Apparatus

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sensors Mode-S transponder

A865E3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N640GT · BOEING 767-300 · operated by ATLAS AIR INC

Hex
A865E3
Octal
52062743
Decimal
11,036,131
Country
US
Tail
N640GT
Type
B763
No current signal · last broadcast 2h ago
Flights observed
70
Distinct callsigns
12
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A865E3.

Country allocation

The ICAO 24-bit address A865E3 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 12 distinct

Callsign Airline Flights Last seen
GTI8190 Atlas Air 23 2026-05-30
GTI8189 Atlas Air 22 2026-05-29
GTI8354 Atlas Air 6 2026-05-26
GTI8353 Atlas Air 5 2026-05-24
GTI8511 Atlas Air 4 2026-05-06
GTI8189A - 3 2026-05-08
GTI8278 Atlas Air 2 2026-04-19
GTI9911 Atlas Air 1 2026-05-06
GTI9880 Atlas Air 1 2026-04-20
GTI9008 Atlas Air 1 2026-05-21
GTI9005 Atlas Air 1 2026-05-17
CMB548 - 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 GTI8190 OKO → SEA May 30, 08:10 UTCMay 30, 09:00 UTC50m
2026-05-30 GTI8190 OKO → SEA May 30, 06:05 UTCMay 30, 06:15 UTC10m
2026-05-29 GTI8189 SEA → OKO May 29, 09:00 UTCMay 29, 09:15 UTC15m
2026-05-29 GTI8189 SEA → OKO May 29, 06:25 UTCMay 29, 07:35 UTC1h 10m
2026-05-28 GTI8189 SEA → OKO May 28, 16:00 UTCMay 29, 02:30 UTC10h 30m
2026-05-26 GTI8354 YWG → LGG May 26, 09:29 UTCMay 26, 17:50 UTC8h 20m
2026-05-26 GTI8354 YWG → LGG May 26, 04:35 UTCMay 26, 06:14 UTC1h 40m
2026-05-24 GTI8353 SEA → ANC May 24, 17:10 UTCMay 25, 09:20 UTC16h 10m
2026-05-23 GTI8190 OKO → SEA May 23, 12:10 UTCMay 23, 20:55 UTC8h 45m
2026-05-23 GTI8190 OKO → SEA May 23, 08:15 UTCMay 23, 09:10 UTC55m
2026-05-23 GTI8190 OKO → SEA May 23, 06:20 UTCMay 23, 06:40 UTC20m
2026-05-22 GTI8189 SEA → OKO May 22, 09:10 UTCMay 22, 09:25 UTC15m
2026-05-22 GTI8189 SEA → OKO May 22, 06:35 UTCMay 22, 07:30 UTC55m
2026-05-21 GTI8189 SEA → OKO May 21, 15:10 UTCMay 22, 01:35 UTC10h 25m
2026-05-21 GTI9008 BFI → SEA May 21, 04:05 UTCMay 21, 04:25 UTC20m
2026-05-17 GTI9005 SNN → ICN May 17, 00:10 UTCMay 17, 00:20 UTC10m
2026-05-16 GTI8190 OKO → SEA May 16, 12:40 UTCMay 16, 21:40 UTC9h 0m
2026-05-16 GTI8190 OKO → SEA May 16, 08:26 UTCMay 16, 09:31 UTC1h 5m
2026-05-16 GTI8190 OKO → SEA May 16, 06:41 UTCMay 16, 06:55 UTC15m
2026-05-16 GTI8190 OKO → SEA May 16, 05:35 UTCMay 16, 05:56 UTC21m
2026-05-15 GTI8189 SEA → OKO May 15, 09:00 UTCMay 15, 10:25 UTC1h 25m
2026-05-15 GTI8189 SEA → OKO May 15, 06:25 UTCMay 15, 07:20 UTC55m
