Apparatus

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sensors Mode-S transponder

ABABB7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N851GT · BOEING 747-8 · operated by ATLAS AIR INC

Hex
ABABB7
Octal
52725667
Decimal
11,250,615
Country
US
Tail
N851GT
Type
B748
Broadcasting now · callsign GTI8028 · 1,350 ft
Flights observed
157
Distinct callsigns
20
Country
US
Last broadcast
14m ago

Current position

ABABB7 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ABABB7 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
GTI8228 - 17 2026-07-13
GTI8052 - 13 2026-07-05
GTI8094 Atlas Air 11 2026-04-17
GTI8030 Atlas Air 11 2026-07-06
GTI8414 - 10 2026-07-08
GTI8028 - 9 2026-07-14
GTI8755 - 7 2026-07-11
GTI5561 Atlas Air 6 2026-04-16
GTI8702 Atlas Air 4 2026-06-07
GTI8701 Atlas Air 4 2026-06-05
GTI8050 - 4 2026-07-01
GTI755 - 4 2026-07-10
GTI8995 - 3 2026-06-28
GTI8994 Atlas Air 3 2026-05-28
GTI8907 Atlas Air 3 2026-04-24
GTI8413 - 3 2026-07-07
GTI8286 - 3 2026-06-17
GTI8209 Atlas Air 3 2026-06-13
GTI654 Atlas Air 3 2026-05-25
GTI5559 Atlas Air 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GTI8028 - Jul 14, 01:50 UTCJul 14, 09:45 UTC7h 55m
2026-07-13 GTI8028 - Jul 13, 17:10 UTCJul 13, 22:05 UTC4h 55m
2026-07-13 GTI8028 - Jul 13, 14:15 UTCJul 13, 14:25 UTC10m
2026-07-13 GTI8228 - Jul 13, 08:15 UTCJul 13, 11:15 UTC3h 0m
2026-07-12 GTI8228 - Jul 12, 21:30 UTCJul 13, 04:50 UTC7h 20m
2026-07-12 GTI8228 ANC → MIA Jul 12, 09:50 UTCJul 12, 17:05 UTC7h 15m
2026-07-11 GTI8228 - Jul 11, 22:35 UTCJul 12, 07:25 UTC8h 50m
2026-07-11 GTI8228 - Jul 11, 21:40 UTCJul 11, 22:05 UTC25m
2026-07-11 GTI8755 - Jul 11, 17:25 UTCJul 11, 17:45 UTC20m
2026-07-11 GTI8755 - Jul 11, 14:55 UTCJul 11, 15:35 UTC40m
2026-07-10 GTI9053 - Jul 10, 17:00 UTCJul 11, 06:15 UTC13h 15m
2026-07-10 GTI755 ANC → ORD Jul 10, 07:45 UTCJul 10, 13:00 UTC5h 15m
2026-07-09 GTI755 ICN → ANC Jul 9, 16:50 UTCJul 10, 06:10 UTC13h 20m
2026-07-08 GTI8414 - Jul 8, 21:30 UTCJul 8, 21:55 UTC25m
2026-07-08 GTI8414 - Jul 8, 10:50 UTCJul 8, 20:40 UTC9h 50m
2026-07-07 GTI8414 - Jul 7, 23:20 UTCJul 8, 07:35 UTC8h 15m
2026-07-07 GTI8413 - Jul 7, 05:55 UTCJul 7, 19:20 UTC13h 25m
2026-07-06 GTI8413 - Jul 6, 18:15 UTCJul 7, 02:05 UTC7h 50m
2026-07-06 GTI8030 LAX → GRU Jul 6, 00:05 UTCJul 6, 04:50 UTC4h 45m
2026-07-05 GTI8030 LAX → GRU Jul 5, 21:00 UTCJul 5, 21:10 UTC10m
2026-07-05 GTI8052 - Jul 5, 14:10 UTCJul 5, 17:00 UTC2h 50m
