sensors Mode-S transponder

ABC5B8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N858GT · BOEING 747-8 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABC5B8
Octal
52742670
Decimal
11,257,272
Country
US
Tail
N858GT
Type
B748
No current signal · last broadcast 2h ago
Flights observed
115
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S ABC5B8.

Country allocation

The ICAO 24-bit address ABC5B8 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
GTI8904 Atlas Air 12 2026-05-20
GTI537 Atlas Air 9 2026-04-15
GTI8187 Atlas Air 8 2026-05-24
GTI538 Atlas Air 8 2026-04-16
GTI8676 Atlas Air 7 2026-05-29
GTI654 Atlas Air 7 2026-04-14
GTI5421 Atlas Air 6 2026-05-23
GTI046 - 6 2026-05-02
GTI8832 Atlas Air 5 2026-05-20
GTI8028 Atlas Air 4 2026-05-30
GTI5420 Atlas Air 4 2026-05-23
GTI8992 Atlas Air 3 2026-05-10
GTI8971 Atlas Air 3 2026-05-07
GTI8869 Atlas Air 3 2026-04-24
GTI8439 Atlas Air 3 2026-05-13
GTI045 Atlas Air 3 2026-05-01
GTI8991 Atlas Air 2 2026-05-08
GTI8975 Atlas Air 2 2026-05-07
GTI8698 Atlas Air 2 2026-05-12
GTI8697 Atlas Air 2 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 GTI8028 LAX → ICN May 30, 09:40 UTCMay 30, 10:15 UTC35m
2026-05-29 GTI8028 LAX → ICN May 29, 22:40 UTCMay 30, 06:40 UTC8h 0m
2026-05-29 GTI8676 ANC → GDL May 29, 13:05 UTCMay 29, 19:10 UTC6h 5m
2026-05-29 GTI8676 ANC → GDL May 29, 04:35 UTCMay 29, 10:35 UTC6h 0m
2026-05-28 GTI8676 ANC → GDL May 28, 13:10 UTCMay 29, 02:00 UTC12h 50m
2026-05-26 GTI803 EZE → MIA May 26, 17:59 UTCMay 27, 07:40 UTC13h 40m
2026-05-26 GTI802 PVG → ANC May 26, 08:50 UTCMay 26, 14:20 UTC5h 30m
2026-05-25 GTI802 PVG → ANC May 25, 16:00 UTCMay 26, 05:59 UTC13h 59m
2026-05-24 GTI8187 AMS → ICN May 24, 23:30 UTCMay 24, 23:46 UTC16m
2026-05-24 GTI8187 AMS → ICN May 24, 12:20 UTCMay 24, 16:25 UTC4h 5m
2026-05-23 GTI5421 MIA → AMS May 23, 23:10 UTCMay 24, 07:20 UTC8h 10m
2026-05-23 GTI5421 MIA → AMS May 23, 12:50 UTCMay 23, 20:00 UTC7h 11m
2026-05-23 GTI5420 MIA → BOG May 23, 06:10 UTCMay 23, 09:10 UTC3h 0m
2026-05-22 GTI751 DFW → SDF May 22, 19:25 UTCMay 23, 03:00 UTC7h 34m
2026-05-22 GTI751 DFW → SDF May 22, 02:30 UTCMay 22, 17:35 UTC15h 5m
2026-05-21 GTI750 ORD → ANC May 21, 20:25 UTCMay 22, 17:35 UTC21h 10m
2026-05-21 GTI750R MIA → ANC May 21, 10:15 UTCMay 21, 18:10 UTC7h 55m
2026-05-20 GTI8832 GRK → HHN May 20, 15:35 UTCMay 20, 20:15 UTC4h 40m
2026-05-20 GTI8904 ANC → ORD May 20, 06:05 UTCMay 20, 08:15 UTC2h 10m
2026-05-19 GTI8904 ANC → ORD May 19, 20:00 UTCMay 20, 03:20 UTC7h 20m
2026-05-19 GTI8904 ANC → ORD May 19, 08:00 UTCMay 19, 15:50 UTC7h 50m
