Apparatus

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sensors Mode-S transponder

ABA800

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N850GT · BOEING 747-8 · operated by ATLAS AIR INC

Hex
ABA800
Octal
52724000
Decimal
11,249,664
Country
US
Tail
N850GT
Type
B748
Broadcasting now · callsign GTI8643 · 33,000 ft
Flights observed
176
Distinct callsigns
20
Country
US
Last broadcast
29d ago

Current position

ABA800 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABA800 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
GTI538 Atlas Air 27 2026-07-25
GTI537 Atlas Air 17 2026-07-24
GTI8904 Atlas Air 11 2026-07-21
GTI554 Atlas Air 7 2026-05-17
GTI557 Atlas Air 6 2026-05-18
GTI033 Atlas Air 6 2026-06-17
GTI8975 Atlas Air 4 2026-05-25
GTI8230 Atlas Air 4 2026-06-10
GTI752 - 4 2026-07-06
GTI654 - 4 2026-07-07
GTI075 Atlas Air 4 2026-07-17
GTI8992 Atlas Air 3 2026-05-23
GTI8991 Atlas Air 3 2026-05-23
GTI8971 Atlas Air 3 2026-05-20
GTI8832 - 3 2026-06-24
GTI8698 Atlas Air 3 2026-05-08
GTI8697 Atlas Air 3 2026-05-06
GTI8187 - 3 2026-07-19
GTI757 Atlas Air 3 2026-05-31
GTI743 - 3 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GTI634 SCL → UIO Jul 26, 19:10 UTCJul 26, 21:05 UTC1h 55m
2026-07-26 GTI634 SCL → UIO Jul 26, 13:25 UTCJul 26, 13:35 UTC10m
2026-07-26 GTI633 MIA → EZE Jul 26, 02:55 UTCJul 26, 07:25 UTC4h 31m
2026-07-25 GTI538 ANC → LAX Jul 25, 15:55 UTCJul 25, 23:10 UTC7h 15m
2026-07-24 GTI538 ANC → LAX Jul 24, 19:35 UTCJul 25, 10:30 UTC14h 55m
2026-07-24 GTI538 ANC → LAX Jul 24, 14:05 UTCJul 25, 10:30 UTC20h 25m
2026-07-24 GTI537 ANC → ICN Jul 24, 13:15 UTCJul 25, 10:30 UTC21h 15m
2026-07-24 GTI537 ANC → ICN Jul 24, 00:50 UTCJul 24, 09:00 UTC8h 10m
2026-07-23 GTI538 ANC → LAX Jul 23, 14:20 UTCJul 23, 21:20 UTC7h 0m
2026-07-22 GTI538 ANC → LAX Jul 22, 16:05 UTCJul 23, 11:45 UTC19h 40m
2026-07-22 GTI538 ANC → LAX Jul 22, 15:20 UTCJul 23, 11:45 UTC20h 25m
2026-07-22 GTI537 ANC → ICN Jul 22, 10:20 UTCJul 23, 06:10 UTC19h 50m
2026-07-21 GTI537 ANC → ICN Jul 21, 22:10 UTCJul 22, 17:05 UTC18h 55m
2026-07-21 GTI8904 ANC → ORD Jul 21, 07:55 UTCJul 21, 15:00 UTC7h 5m
2026-07-20 GTI8904 ANC → ORD Jul 20, 16:20 UTCJul 21, 05:25 UTC13h 4m
2026-07-19 GTI8187 AMS → ICN Jul 19, 13:05 UTCJul 19, 23:45 UTC10h 40m
2026-07-19 GTI5421 MIA → AMS Jul 19, 00:30 UTCJul 19, 08:55 UTC8h 25m
2026-07-18 GTI5421 MIA → AMS Jul 18, 13:40 UTCJul 18, 20:30 UTC6h 50m
2026-07-18 GTI5420 MIA → BOG Jul 18, 08:15 UTCJul 18, 11:15 UTC3h 0m
2026-07-18 GTI076 BOG → MIA Jul 18, 01:45 UTCJul 18, 04:40 UTC2h 56m