2026-07-05 GTI8052 - Jul 5, 03:40 UTCJul 5, 11:15 UTC7h 35m
2026-07-04 GTI8052 ANC → MIA Jul 4, 16:30 UTCJul 4, 23:55 UTC7h 25m
2026-07-04 GTI8052 - Jul 4, 06:00 UTCJul 4, 14:40 UTC8h 40m
2026-07-04 GTI8052 - Jul 4, 05:10 UTCJul 4, 05:30 UTC20m
2026-07-04 GTI8051 - Jul 4, 00:50 UTCJul 4, 01:10 UTC20m
2026-07-03 GTI8051 - Jul 3, 22:10 UTCJul 4, 00:20 UTC2h 10m
2026-07-03 GTI8185 - Jul 3, 17:10 UTCJul 3, 17:30 UTC20m
2026-07-03 GTI8185 - Jul 3, 06:25 UTCJul 3, 16:30 UTC10h 5m
2026-07-02 GTI5219 - Jul 2, 10:00 UTCJul 2, 17:55 UTC7h 55m
2026-07-01 GTI8050 - Jul 1, 18:25 UTCJul 2, 05:55 UTC11h 30m
2026-07-01 GTI8050 - Jul 1, 07:45 UTCJul 1, 15:10 UTC7h 25m
2026-06-30 GTI8050 ANC → MIA Jun 30, 20:50 UTCJul 1, 04:25 UTC7h 35m
2026-06-30 GTI8050 HKG → ANC Jun 30, 09:40 UTCJun 30, 18:55 UTC9h 15m
2026-06-29 GTI9447 - Jun 29, 19:24 UTCJun 30, 05:40 UTC10h 16m
2026-06-28 CMB436 - Jun 28, 19:40 UTCJun 29, 03:25 UTC7h 45m
2026-06-28 GTI8995 - Jun 28, 12:05 UTCJun 28, 14:14 UTC2h 10m
2026-06-27 GTI8049 - Jun 27, 23:45 UTCJun 28, 00:15 UTC30m
2026-06-27 GTI8049 - Jun 27, 16:49 UTCJun 27, 16:59 UTC10m
2026-06-27 GTI8228 - Jun 27, 10:40 UTCJun 27, 13:15 UTC2h 35m
2026-06-27 GTI8228 - Jun 27, 00:29 UTCJun 27, 07:55 UTC7h 25m
2026-06-26 GTI8228 ANC → MIA Jun 26, 12:29 UTCJun 26, 19:50 UTC7h 20m
2026-06-26 GTI8228 - Jun 26, 00:05 UTCJun 26, 09:35 UTC9h 30m
2026-06-25 GTI8755 - Jun 25, 17:25 UTCJun 25, 17:39 UTC15m
2026-06-25 GTI8755 - Jun 25, 14:29 UTCJun 25, 15:10 UTC40m
2026-06-24 GTI8414 - Jun 24, 19:55 UTCJun 24, 20:20 UTC25m
2026-06-24 GTI8414 - Jun 24, 09:24 UTCJun 24, 19:15 UTC9h 50m
2026-06-23 GTI8414 - Jun 23, 22:15 UTCJun 24, 06:39 UTC8h 25m
2026-06-23 GTI8414 - Jun 23, 07:19 UTCJun 23, 17:59 UTC10h 40m
2026-06-22 GTI8028 - Jun 22, 18:44 UTCJun 23, 02:49 UTC8h 5m

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 N851GT page for operator, model, and routing details .

Mode-S ABABB7 frequently asked

What is Mode-S code ABABB7?
ABABB7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N851GT.
Where is Mode-S ABABB7 registered?
Mode-S code ABABB7 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 ABABB7 broadcasting right now?
Yes. Mode-S ABABB7 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABABB7, octal 52725667, decimal 11,250,615.
What flights does ABABB7 operate?
Mode-S ABABB7 has broadcast 20 distinct callsigns, including GTI8228, GTI8052, GTI8094, GTI8030, GTI8414.