Apparatus

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sensors Mode-S transponder

ABB6DC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N854GT · BOEING 747-8 · operated by ATLAS AIR INC

Hex
ABB6DC
Octal
52733334
Decimal
11,253,468
Country
US
Tail
N854GT
Type
B748
No current signal · last broadcast 8h ago
Flights observed
140
Distinct callsigns
15
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S ABB6DC.

Country allocation

The ICAO 24-bit address ABB6DC 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 15 distinct

Callsign Airline Flights Last seen
GTI804 - 52 2026-07-06
GTI803 - 29 2026-07-05
GTI802 Atlas Air 24 2026-06-23
GTI801 - 11 2026-07-06
GTI8052 - 5 2026-07-12
GTI8292 - 4 2026-07-10
GTI9231 - 2 2026-07-03
GTI8994 Atlas Air 2 2026-04-20
GTI8413 - 2 2026-07-14
GTI8331 - 2 2026-06-30
GTI825 - 2 2026-07-08
GTI8030 - 2 2026-07-13
GTI8993 Atlas Air 1 2026-04-18
GTI8330 - 1 2026-06-29
GTI7582 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GTI8413 - Jul 14, 05:15 UTCJul 14, 06:35 UTC1h 20m
2026-07-13 GTI8413 - Jul 13, 18:00 UTCJul 14, 02:35 UTC8h 35m
2026-07-13 GTI8030 - Jul 13, 00:10 UTCJul 13, 04:50 UTC4h 40m
2026-07-12 GTI8030 - Jul 12, 21:20 UTCJul 12, 21:30 UTC10m
2026-07-12 GTI8052 - Jul 12, 14:40 UTCJul 12, 17:35 UTC2h 55m
2026-07-12 GTI8052 - Jul 12, 04:15 UTCJul 12, 12:01 UTC7h 45m
2026-07-11 GTI8052 - Jul 11, 17:40 UTCJul 12, 00:55 UTC7h 15m
2026-07-11 GTI8052 - Jul 11, 07:35 UTCJul 11, 15:00 UTC7h 25m
2026-07-11 GTI8052 - Jul 11, 05:25 UTCJul 11, 05:40 UTC15m
2026-07-10 GTI8292 - Jul 10, 10:40 UTCJul 10, 19:20 UTC8h 40m
2026-07-10 GTI8292 - Jul 10, 02:10 UTCJul 10, 06:05 UTC3h 55m
2026-07-09 GTI8292 - Jul 9, 14:00 UTCJul 9, 23:05 UTC9h 5m
2026-07-09 GTI8292 - Jul 9, 08:15 UTCJul 9, 10:20 UTC2h 5m
2026-07-08 GTI825 - Jul 8, 21:40 UTCJul 9, 05:05 UTC7h 25m
2026-07-08 GTI825 HKG → ANC Jul 8, 10:05 UTCJul 8, 19:45 UTC9h 40m
2026-07-08 GTI7582 ICN → HKG Jul 8, 03:20 UTCJul 8, 06:35 UTC3h 15m
2026-07-06 GTI801 ORD → ICN Jul 6, 18:35 UTCJul 7, 07:40 UTC13h 5m
2026-07-06 GTI804 ANC → ORD Jul 6, 10:45 UTCJul 6, 16:00 UTC5h 15m
2026-07-05 GTI804 ICN → ANC Jul 5, 18:00 UTCJul 6, 08:55 UTC14h 55m
2026-07-05 GTI803 ORD → ICN Jul 5, 03:10 UTCJul 5, 16:05 UTC12h 55m
2026-07-04 GTI804 ANC → ORD Jul 4, 17:45 UTCJul 4, 23:20 UTC5h 35m
2026-07-04 GTI804 - Jul 4, 00:20 UTCJul 4, 15:15 UTC14h 55m
2026-07-03 GTI9231 - Jul 3, 21:25 UTCJul 3, 21:50 UTC25m
