sensors Mode-S transponder

A4C79B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N407KZ · BOEING 747-400 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A4C79B
Octal
51143633
Decimal
10,799,003
Country
US
Tail
N407KZ
Type
B744
No current signal · last broadcast 8h ago
Flights observed
111
Distinct callsigns
19
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A4C79B.

Country allocation

The ICAO 24-bit address A4C79B 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 19 distinct

Callsign Airline Flights Last seen
GTI7134 Atlas Air 22 2026-05-28
GTI7172 Atlas Air 19 2026-05-22
GTI7143 Atlas Air 14 2026-05-29
GTI7171 Atlas Air 13 2026-05-22
GTI7132 Atlas Air 11 2026-05-27
GTI7141 Atlas Air 7 2026-05-27
GTI7155 - 3 2026-04-13
GTI7146 Atlas Air 3 2026-04-13
GTI512 Atlas Air 3 2026-05-25
GTI7244 Atlas Air 2 2026-05-04
GTI7138 Atlas Air 2 2026-05-19
GTI7108 Atlas Air 2 2026-05-18
GTI7106 Atlas Air 2 2026-04-30
GTI7103 Atlas Air 2 2026-05-01
GTI7101 Atlas Air 2 2026-05-18
GTI9012 Atlas Air 1 2026-05-25
GTI9003 Atlas Air 1 2026-05-23
GTI7243 Atlas Air 1 2026-05-03
GTI7147 Atlas Air 1 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 GTI7143 ORD → NRT May 29, 09:05 UTCMay 29, 21:20 UTC12h 15m
2026-05-28 GTI7134 ANC → ORD May 28, 21:55 UTCMay 29, 03:20 UTC5h 25m
2026-05-28 GTI7134 ANC → ORD May 28, 13:35 UTCMay 28, 19:45 UTC6h 10m
2026-05-27 GTI7141 ORD → NRT May 27, 20:10 UTCMay 28, 08:45 UTC12h 35m
2026-05-27 GTI7132 ANC → ORD May 27, 11:20 UTCMay 27, 16:30 UTC5h 10m
2026-05-27 GTI7132 ANC → ORD May 27, 03:04 UTCMay 27, 09:30 UTC6h 25m
2026-05-25 GTI9012 MIA → ORD May 25, 10:10 UTCMay 25, 21:19 UTC11h 9m
2026-05-25 GTI512 ANC → ORD May 25, 06:30 UTCMay 25, 07:40 UTC1h 10m
2026-05-24 GTI512 ANC → ORD May 24, 18:45 UTCMay 24, 23:46 UTC5h 1m
2026-05-24 GTI512 ANC → ORD May 24, 03:55 UTCMay 24, 16:50 UTC12h 55m
2026-05-23 GTI9003 MST → ICN May 23, 22:45 UTCMay 24, 00:50 UTC2h 5m
2026-05-22 GTI7171 DFW → NRT May 22, 23:50 UTCMay 23, 12:25 UTC12h 35m
2026-05-22 GTI7172 ANC → DFW May 22, 15:55 UTCMay 22, 21:25 UTC5h 30m
2026-05-22 GTI7172 ANC → DFW May 22, 07:20 UTCMay 22, 13:25 UTC6h 4m
2026-05-21 GTI7143 ORD → NRT May 21, 16:15 UTCMay 22, 04:40 UTC12h 25m
2026-05-21 GTI7134 ANC → ORD May 21, 08:05 UTCMay 21, 13:25 UTC5h 20m
2026-05-20 GTI7134 ANC → ORD May 20, 23:35 UTCMay 21, 05:55 UTC6h 20m
2026-05-19 GTI7147 ORD → HND May 19, 22:35 UTCMay 20, 10:35 UTC12h 1m
2026-05-19 GTI7138 ANC → ORD May 19, 12:05 UTCMay 19, 17:25 UTC5h 20m
2026-05-19 GTI7138 ANC → ORD May 19, 03:35 UTCMay 19, 09:45 UTC6h 10m
2026-05-18 GTI7101 LAX → NRT May 18, 12:15 UTCMay 18, 23:35 UTC11h 19m