2026-05-14 GTI8189 SEA → OKO May 14, 15:05 UTCMay 15, 00:25 UTC9h 20m
2026-05-12 GTI8354 YWG → LGG May 12, 16:30 UTCMay 12, 17:15 UTC45m
2026-05-12 GTI8354 YWG → LGG May 12, 03:40 UTCMay 12, 05:25 UTC1h 45m
2026-05-10 GTI8353 SEA → ANC May 10, 17:34 UTCMay 11, 07:30 UTC13h 55m
2026-05-09 GTI8190 OKO → SEA May 9, 12:30 UTCMay 9, 21:05 UTC8h 35m
2026-05-09 GTI8190 OKO → SEA May 9, 08:10 UTCMay 9, 09:05 UTC55m
2026-05-09 GTI8190 OKO → SEA May 9, 06:20 UTCMay 9, 06:35 UTC15m
2026-05-09 GTI8190 OKO → SEA May 9, 05:20 UTCMay 9, 05:35 UTC15m
2026-05-08 GTI8189A OKE → DNA May 8, 10:49 UTCMay 8, 11:19 UTC30m
2026-05-08 GTI8189A - May 8, 09:44 UTCMay 8, 09:59 UTC15m
2026-05-08 GTI8189A - May 8, 06:59 UTCMay 8, 08:05 UTC1h 5m
2026-05-07 GTI8189 SEA → OKO May 7, 15:05 UTCMay 8, 01:19 UTC10h 15m
2026-05-06 GTI9911 HNL → SEA May 6, 11:55 UTCMay 6, 17:20 UTC5h 25m
2026-05-06 GTI8511 SEA → YUM May 6, 09:00 UTCMay 6, 09:35 UTC35m
2026-05-04 GTI8511 SEA → YUM May 4, 11:10 UTCMay 4, 11:25 UTC15m
2026-05-04 GTI8511 SEA → YUM May 4, 01:20 UTCMay 4, 07:25 UTC6h 5m
2026-05-03 GTI8511 SEA → YUM May 3, 17:40 UTCMay 3, 19:55 UTC2h 15m
2026-05-02 GTI8190 OKO → SEA May 2, 10:45 UTCMay 2, 19:45 UTC9h 0m
2026-05-02 GTI8190 OKO → SEA May 2, 04:55 UTCMay 2, 06:50 UTC1h 55m
2026-05-01 GTI8189 SEA → OKO May 1, 06:50 UTCMay 1, 09:15 UTC2h 25m
2026-04-30 GTI8189 SEA → OKO Apr 30, 16:05 UTCMay 1, 02:25 UTC10h 20m
2026-04-26 GTI8190 OKO → SEA Apr 26, 14:15 UTCApr 26, 17:15 UTC3h 0m
2026-04-25 GTI8190 OKO → SEA Apr 25, 14:20 UTCApr 25, 20:45 UTC6h 25m
2026-04-25 GTI8190 OKO → SEA Apr 25, 08:00 UTCApr 25, 08:55 UTC55m
2026-04-25 GTI8190 OKO → SEA Apr 25, 06:15 UTCApr 25, 06:30 UTC15m
2026-04-25 GTI8190 OKO → SEA Apr 25, 05:10 UTCApr 25, 05:30 UTC20m
2026-04-24 GTI8189 SEA → OKO Apr 24, 10:25 UTCApr 24, 10:45 UTC20m
2026-04-24 GTI8189 SEA → OKO Apr 24, 09:15 UTCApr 24, 09:35 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 N640GT page for operator, model, and routing details .

Mode-S A865E3 frequently asked

What is Mode-S code A865E3?
A865E3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N640GT.
Where is Mode-S A865E3 registered?
Mode-S code A865E3 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 A865E3 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 A865E3, octal 52062743, decimal 11,036,131.
What flights does A865E3 operate?
Mode-S A865E3 has broadcast 12 distinct callsigns, including GTI8190, GTI8189, GTI8354, GTI8353, GTI8511.