2026-05-19 GTI8904 ANC → ORD May 19, 05:30 UTCMay 19, 05:35 UTC5m
2026-05-18 GTI8904 ANC → ORD May 18, 16:20 UTCMay 19, 05:25 UTC13h 4m
2026-05-17 GTI8187 AMS → ICN May 17, 23:45 UTCMay 18, 00:05 UTC20m
2026-05-17 GTI8187 AMS → ICN May 17, 12:40 UTCMay 17, 22:55 UTC10h 15m
2026-05-16 GTI8028 LAX → ICN May 16, 08:16 UTCMay 16, 16:00 UTC7h 45m
2026-05-15 GTI8676 ANC → GDL May 15, 21:25 UTCMay 16, 05:10 UTC7h 45m
2026-05-15 GTI8676 ANC → GDL May 15, 13:10 UTCMay 15, 18:45 UTC5h 34m
2026-05-15 GTI8676 ANC → GDL May 15, 05:10 UTCMay 15, 10:50 UTC5h 40m
2026-05-14 GTI8676 ANC → GDL May 14, 13:20 UTCMay 15, 03:15 UTC13h 55m
2026-05-13 GTI8439 HNL → HKG May 13, 19:35 UTCMay 14, 10:00 UTC14h 25m
2026-05-13 GTI8439 HNL → HKG May 13, 16:10 UTCMay 13, 16:35 UTC25m
2026-05-13 GTI8439 HNL → HKG May 13, 11:45 UTCMay 13, 12:15 UTC30m
2026-05-13 GTI8028 LAX → ICN May 13, 03:15 UTCMay 13, 08:20 UTC5h 5m
2026-05-12 GTI8698 EMA → BAH May 12, 17:30 UTCMay 13, 00:25 UTC6h 55m
2026-05-12 GTI8698 EMA → BAH May 12, 05:35 UTCMay 12, 15:10 UTC9h 35m
2026-05-11 GTI8697 ORD → ICN May 11, 15:50 UTCMay 11, 22:35 UTC6h 45m
2026-05-11 GTI8697 ORD → ICN May 11, 07:40 UTCMay 11, 13:55 UTC6h 15m
2026-05-10 GTI8992 ANC → SDF May 10, 02:00 UTCMay 10, 07:40 UTC5h 40m
2026-05-09 GTI8992 ANC → SDF May 9, 17:00 UTCMay 9, 23:00 UTC6h 0m
2026-05-09 GTI8992 ANC → SDF May 9, 15:20 UTCMay 9, 15:35 UTC15m
2026-05-08 GTI8991 ORD → ANC May 8, 21:35 UTCMay 9, 11:00 UTC13h 25m
2026-05-08 GTI8991 ORD → ANC May 8, 04:49 UTCMay 8, 18:50 UTC14h 0m
2026-05-07 GTI8971 TPE → ANC May 7, 19:20 UTCMay 8, 00:40 UTC5h 20m
2026-05-07 GTI8971 TPE → ANC May 7, 09:50 UTCMay 7, 16:35 UTC6h 45m
2026-05-07 GTI8971 TPE → ANC May 7, 08:25 UTCMay 7, 08:35 UTC10m
2026-05-07 GTI8975 MIA → MAD May 7, 04:00 UTCMay 7, 04:55 UTC55m
2026-05-06 GTI8975 MIA → MAD May 6, 15:35 UTCMay 6, 21:00 UTC5h 24m
2026-05-02 GTI8093 SCL → MIA May 2, 18:40 UTCMay 3, 07:30 UTC12h 49m
2026-05-02 GTI8093 SCL → MIA May 2, 10:55 UTCMay 2, 16:25 UTC5h 30m

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 N858GT page for operator, model, and routing details .

Mode-S ABC5B8 frequently asked

What is Mode-S code ABC5B8?
ABC5B8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N858GT.
Where is Mode-S ABC5B8 registered?
Mode-S code ABC5B8 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is ABC5B8 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABC5B8, octal 52742670, decimal 11,257,272.
What flights does ABC5B8 operate?
Mode-S ABC5B8 has broadcast 20 distinct callsigns, including GTI8904, GTI537, GTI8187, GTI538, GTI8676.