Apparatus

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sensors Mode-S transponder

A57AD0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N452PA · BOEING 747-400 · operated by ATLAS AIR INC

Hex
A57AD0
Octal
51275320
Decimal
10,844,880
Country
US
Tail
N452PA
Type
B744
No current signal · last broadcast Jul 26, 19:30 UTC
Flights observed
212
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:30 UTC

Last known position

Most recent position reported by Mode-S A57AD0.

Country allocation

The ICAO 24-bit address A57AD0 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
GTI812 - 13 2026-07-11
GTI8523 Atlas Air 12 2026-04-20
GTI8174 Atlas Air 9 2026-06-07
GTI8120 - 9 2026-06-27
GTI8153 Atlas Air 8 2026-06-10
GTI8112 - 8 2026-04-15
GTI8603 - 7 2026-07-16
GTI8676 Atlas Air 6 2026-07-23
GTI8286 - 6 2026-07-09
GTI8193 Atlas Air 6 2026-05-16
GTI8117 Atlas Air 6 2026-07-26
GTI8811 Atlas Air 5 2026-04-23
GTI8422 Atlas Air 5 2026-04-17
GTI8817 Atlas Air 4 2026-04-25
GTI8560 Atlas Air 4 2026-05-08
GTI8328 Atlas Air 4 2026-05-28
GTI8292 Atlas Air 4 2026-05-23
GTI8243 Atlas Air 4 2026-04-13
GTI8173 Atlas Air 4 2026-06-06
GTI8818 Atlas Air 3 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GTI8117 ORD → ICN Jul 26, 18:55 UTCJul 26, 19:30 UTC35m
2026-07-25 GTI8007 HHN → BIF Jul 25, 17:10 UTCJul 26, 11:10 UTC18h 1m
2026-07-25 GTI8007 HHN → BIF Jul 25, 06:45 UTCJul 25, 13:55 UTC7h 10m
2026-07-25 GTI8519 HHN → PSM Jul 25, 00:40 UTCJul 25, 01:30 UTC50m
2026-07-24 GTI8519 HHN → PSM Jul 24, 14:00 UTCJul 24, 21:55 UTC7h 55m
2026-07-24 GTI8519 HHN → PSM Jul 24, 09:55 UTCJul 24, 10:25 UTC30m
2026-07-23 GTI5528 SNN → AMS Jul 23, 21:40 UTCJul 24, 06:00 UTC8h 20m
2026-07-23 GTI8540 - Jul 23, 09:25 UTCJul 23, 17:45 UTC8h 20m
2026-07-23 GTI8676 ANC → GDL Jul 23, 00:05 UTCJul 23, 06:15 UTC6h 10m
2026-07-19 GTI8676 ANC → GDL Jul 19, 08:25 UTCJul 19, 14:00 UTC5h 35m
2026-07-18 GTI8676 ANC → GDL Jul 18, 16:30 UTCJul 19, 06:30 UTC14h 0m
2026-07-18 GTI8081 JFK → COS Jul 18, 04:00 UTCJul 18, 13:50 UTC9h 50m
2026-07-17 CMB589 - Jul 17, 10:30 UTCJul 17, 20:29 UTC10h 0m
2026-07-17 GTI8081 JFK → COS Jul 17, 03:39 UTCJul 17, 06:54 UTC3h 15m
2026-07-16 GTI8603 ANC → JFK Jul 16, 18:25 UTCJul 17, 00:25 UTC6h 0m
2026-07-15 GTI8603 - Jul 15, 23:45 UTCJul 16, 16:09 UTC16h 25m
2026-07-15 GTI8603 - Jul 15, 18:05 UTCJul 16, 16:09 UTC22h 5m
2026-07-15 GTI8603 - Jul 15, 17:55 UTCJul 16, 16:00 UTC22h 5m
2026-07-15 GTI8602 JFK → ANC Jul 15, 08:35 UTCJul 15, 15:45 UTC7h 10m
2026-07-15 GTI8603 - Jul 15, 00:05 UTCJul 15, 05:55 UTC5h 50m
