Apparatus

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sensors Mode-S transponder

8A01DE

ICAO 24-bit transponder address · allocated to Indonesia

Currently assigned to PK-GMD · BOEING 737-800

Hex
8A01DE
Octal
42400736
Decimal
9,044,446
Country
ID
Tail
PK-GMD
Type
B738
No current signal · last broadcast 10h ago
Flights observed
179
Distinct callsigns
20
Country
ID
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 8A01DE.

Country allocation

The ICAO 24-bit address 8A01DE falls within the block assigned to Indonesia (ID) by ICAO Annex 10, Volume III. Every aircraft registered in Indonesia receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
GIA860 Garuda Indonesia 16 2026-05-08
GIA863 Garuda Indonesia 12 2026-05-09
GIA837 Garuda Indonesia 10 2026-05-13
GIA836 Garuda Indonesia 9 2026-05-13
GIA898 Garuda Indonesia 6 2026-05-28
GIA821 Garuda Indonesia 5 2026-05-10
GIA825 Garuda Indonesia 4 2026-05-29
GIA820 Garuda Indonesia 4 2026-05-10
GIA899 Garuda Indonesia 3 2026-05-04
GIA867 - 3 2026-04-13
GIA829 Garuda Indonesia 3 2026-05-11
GIA824 Garuda Indonesia 3 2026-05-28
GIA648 Garuda Indonesia 3 2026-05-25
GIA575 Garuda Indonesia 3 2026-05-12
GIA187 Garuda Indonesia 3 2026-05-20
GIA866 - 2 2026-04-13
GIA838 Garuda Indonesia 2 2026-05-29
GIA823 Garuda Indonesia 2 2026-05-15
GIA610 Garuda Indonesia 2 2026-05-14
GIA509 Garuda Indonesia 2 2026-05-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 GIA839 SIN → CGK May 29, 14:00 UTCMay 29, 14:35 UTC35m
2026-05-29 GIA838 CGK → SIN May 29, 10:50 UTCMay 29, 12:10 UTC1h 20m
2026-05-29 GIA833 SIN → CGK May 29, 07:55 UTCMay 29, 09:20 UTC1h 25m
2026-05-29 GIA832 CGK → SIN May 29, 05:00 UTCMay 29, 06:15 UTC1h 15m
2026-05-29 GIA825 SIN → CGK May 29, 03:25 UTCMay 29, 03:35 UTC10m
2026-05-29 GIA825 SIN → CGK May 29, 02:15 UTCMay 29, 02:45 UTC30m
2026-05-28 GIA824 CGK → SIN May 28, 22:55 UTCMay 29, 00:10 UTC1h 15m
2026-05-28 GIA898 CGK → CAN May 28, 05:50 UTCMay 28, 06:00 UTC10m
2026-05-28 GIA898 CGK → CAN May 28, 01:30 UTCMay 28, 02:55 UTC1h 25m
2026-05-27 GIA137 PGK → CGK May 27, 06:04 UTCMay 27, 06:20 UTC15m
2026-05-26 GIA326 CGK → SUB May 26, 10:34 UTCMay 27, 00:10 UTC13h 35m
2026-05-26 GIA430 CGK → LOP May 26, 04:10 UTCMay 26, 04:50 UTC40m
2026-05-25 GIA648 CGK → TTE May 25, 18:20 UTCMay 25, 18:55 UTC35m
2026-05-25 GIA313 SUB → CGK May 25, 07:05 UTCMay 25, 12:20 UTC5h 15m
2026-05-25 GIA253 DPS → YIA May 25, 05:15 UTCMay 25, 05:25 UTC10m
2026-05-24 GIA252 JOG → DPS May 24, 07:15 UTCMay 24, 07:30 UTC15m
2026-05-24 GIA253 DPS → YIA May 24, 05:15 UTCMay 24, 05:25 UTC10m
2026-05-24 GIA304 CGK → SUB May 24, 00:05 UTCMay 24, 00:45 UTC40m
2026-05-23 GIA2034 YIA → CGK May 23, 11:40 UTCMay 23, 12:20 UTC40m