2026-07-17 GTI075 MIA → BOG Jul 17, 21:39 UTCJul 17, 22:00 UTC20m
2026-07-17 GTI075 MIA → BOG Jul 17, 19:00 UTCJul 17, 19:25 UTC25m
2026-07-16 GTI538 ANC → MIA Jul 16, 17:35 UTCJul 17, 00:45 UTC7h 10m
2026-07-16 GTI538 - Jul 16, 00:55 UTCJul 16, 15:55 UTC15h 0m
2026-07-15 GTI538 ANC → ANC Jul 15, 18:55 UTCJul 16, 15:55 UTC21h 0m
2026-07-15 GTI537 - Jul 15, 09:20 UTCJul 15, 17:00 UTC7h 40m
2026-07-14 GTI538 - Jul 14, 22:20 UTCJul 15, 05:40 UTC7h 19m
2026-07-14 GTI538 - Jul 14, 04:30 UTCJul 14, 19:45 UTC15h 15m
2026-07-13 GTI538 - Jul 13, 22:25 UTCJul 14, 19:45 UTC21h 20m
2026-07-13 GTI537 - Jul 13, 11:35 UTCJul 13, 20:00 UTC8h 25m
2026-07-13 GTI538 ANC → MIA Jul 13, 01:25 UTCJul 13, 08:50 UTC7h 25m
2026-07-12 GTI538 - Jul 12, 09:15 UTCJul 12, 23:30 UTC14h 15m
2026-07-12 GTI538 - Jul 12, 03:10 UTCJul 12, 23:30 UTC20h 20m
2026-07-11 GTI537 - Jul 11, 16:50 UTCJul 12, 00:30 UTC7h 40m
2026-07-10 GTI538 ANC → MIA Jul 10, 14:20 UTCJul 10, 22:10 UTC7h 51m
2026-07-10 GTI538 - Jul 10, 04:50 UTCJul 10, 12:15 UTC7h 25m
2026-07-08 GTI537 - Jul 8, 16:25 UTCJul 9, 00:35 UTC8h 10m
2026-07-08 GTI537 - Jul 8, 06:30 UTCJul 8, 14:15 UTC7h 45m
2026-07-07 GTI654 - Jul 7, 16:40 UTCJul 8, 00:10 UTC7h 30m
2026-07-07 GTI654 - Jul 7, 04:50 UTCJul 7, 14:20 UTC9h 30m
2026-07-06 GTI752 - Jul 6, 07:40 UTCJul 6, 21:55 UTC14h 15m
2026-07-06 GTI752 - Jul 6, 01:00 UTCJul 6, 05:40 UTC4h 40m
2026-07-05 GTI743 - Jul 5, 13:10 UTCJul 5, 20:40 UTC7h 30m
2026-07-04 GTI743 - Jul 4, 16:05 UTCJul 5, 11:20 UTC19h 15m
2026-07-04 GTI743 - Jul 4, 14:45 UTCJul 5, 11:20 UTC20h 35m
2026-07-04 GTI742 - Jul 4, 10:30 UTCJul 5, 10:00 UTC23h 30m
2026-07-04 GTI742 - Jul 4, 09:10 UTCJul 5, 05:25 UTC20h 15m
2026-07-03 GTI742 - Jul 3, 23:00 UTCJul 4, 07:05 UTC8h 5m
2026-07-03 GTI076 - Jul 3, 17:15 UTCJul 3, 17:55 UTC40m
2026-07-03 GTI075 - Jul 3, 07:30 UTCJul 3, 07:55 UTC25m

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 N850GT page for operator, model, and routing details .

Mode-S ABA800 frequently asked

What is Mode-S code ABA800?
ABA800 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N850GT.
Where is Mode-S ABA800 registered?
Mode-S code ABA800 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 ABA800 broadcasting right now?
Yes. Mode-S ABA800 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABA800, octal 52724000, decimal 11,249,664.
What flights does ABA800 operate?
Mode-S ABA800 has broadcast 20 distinct callsigns, including GTI538, GTI537, GTI8904, GTI554, GTI557.