Apparatus

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sensors Mode-S transponder

A5417E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N438GT · BOEING 747-400 · operated by ATLAS AIR INC

Hex
A5417E
Octal
51240576
Decimal
10,830,206
Country
US
Tail
N438GT
Type
B744
No current signal · last broadcast 1h ago
Flights observed
212
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A5417E.

Country allocation

The ICAO 24-bit address A5417E 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
GTI8998 - 57 2026-07-13
GTI8997 - 37 2026-07-13
GTI8174 - 15 2026-07-11
GTI8692 Atlas Air 7 2026-06-17
GTI8296 Atlas Air 6 2026-06-08
GTI8422 - 5 2026-06-27
GTI9191 Atlas Air 4 2026-06-05
GTI8835 Atlas Air 4 2026-06-16
GTI8818 Atlas Air 4 2026-05-04
GTI8817 Atlas Air 4 2026-05-02
GTI8816 - 4 2026-07-04
GTI8631 Atlas Air 4 2026-05-10
GTI862 Atlas Air 4 2026-06-02
GTI8365 Atlas Air 4 2026-06-11
GTI8173 - 4 2026-07-07
GTI8815 - 3 2026-07-03
GTI863 Atlas Air 3 2026-06-03
GTI8503 Atlas Air 3 2026-05-14
GTI8120 - 3 2026-07-06
GTI8117 - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 GTI8997 - Jul 13, 23:55 UTCJul 14, 07:30 UTC7h 35m
2026-07-13 GTI8998 - Jul 13, 07:30 UTCJul 13, 14:55 UTC7h 25m
2026-07-12 GTI8998 - Jul 12, 12:01 UTCJul 13, 05:20 UTC17h 20m
2026-07-12 GTI8998 ANC → ANC Jul 12, 06:10 UTCJul 13, 05:20 UTC23h 10m
2026-07-11 GTI8997 - Jul 11, 19:35 UTCJul 12, 03:45 UTC8h 10m
2026-07-11 GTI8174 - Jul 11, 08:40 UTCJul 11, 16:10 UTC7h 30m
2026-07-10 GTI8174 - Jul 10, 08:45 UTCJul 10, 16:15 UTC7h 30m
2026-07-10 GTI8174 - Jul 10, 06:30 UTCJul 10, 06:50 UTC20m
2026-07-09 GTI9075 - Jul 9, 12:50 UTCJul 10, 02:45 UTC13h 55m
2026-07-09 GTI8174 - Jul 9, 07:00 UTCJul 9, 10:10 UTC3h 10m
2026-07-09 GTI8174 - Jul 9, 03:35 UTCJul 9, 03:55 UTC20m
2026-07-08 GTI8174 - Jul 8, 20:55 UTCJul 9, 02:05 UTC5h 10m
2026-07-08 GTI8174 - Jul 8, 10:55 UTCJul 8, 18:30 UTC7h 35m
2026-07-07 GTI8174 - Jul 7, 18:20 UTCJul 8, 17:30 UTC23h 10m
2026-07-07 GTI8173 - Jul 7, 11:35 UTCJul 8, 11:30 UTC23h 55m
2026-07-07 GTI8173 - Jul 7, 08:00 UTCJul 7, 20:10 UTC12h 10m
2026-07-06 GTI8120 - Jul 6, 23:45 UTCJul 7, 04:25 UTC4h 40m
2026-07-06 GTI8120 ICN → ANC Jul 6, 14:30 UTCJul 6, 21:55 UTC7h 25m
2026-07-06 GTI8120 - Jul 6, 11:20 UTCJul 6, 11:40 UTC20m
2026-07-06 GTI8117 - Jul 6, 05:40 UTCJul 6, 05:50 UTC10m
2026-07-05 GTI8117 - Jul 5, 22:20 UTCJul 5, 23:00 UTC40m