2026-05-23 GIA2554 DPS → YIA May 23, 09:35 UTCMay 23, 09:45 UTC10m
2026-05-23 GIA2544 YIA → DPS May 23, 05:05 UTCMay 23, 05:20 UTC15m
2026-05-23 GIA2024 CGK → YIA May 23, 03:15 UTCMay 23, 03:40 UTC25m
2026-05-22 GIA326 CGK → SUB May 22, 10:40 UTCMay 22, 11:00 UTC20m
2026-05-22 GIA512 CGK → PNK May 22, 04:55 UTCMay 22, 05:05 UTC10m
2026-05-22 GIA825 SIN → CGK May 22, 02:00 UTCMay 22, 02:30 UTC30m
2026-05-21 GIA824 CGK → SIN May 21, 23:00 UTCMay 22, 00:15 UTC1h 15m
2026-05-21 GIA421 DPS → CGK May 21, 13:35 UTCMay 21, 13:45 UTC10m
2026-05-21 GIA414 CGK → DPS May 21, 09:10 UTCMay 21, 09:30 UTC20m
2026-05-20 GIA4564 CGK → KOE May 20, 23:50 UTCMay 21, 06:30 UTC6h 40m
2026-05-20 GIA193 KNO → CGK May 20, 13:20 UTCMay 20, 15:00 UTC1h 40m
2026-05-20 GIA190 CGK → KNO May 20, 09:55 UTCMay 20, 11:30 UTC1h 35m
2026-05-20 GIA187 KNO → CGK May 20, 06:25 UTCMay 20, 07:25 UTC1h 0m
2026-05-20 GIA184 CGK → KNO May 20, 03:35 UTCMay 20, 04:35 UTC1h 0m
2026-05-20 GIA533 BDJ → CGK May 20, 00:25 UTCMay 20, 00:40 UTC15m
2026-05-19 GIA411 DPS → CGK May 19, 09:25 UTCMay 19, 09:35 UTC10m
2026-05-19 GIA408 CGK → DPS May 19, 04:50 UTCMay 19, 05:30 UTC40m
2026-05-19 GIA153 BTH → CGK May 19, 03:00 UTCMay 19, 03:15 UTC15m
2026-05-19 GIA153 BTH → CGK May 19, 02:10 UTCMay 19, 02:25 UTC15m
2026-05-18 GIA150 CGK → BTH May 18, 23:25 UTCMay 19, 00:25 UTC1h 0m
2026-05-18 GIA325 SUB → CGK May 18, 13:10 UTCMay 18, 13:25 UTC15m
2026-05-18 GIA320 CGK → SUB May 18, 09:20 UTCMay 18, 10:00 UTC40m
2026-05-18 GIA187 KNO → CGK May 18, 02:55 UTCMay 18, 08:05 UTC5h 10m
2026-05-17 GIA183 KNO → CGK May 17, 23:25 UTCMay 18, 01:10 UTC1h 45m
2026-05-17 GIA196 CGK → KNO May 17, 12:30 UTCMay 17, 14:01 UTC1h 30m
2026-05-17 GIA212 CGK → YIA May 17, 08:00 UTCMay 17, 10:50 UTC2h 50m
2026-05-17 GIA136 CGK → PGK May 17, 04:00 UTCMay 17, 04:10 UTC10m
2026-05-16 GIA648 CGK → TTE May 16, 18:30 UTCMay 16, 18:50 UTC20m
2026-05-16 GIA252 JOG → DPS May 16, 06:55 UTCMay 16, 07:05 UTC10m
2026-05-16 GIA2024 CGK → YIA May 16, 03:25 UTCMay 16, 03:40 UTC15m
2026-05-15 GIA823 SIN → CGK May 15, 11:20 UTCMay 15, 11:35 UTC15m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the PK-GMD page for operator, model, and routing details .

Mode-S 8A01DE frequently asked

What is Mode-S code 8A01DE?
8A01DE is an ICAO 24-bit transponder address. Allocated to Indonesia. Assigned to PK-GMD.
Where is Mode-S 8A01DE registered?
Mode-S code 8A01DE is allocated to Indonesia (ID). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8A01DE broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8A01DE, octal 42400736, decimal 9,044,446.
What flights does 8A01DE operate?
Mode-S 8A01DE has broadcast 20 distinct callsigns, including GIA860, GIA863, GIA837, GIA836, GIA898.