needs three aircraft to be drawn. Yellow and red need at least two affected aircraft and purple at least twelve, so one faulty receiver cannot colour a cell. Low accuracy is evidence of interference, not proof of jamming.

By altitude

AltitudeAffected aircraftShare
Below 5,000 ftno aircraft–
5,000–15,000 ft0 of 40.0%
15,000–30,000 ft0 of 80.0%
Above 30,000 ft2 of 355.7%

Too few aircraft crossed this cell below 5,000 ft or above 15,000 ft to compare the two: five are needed in each.

Each layer is coloured as on the map, except that below 5,000 ft red starts above 20% and yellow at 8%, because receivers near the ground lose accuracy more often for ordinary reasons, such as hills and buildings hiding satellites. How altitude is read

Possible causes

Possible causes include jamming, spoofing, military testing, equipment faults or space weather. The data alone cannot say which, or who is responsible.

How the map works · Background on this region

The last 30 days

16 October 2026: 20.0%17 October 2026: 9.1%18 October 2026: 0.0%19 October 2026: 0.0%20 October 2026: 4.8%21 October 2026: 10.0%22 October 2026: 30.0%23 October 2026: 12.5%24 October 2026: 8.0%25 October 2026: 8.0%26 October 2026: 8.3%27 October 2026: 6.7%28 October 2026: 13.6%29 October 2026: 3.7%30 October 2026: 7.7%31 October 2026: 5.0%1 November 2026: 14.3%2 November 2026: 18.2%3 November 2026: 14.3%4 November 2026: 12.5%5 November 2026: 5.4%6 November 2026: 9.1%7 November 2026: 0.0%8 November 2026: 0.0%9 November 2026: 12.5%10 November 2026: 5.3%11 November 2026: 10.0%12 November 2026: 18.8%13 November 2026: 16.0%14 November 2026: 4.7%
16 October 202614 November 2026

Drawn on 30 of the last 30 saved days; high (red or purple) on 11 of them.

Its median on the days it was drawn in the 30 before was 8.7%: this day is about typical.

The last 90 days

17 August 2026: 13.3%18 August 2026: 0.0%19 August 2026: 0.0%20 August 2026: 6.3%21 August 2026: 0.0%22 August 2026: 14.3%23 August 2026: 0.0%24 August 2026: 0.0%25 August 2026: 0.0%26 August 2026: 4.2%27 August 2026: 7.7%28 August 2026: 0.0%29 August 2026: 6.3%30 August 2026: 0.0%31 August 2026: 6.5%1 September 2026: 7.1%2 September 2026: 0.0%3 September 2026: 0.0%4 September 2026: 8.3%5 September 2026: 0.0%6 September 2026: 0.0%7 September 2026: 0.0%8 September 2026: 0.0%9 September 2026: 0.0%10 September 2026: 15.4%11 September 2026: 12.2%12 September 2026: 0.0%13 September 2026: 0.0%14 September 2026: 0.0%15 September 2026: 11.1%16 September 2026: 7.7%17 September 2026: 0.0%18 September 2026: 7.1%19 September 2026: 7.1%20 September 2026: 4.8%21 September 2026: 0.0%22 September 2026: 4.8%23 September 2026: 5.3%24 September 2026: 5.3%25 September 2026: 19.0%26 September 2026: 6.5%27 September 2026: 12.8%28 September 2026: 13.8%29 September 2026: 0.0%30 September 2026: 8.7%1 October 2026: 5.9%2 October 2026: 14.3%3 October 2026: 16.7%4 October 2026: 7.7%5 October 2026: 10.0%6 October 2026: 0.0%7 October 2026: 0.0%8 October 2026: 7.7%9 October 2026: 6.3%10 October 2026: 7.1%11 October 2026: 0.0%12 October 2026: 0.0%13 October 2026: 4.0%14 October 2026: 0.0%15 October 2026: 7.1%16 October 2026: 20.0%17 October 2026: 9.1%18 October 2026: 0.0%19 October 2026: 0.0%20 October 2026: 4.8%21 October 2026: 10.0%22 October 2026: 30.0%23 October 2026: 12.5%24 October 2026: 8.0%25 October 2026: 8.0%26 October 2026: 8.3%27 October 2026: 6.7%28 October 2026: 13.6%29 October 2026: 3.7%30 October 2026: 7.7%31 October 2026: 5.0%1 November 2026: 14.3%2 November 2026: 18.2%3 November 2026: 14.3%4 November 2026: 12.5%5 November 2026: 5.4%6 November 2026: 9.1%7 November 2026: 0.0%8 November 2026: 0.0%9 November 2026: 12.5%10 November 2026: 5.3%11 November 2026: 10.0%12 November 2026: 18.8%13 November 2026: 16.0%14 November 2026: 4.7%
17 August 202614 November 2026

One mark a day, oldest on the left, in the map's colours. Grey: fewer than three aircraft that day.

Drawn on the map since 6 September 2023. First high (red or purple) on 9 September 2023, most recently on 13 November 2026.

Cite this cell

GPSInterference.com. (2026). GPS interference in map cell 203/-101, 14 November 2026 [Data set]. https://gpsinterference.com/cell/203_-101?date=2026-11-14

Figures by method v2: see how the map works. Source: GPSInterference.com.

Neutrality. We measure and describe data, it is not our job to take sides. The map records where aircraft lost position accuracy, which can come from jamming, spoofing, military testing, equipment faults or space weather. Our data alone can't say who is responsible, so we don't. When we mention a likely source, it's because a government, regulator or reputable outlet has said so publicly. That is their assessment, not ours, and we link to it. Region names and borders follow common international usage and imply no position on any dispute. If you think a page falls short of this, email contact@libregps.com and we'll review it.