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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 Jul 26, 07:40 UTC
Flights observed
434
Distinct callsigns
20
Country
ID
Last broadcast
Jul 26, 07:40 UTC

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 26 2026-07-24
GIA863 Garuda Indonesia 22 2026-07-25
GIA825 Garuda Indonesia 16 2026-07-18
GIA837 Garuda Indonesia 14 2026-07-24
GIA836 Garuda Indonesia 11 2026-07-24
GIA823 Garuda Indonesia 11 2026-07-23
GIA839 - 10 2026-07-06
GIA824 - 10 2026-07-17
GIA833 - 9 2026-07-18
GIA898 Garuda Indonesia 8 2026-06-07
GIA838 - 7 2026-07-06
GIA832 Garuda Indonesia 7 2026-07-18
GIA829 Garuda Indonesia 7 2026-06-11
GIA821 Garuda Indonesia 7 2026-07-24
GIA822 Garuda Indonesia 6 2026-07-22
GIA326 - 6 2026-07-07
GIA322 - 6 2026-07-13
GIA187 - 6 2026-07-15
GIA867 Garuda Indonesia 5 2026-06-05
GIA820 Garuda Indonesia 5 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GIA310 CGK → SUB Jul 26, 06:55 UTCJul 26, 07:40 UTC45m
2026-07-26 GIA431 LOP → CGK Jul 26, 04:45 UTCJul 26, 05:05 UTC20m
2026-07-26 GIA432 CGK → LOP Jul 26, 00:40 UTCJul 26, 01:25 UTC45m
2026-07-25 GIA193 KNO → CGK Jul 25, 13:20 UTCJul 25, 15:20 UTC2h 0m
2026-07-25 GIA190 CGK → KNO Jul 25, 09:55 UTCJul 25, 11:35 UTC1h 40m
2026-07-25 GIA863 HKG → CGK Jul 25, 06:25 UTCJul 25, 06:40 UTC15m
2026-07-25 GIA863 HKG → CGK Jul 25, 02:05 UTCJul 25, 02:20 UTC15m
2026-07-24 GIA860 CGK → HKG Jul 24, 21:15 UTCJul 24, 21:30 UTC15m
2026-07-24 GIA860 CGK → HKG Jul 24, 16:55 UTCJul 24, 18:25 UTC1h 30m
2026-07-24 GIA837 SIN → CGK Jul 24, 13:10 UTCJul 24, 13:30 UTC20m
2026-07-24 GIA837 SIN → CGK Jul 24, 12:05 UTCJul 24, 12:35 UTC30m
2026-07-24 GIA836 CGK → SIN Jul 24, 08:50 UTCJul 24, 10:10 UTC1h 20m
2026-07-24 GIA821 KUL → CGK Jul 24, 06:40 UTCJul 24, 07:00 UTC20m
2026-07-24 GIA821 KUL → CGK Jul 24, 05:10 UTCJul 24, 06:05 UTC55m
2026-07-24 GIA820 CGK → KUL Jul 24, 01:40 UTCJul 24, 03:30 UTC1h 50m
2026-07-23 GIA823 SIN → CGK Jul 23, 11:10 UTCJul 23, 11:30 UTC20m
2026-07-23 GIA823 SIN → CGK Jul 23, 10:10 UTCJul 23, 10:35 UTC25m
2026-07-22 GIA822 CGK → SIN Jul 22, 12:45 UTCJul 22, 13:45 UTC1h 0m
2026-07-22 GIA866 CGK → BKK Jul 22, 02:55 UTCJul 22, 05:25 UTC2h 30m
2026-07-21 GIA183 KNO → CGK Jul 21, 23:25 UTCJul 22, 01:10 UTC1h 45m
2026-07-21 GIA196 - Jul 21, 12:45 UTCJul 21, 14:25 UTC1h 40m
2026-07-21 GIA147 BTJ → CGK Jul 21, 05:20 UTCJul 21, 11:25 UTC6h 5m
2026-07-21 GIA683 SOQ → CGK Jul 21, 02:35 UTCJul 21, 02:50 UTC15m
2026-07-20 GIA682 - Jul 20, 17:25 UTCJul 20, 17:50 UTC25m
2026-07-20 GIA509 - Jul 20, 11:20 UTCJul 20, 11:40 UTC20m
2026-07-20 GIA109 - Jul 20, 06:10 UTCJul 20, 06:30 UTC20m
2026-07-20 GIA104 - Jul 20, 03:45 UTCJul 20, 04:05 UTC20m
2026-07-20 GIA649 - Jul 20, 02:10 UTCJul 20, 02:25 UTC15m
2026-07-19 GIA648 - Jul 19, 18:35 UTCJul 19, 18:55 UTC20m
2026-07-19 GIA213 - Jul 19, 10:10 UTCJul 19, 11:00 UTC50m
2026-07-19 GIA212 CGK → YIA Jul 19, 08:10 UTCJul 19, 08:35 UTC25m
2026-07-19 GIA155 - Jul 19, 06:20 UTCJul 19, 06:40 UTC20m
2026-07-19 GIA155 - Jul 19, 05:30 UTCJul 19, 05:45 UTC15m
2026-07-19 GIA152 CGK → BTH Jul 19, 02:55 UTCJul 19, 03:55 UTC1h 0m
2026-07-18 GIA426 CGK → DPS Jul 18, 11:45 UTCJul 19, 01:15 UTC13h 30m
2026-07-18 GIA833 - Jul 18, 08:20 UTCJul 18, 09:40 UTC1h 20m
2026-07-18 GIA832 CGK → SIN Jul 18, 04:55 UTCJul 18, 06:15 UTC1h 20m
2026-07-18 GIA825 SIN → CGK Jul 18, 03:00 UTCJul 18, 03:15 UTC15m
2026-07-18 GIA825 SIN → CGK Jul 18, 01:50 UTCJul 18, 02:19 UTC30m
2026-07-17 GIA824 - Jul 17, 23:10 UTCJul 18, 00:25 UTC1h 15m
2026-07-17 GIA823 - Jul 17, 11:35 UTCJul 17, 11:55 UTC20m
2026-07-17 GIA823 - Jul 17, 10:30 UTCJul 17, 11:00 UTC30m
2026-07-17 GIA843 - Jul 17, 01:59 UTCJul 17, 02:10 UTC10m
2026-07-16 GIA822 - Jul 16, 12:49 UTCJul 16, 14:10 UTC1h 20m
2026-07-16 GIA537 - Jul 16, 11:05 UTCJul 16, 11:15 UTC10m
2026-07-16 GIA431 - Jul 16, 05:05 UTCJul 16, 05:15 UTC10m
2026-07-16 GIA432 - Jul 16, 00:45 UTCJul 16, 00:55 UTC10m
2026-07-15 GIA193 - Jul 15, 10:55 UTCJul 15, 15:10 UTC4h 15m
2026-07-15 GIA190 - Jul 15, 09:55 UTCJul 15, 10:10 UTC15m
2026-07-15 GIA187 - Jul 15, 08:00 UTCJul 15, 08:20 UTC20m

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 Jul 26, 07:40 UTC.
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, GIA825, GIA837, GIA836.