2026-07-03 GTI9231 - Jul 3, 10:30 UTCJul 3, 20:45 UTC10h 15m
2026-06-30 GTI8331 - Jun 30, 04:20 UTCJun 30, 09:00 UTC4h 40m
2026-06-29 GTI8331 - Jun 29, 17:40 UTCJun 29, 17:59 UTC20m
2026-06-29 GTI8330 ICN → HKG Jun 29, 10:40 UTCJun 29, 13:44 UTC3h 5m
2026-06-28 GTI801 ORD → ICN Jun 28, 00:09 UTCJun 28, 13:29 UTC13h 20m
2026-06-27 GTI804 ANC → ORD Jun 27, 15:34 UTCJun 27, 21:04 UTC5h 30m
2026-06-26 GTI804 ICN → ANC Jun 26, 22:40 UTCJun 27, 13:35 UTC14h 55m
2026-06-26 GTI803 ORD → ICN Jun 26, 00:59 UTCJun 26, 14:39 UTC13h 40m
2026-06-25 GTI804 ANC → ORD Jun 25, 13:45 UTCJun 25, 19:05 UTC5h 20m
2026-06-24 GTI804 ICN → ANC Jun 24, 21:54 UTCJun 25, 11:39 UTC13h 45m
2026-06-24 GTI803 ORD → ICN Jun 24, 00:20 UTCJun 24, 14:00 UTC13h 40m
2026-06-23 GTI802 PVG → ANC Jun 23, 13:39 UTCJun 23, 18:45 UTC5h 5m
2026-06-22 GTI802 PVG → ANC Jun 22, 22:10 UTCJun 23, 11:49 UTC13h 40m
2026-06-20 GTI801 ORD → ICN Jun 20, 23:39 UTCJun 21, 13:04 UTC13h 25m
2026-06-20 GTI804 ANC → ORD Jun 20, 13:44 UTCJun 20, 19:09 UTC5h 25m
2026-06-19 GTI804 ICN → ANC Jun 19, 21:44 UTCJun 20, 11:34 UTC13h 50m
2026-06-19 GTI803 - Jun 19, 01:24 UTCJun 19, 14:39 UTC13h 15m
2026-06-18 GTI804 ANC → ORD Jun 18, 16:45 UTCJun 18, 21:55 UTC5h 10m
2026-06-18 GTI804 - Jun 18, 01:00 UTCJun 18, 14:15 UTC13h 15m
2026-06-17 GTI803 EZE → MIA Jun 17, 01:20 UTCJun 17, 14:35 UTC13h 15m
2026-06-16 GTI802 PVG → ANC Jun 16, 13:34 UTCJun 16, 18:35 UTC5h 0m
2026-06-15 GTI802 PVG → ANC Jun 15, 21:55 UTCJun 16, 11:30 UTC13h 35m
2026-06-14 GTI801 TLV → LGG Jun 14, 17:05 UTCJun 15, 07:05 UTC13h 59m
2026-06-14 GTI804 ORD → JFK Jun 14, 08:35 UTCJun 14, 13:50 UTC5h 15m
2026-06-13 GTI804 ORD → JFK Jun 13, 16:45 UTCJun 14, 06:25 UTC13h 40m
2026-06-13 GTI803 EZE → MIA Jun 13, 00:10 UTCJun 13, 13:25 UTC13h 14m
2026-06-12 GTI804 ORD → JFK Jun 12, 14:10 UTCJun 12, 19:40 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 N854GT page for operator, model, and routing details .

Mode-S ABB6DC frequently asked

What is Mode-S code ABB6DC?
ABB6DC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N854GT.
Where is Mode-S ABB6DC registered?
Mode-S code ABB6DC 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 ABB6DC broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB6DC, octal 52733334, decimal 11,253,468.
What flights does ABB6DC operate?
Mode-S ABB6DC has broadcast 15 distinct callsigns, including GTI804, GTI803, GTI802, GTI801, GTI8052.