2026-07-05 GTI8117 - Jul 5, 00:45 UTCJul 5, 12:50 UTC12h 5m
2026-07-04 GTI8816 - Jul 4, 18:30 UTCJul 4, 19:35 UTC1h 5m
2026-07-04 GTI8816 - Jul 4, 11:30 UTCJul 4, 15:50 UTC4h 20m
2026-07-04 GTI8816 - Jul 4, 00:10 UTCJul 4, 07:55 UTC7h 45m
2026-07-03 GTI8816 DNA → OSN Jul 3, 09:15 UTCJul 3, 10:55 UTC1h 40m
2026-07-03 GTI8815 - Jul 3, 05:10 UTCJul 3, 05:20 UTC10m
2026-07-02 GTI8815 - Jul 2, 11:15 UTCJul 2, 11:40 UTC25m
2026-07-02 GTI8815 - Jul 2, 02:45 UTCJul 2, 07:40 UTC4h 55m
2026-07-01 GTI8174 - Jul 1, 17:20 UTCJul 1, 21:25 UTC4h 5m
2026-07-01 GTI8174 - Jul 1, 07:40 UTCJul 1, 12:30 UTC4h 50m
2026-06-30 GTI8174 - Jun 30, 14:40 UTCJul 1, 05:30 UTC14h 50m
2026-06-30 GTI8173 - Jun 30, 04:10 UTCJun 30, 23:55 UTC19h 45m
2026-06-29 GTI8174 - Jun 29, 18:14 UTCJun 29, 21:19 UTC3h 5m
2026-06-29 GTI8174 - Jun 29, 15:00 UTCJun 29, 15:04 UTC5m
2026-06-29 GTI8174 - Jun 29, 08:14 UTCJun 29, 13:24 UTC5h 10m
2026-06-28 GTI8174 - Jun 28, 14:59 UTCJun 29, 05:45 UTC14h 45m
2026-06-28 GTI8173 - Jun 28, 04:35 UTCJun 29, 00:00 UTC19h 25m
2026-06-27 GTI8422 - Jun 27, 21:40 UTCJun 28, 02:29 UTC4h 50m
2026-06-27 GTI8998 - Jun 27, 09:04 UTCJun 27, 16:30 UTC7h 25m
2026-06-26 GTI8998 - Jun 26, 23:19 UTCJun 27, 06:40 UTC7h 20m
2026-06-26 GTI8997 - Jun 26, 07:20 UTCJun 26, 15:54 UTC8h 35m
2026-06-25 GTI8997 - Jun 25, 20:25 UTCJun 26, 04:34 UTC8h 10m
2026-06-21 GTI8998 - Jun 21, 23:24 UTCJun 22, 06:54 UTC7h 30m
2026-06-21 GTI8998 - Jun 21, 02:45 UTCJun 21, 21:05 UTC18h 20m
2026-06-20 GTI8998 - Jun 20, 21:34 UTCJun 21, 21:05 UTC23h 30m
2026-06-20 GTI8997 - Jun 20, 20:45 UTCJun 21, 19:29 UTC22h 45m
2026-06-20 GTI8997 - Jun 20, 10:15 UTCJun 20, 18:10 UTC7h 55m
2026-06-19 GTI8422 ANC → MIA Jun 19, 23:25 UTCJun 20, 06:35 UTC7h 10m
2026-06-19 GTI8422 ANC → MIA Jun 19, 08:09 UTCJun 19, 21:04 UTC12h 55m

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 N438GT page for operator, model, and routing details .

Mode-S A5417E frequently asked

What is Mode-S code A5417E?
A5417E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N438GT.
Where is Mode-S A5417E registered?
Mode-S code A5417E 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 A5417E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5417E, octal 51240576, decimal 10,830,206.
What flights does A5417E operate?
Mode-S A5417E has broadcast 20 distinct callsigns, including GTI8998, GTI8997, GTI8174, GTI8692, GTI8296.