2026-07-14 GTI8603 - Jul 14, 13:45 UTCJul 14, 22:00 UTC8h 15m
2026-07-13 GTI8603 - Jul 13, 16:05 UTCJul 14, 15:25 UTC23h 20m
2026-07-13 GTI8602 - Jul 13, 08:55 UTCJul 13, 16:40 UTC7h 45m
2026-07-12 GTI8602 JFK → ANC Jul 12, 23:45 UTCJul 13, 06:35 UTC6h 50m
2026-07-11 GTI812 ANC → JFK Jul 11, 05:05 UTCJul 11, 11:20 UTC6h 15m
2026-07-10 GTI812 - Jul 10, 19:40 UTCJul 11, 03:10 UTC7h 30m
2026-07-09 GTI811 - Jul 9, 16:20 UTCJul 9, 17:00 UTC40m
2026-07-09 GTI8286 - Jul 9, 07:30 UTCJul 9, 08:00 UTC30m
2026-07-08 GTI8286 - Jul 8, 23:20 UTCJul 9, 06:45 UTC7h 25m
2026-07-08 GTI8286 - Jul 8, 20:00 UTCJul 8, 20:10 UTC10m
2026-07-08 GTI8286 - Jul 8, 15:05 UTCJul 8, 18:55 UTC3h 50m
2026-07-08 GTI8286 - Jul 8, 02:55 UTCJul 8, 12:20 UTC9h 25m
2026-07-07 GTI8286 - Jul 7, 18:45 UTCJul 7, 21:00 UTC2h 15m
2026-07-06 GTI8540 - Jul 6, 21:15 UTCJul 7, 05:30 UTC8h 15m
2026-07-06 GTI8676 - Jul 6, 12:20 UTCJul 6, 18:05 UTC5h 45m
2026-07-06 GTI8676 ANC → DFW Jul 6, 04:15 UTCJul 6, 09:50 UTC5h 35m
2026-07-05 GTI8676 ICN → ANC Jul 5, 12:30 UTCJul 6, 02:20 UTC13h 50m
2026-07-04 GTI9524 ORD → ICN Jul 4, 21:05 UTCJul 5, 10:25 UTC13h 20m
2026-07-04 GTI8091 - Jul 4, 15:50 UTCJul 4, 16:35 UTC45m
2026-07-04 GTI8091 CVG → CVG Jul 4, 01:45 UTCJul 4, 03:15 UTC1h 30m
2026-07-02 GTI8091 FRA → CVG Jul 2, 18:20 UTCJul 3, 04:15 UTC9h 55m
2026-07-02 GTI8092 ORD → FRA Jul 2, 06:15 UTCJul 2, 13:35 UTC7h 20m
2026-07-02 GTI812 YYZ → ORD Jul 2, 00:25 UTCJul 2, 01:30 UTC1h 5m
2026-07-01 GTI812 ANC → YYZ Jul 1, 13:05 UTCJul 1, 18:50 UTC5h 45m
2026-06-30 GTI812 ICN → ANC Jun 30, 21:00 UTCJul 1, 11:35 UTC14h 35m
2026-06-29 GTI811 - Jun 29, 22:00 UTCJun 30, 11:45 UTC13h 46m
2026-06-29 GTI812 ANC → YYZ Jun 29, 13:44 UTCJun 29, 19:24 UTC5h 40m
2026-06-28 GTI812 ICN → ANC Jun 28, 22:29 UTCJun 29, 11:55 UTC13h 25m
2026-06-27 GTI9057 ORD → ICN Jun 27, 12:34 UTCJun 28, 02:10 UTC13h 35m
2026-06-27 GTI8120 ANC → ORD Jun 27, 01:35 UTCJun 27, 06:50 UTC5h 15m

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 N452PA page for operator, model, and routing details .

Mode-S A57AD0 frequently asked

What is Mode-S code A57AD0?
A57AD0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N452PA.
Where is Mode-S A57AD0 registered?
Mode-S code A57AD0 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 A57AD0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A57AD0, octal 51275320, decimal 10,844,880.
What flights does A57AD0 operate?
Mode-S A57AD0 has broadcast 20 distinct callsigns, including GTI812, GTI8523, GTI8174, GTI8120, GTI8153.