Apparatus

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sensors Mode-S transponder

A8BC4F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N662GT · BOEING 767-300 · operated by ATLAS AIR INC

Hex
A8BC4F
Octal
52136117
Decimal
11,058,255
Country
US
Tail
N662GT
Type
B763
Broadcasting now · callsign GTI8868 · 35,000 ft
Flights observed
47
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A8BC4F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A8BC4F 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
GTI8189 Atlas Air 5 2026-06-05
GTI8773 - 3 2026-06-13
GTI8699 Atlas Air 3 2026-06-01
GTI8190 Atlas Air 3 2026-06-07
CMB387 - 3 2026-05-08
GTI9908 Atlas Air 2 2026-04-30
GTI8868 - 2 2026-06-14
GTI8746 Atlas Air 2 2026-05-26
GTI8496 Atlas Air 2 2026-05-01
GTI8354 Atlas Air 2 2026-06-09
GTI8353 Atlas Air 2 2026-06-08
CMB512 - 2 2026-06-12
CMB504 - 2 2026-05-31
CMB140 - 2 2026-05-15
GTI9979 Atlas Air 1 2026-05-28
GTI9978 Atlas Air 1 2026-05-24
GTI9190 Atlas Air 1 2026-06-04
GTI9029 Atlas Air 1 2026-05-15
GTI9028 Atlas Air 1 2026-06-11
GTI9001 Atlas Air 1 2026-05-19