2026-05-18 GTI7108 NRT → LAX May 18, 00:00 UTCMay 18, 08:55 UTC8h 55m
2026-05-16 GTI7171 DFW → NRT May 16, 20:40 UTCMay 17, 09:25 UTC12h 45m
2026-05-16 GTI7172 ANC → DFW May 16, 12:01 UTCMay 16, 17:35 UTC5h 35m
2026-05-16 GTI7172 ANC → DFW May 16, 04:10 UTCMay 16, 10:25 UTC6h 16m
2026-05-15 GTI7143 ORD → NRT May 15, 09:05 UTCMay 15, 21:10 UTC12h 4m
2026-05-14 GTI7134 ANC → ORD May 14, 21:35 UTCMay 15, 03:05 UTC5h 30m
2026-05-14 GTI7134 ANC → ORD May 14, 13:25 UTCMay 14, 19:45 UTC6h 20m
2026-05-13 GTI7141 ORD → NRT May 13, 20:40 UTCMay 14, 08:55 UTC12h 15m
2026-05-13 GTI7132 ANC → ORD May 13, 11:50 UTCMay 13, 17:05 UTC5h 15m
2026-05-13 GTI7132 ANC → ORD May 13, 03:10 UTCMay 13, 09:15 UTC6h 5m
2026-05-12 GTI7143 ORD → NRT May 12, 08:15 UTCMay 12, 21:05 UTC12h 50m
2026-05-11 GTI7134 ANC → ORD May 11, 21:45 UTCMay 11, 22:35 UTC49m
2026-05-11 GTI7134 ANC → ORD May 11, 13:25 UTCMay 11, 19:55 UTC6h 30m
2026-05-10 GTI7171 DFW → NRT May 10, 08:10 UTCMay 10, 21:19 UTC13h 10m
2026-05-09 GTI7172 ANC → DFW May 9, 21:00 UTCMay 10, 02:30 UTC5h 30m
2026-05-09 GTI7172 ANC → DFW May 9, 13:00 UTCMay 9, 18:50 UTC5h 50m
2026-05-08 GTI7171 DFW → NRT May 8, 21:15 UTCMay 9, 10:20 UTC13h 5m
2026-05-08 GTI7172 ANC → DFW May 8, 12:39 UTCMay 8, 18:00 UTC5h 21m
2026-05-08 GTI7172 ANC → DFW May 8, 04:09 UTCMay 8, 10:09 UTC6h 0m
2026-05-04 GTI7101 LAX → NRT May 4, 17:35 UTCMay 5, 04:35 UTC11h 1m
2026-05-04 GTI7108 NRT → LAX May 4, 04:50 UTCMay 4, 14:20 UTC9h 30m
2026-05-04 GTI7244 TPE → NRT May 4, 00:55 UTCMay 4, 02:04 UTC1h 10m
2026-05-03 GTI7244 TPE → NRT May 3, 23:35 UTCMay 3, 23:45 UTC10m
2026-05-03 GTI7243 NRT → TPE May 3, 07:35 UTCMay 3, 10:50 UTC3h 15m
2026-05-02 GTI7143 ORD → NRT May 2, 15:40 UTCMay 3, 04:30 UTC12h 49m
2026-05-02 GTI7134 ANC → ORD May 2, 06:55 UTCMay 2, 12:00 UTC5h 5m
2026-05-01 GTI7134 ANC → ORD May 1, 22:35 UTCMay 2, 04:45 UTC6h 10m
2026-05-01 GTI7103 LAX → NRT May 1, 01:55 UTCMay 1, 13:05 UTC11h 10m
2026-04-30 GTI7106 NRT → LAX Apr 30, 13:55 UTCApr 30, 23:05 UTC9h 10m

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 N407KZ page for operator, model, and routing details .

Mode-S A4C79B frequently asked

What is Mode-S code A4C79B?
A4C79B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N407KZ.
Where is Mode-S A4C79B registered?
Mode-S code A4C79B 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 A4C79B 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 A4C79B, octal 51143633, decimal 10,799,003.
What flights does A4C79B operate?
Mode-S A4C79B has broadcast 19 distinct callsigns, including GTI7134, GTI7172, GTI7143, GTI7171, GTI7132.