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-06-14 GTI8868 - Jun 14, 05:35 UTCJun 14, 08:15 UTC2h 40m
2026-06-13 GTI8868 - Jun 13, 22:50 UTCJun 14, 02:00 UTC3h 10m
2026-06-13 GTI8773 AUS → CVG Jun 13, 03:15 UTCJun 13, 05:20 UTC2h 5m
2026-06-12 GTI8773 - Jun 12, 19:45 UTCJun 12, 23:35 UTC3h 50m
2026-06-12 GTI8773 - Jun 12, 08:45 UTCJun 12, 16:25 UTC7h 40m
2026-06-12 CMB512 - Jun 12, 04:50 UTCJun 12, 05:20 UTC30m
2026-06-11 CMB512 - Jun 11, 17:25 UTCJun 12, 00:15 UTC6h 50m
2026-06-11 GTI8772 - Jun 11, 08:35 UTCJun 11, 11:25 UTC2h 50m
2026-06-11 GTI9028 MIA → ANC Jun 11, 01:15 UTCJun 11, 03:55 UTC2h 40m
2026-06-09 GTI8354 YWG → LGG Jun 9, 09:20 UTCJun 9, 18:00 UTC8h 40m
2026-06-09 GTI8354 YWG → LGG Jun 9, 04:10 UTCJun 9, 05:40 UTC1h 30m
2026-06-08 GTI8353 SEA → ANC Jun 8, 07:55 UTCJun 8, 08:15 UTC20m
2026-06-07 GTI8353 SEA → ANC Jun 7, 17:55 UTCJun 8, 07:15 UTC13h 20m
2026-06-07 GTI8190 OKO → SEA Jun 7, 05:30 UTCJun 7, 14:05 UTC8h 35m
2026-06-06 GTI8190 OKO → SEA Jun 6, 08:00 UTCJun 6, 09:00 UTC1h 0m
2026-06-06 GTI8190 OKO → SEA Jun 6, 06:25 UTCJun 6, 06:40 UTC15m
2026-06-05 GTI8189 SEA → OKO Jun 5, 10:20 UTCJun 5, 10:35 UTC15m
2026-06-05 GTI8189 SEA → OKO Jun 5, 07:10 UTCJun 5, 08:15 UTC1h 5m
2026-06-05 GTI8189 SEA → OKO Jun 5, 03:05 UTCJun 5, 03:40 UTC35m
2026-06-04 GTI8189 SEA → OKO Jun 4, 20:45 UTCJun 4, 22:25 UTC1h 40m
2026-06-04 GTI8189 SEA → OKO Jun 4, 15:20 UTCJun 4, 18:30 UTC3h 10m
2026-06-04 GTI9190 SEA → ELP Jun 4, 03:00 UTCJun 4, 07:15 UTC4h 15m
2026-06-01 GTI8699 ANC → SZX Jun 1, 11:05 UTCJun 1, 13:10 UTC2h 5m
2026-06-01 GTI8699 ANC → SZX Jun 1, 04:15 UTCJun 1, 08:05 UTC3h 50m
2026-05-31 GTI8699 ANC → SZX May 31, 18:50 UTCJun 1, 02:05 UTC7h 15m
2026-05-31 CMB504 - May 31, 09:40 UTCMay 31, 14:10 UTC4h 30m
2026-05-29 CMB504 - May 29, 10:00 UTCMay 29, 19:45 UTC9h 45m
2026-05-28 GTI9979 TMP → CVG May 28, 03:35 UTCMay 28, 12:45 UTC9h 10m
2026-05-26 GTI8746 - May 26, 11:34 UTCMay 26, 12:20 UTC45m
2026-05-25 GTI8746 - May 25, 23:00 UTCMay 26, 06:39 UTC7h 40m
2026-05-24 GTI9978 - May 24, 21:05 UTCMay 24, 21:45 UTC40m
2026-05-19 GTI9001 MIA → ORD May 19, 05:55 UTCMay 19, 07:15 UTC1h 20m
2026-05-19 GTI8587 HHN → PSM May 19, 00:35 UTCMay 19, 01:40 UTC1h 5m
2026-05-18 CMB598 - May 18, 13:15 UTCMay 18, 20:45 UTC7h 29m
2026-05-18 GTI8585 CVG → RMS May 18, 00:05 UTCMay 18, 08:20 UTC8h 15m
2026-05-15 GTI9029 BWI → CVG May 15, 21:40 UTCMay 15, 22:55 UTC1h 15m
2026-05-15 CMB140 - May 15, 10:15 UTCMay 15, 18:40 UTC8h 24m
2026-05-14 CMB140 - May 14, 22:05 UTCMay 15, 05:35 UTC7h 30m
2026-05-09 GTI8377 HHN → PSM May 9, 03:45 UTCMay 9, 04:40 UTC55m
2026-05-08 CMB387 - May 8, 15:10 UTCMay 8, 23:30 UTC8h 20m
2026-05-07 CMB387 - May 7, 14:30 UTCMay 7, 15:35 UTC1h 5m
2026-05-07 CMB387 - May 7, 01:30 UTCMay 7, 10:45 UTC9h 15m
2026-05-06 GTI8536 TCM → IAH May 6, 19:35 UTCMay 6, 21:10 UTC1h 35m
2026-05-01 GTI8496 ANC → ORD May 1, 12:15 UTCMay 1, 18:15 UTC6h 0m
2026-05-01 GTI8496 ANC → ORD May 1, 00:55 UTCMay 1, 10:35 UTC9h 40m
2026-04-30 GTI9908 MIA → HHN Apr 30, 06:35 UTCApr 30, 06:40 UTC5m
2026-04-30 GTI9908 MIA → HHN Apr 30, 03:20 UTCApr 30, 03:40 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 N662GT page for operator, model, and routing details .

Mode-S A8BC4F frequently asked

What is Mode-S code A8BC4F?
A8BC4F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N662GT.
Where is Mode-S A8BC4F registered?
Mode-S code A8BC4F 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 A8BC4F broadcasting right now?
Yes. Mode-S A8BC4F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A8BC4F, octal 52136117, decimal 11,058,255.
What flights does A8BC4F operate?
Mode-S A8BC4F has broadcast 20 distinct callsigns, including GTI8189, GTI8773, GTI8699, GTI8190, CMB387.