Apparatus

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sensors Mode-S transponder

A98423

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N712GT · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A98423
Octal
52302043
Decimal
11,109,411
Country
US
Tail
N712GT
Type
B77L
No current signal · last broadcast Jul 26, 20:05 UTC
Flights observed
200
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:05 UTC

Last known position

Most recent position reported by Mode-S A98423.

Country allocation

The ICAO 24-bit address A98423 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
GTI8508 - 24 2026-06-01
GTI8007 Atlas Air 24 2026-05-29
GTI8321 Atlas Air 23 2026-07-21
GTI8008 Atlas Air 19 2026-05-29
GTI792 Atlas Air 17 2026-07-26
GTI8507 - 16 2026-05-30
GTI606 Atlas Air 16 2026-05-28
GTI791 Atlas Air 14 2026-07-26
GTI867 - 7 2026-06-27
GTI863 Atlas Air 7 2026-07-19
GTI8319 Atlas Air 6 2026-07-21
GTI866 - 4 2026-06-26
GTI862 Atlas Air 4 2026-07-18
GTI8320 Atlas Air 4 2026-07-20
GTI8318 - 4 2026-06-30
GTI8509 Atlas Air 2 2026-06-02
SHARPAVI - 1 2026-06-10
GTI9602 Atlas Air 1 2026-04-29
GTI8806 - 1 2026-07-08
GTI8804 - 1 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 GTI791 ICN → PVG Jul 26, 12:40 UTCJul 26, 20:05 UTC7h 25m
2026-07-26 GTI792 PVG → ANC Jul 26, 04:30 UTCJul 26, 09:35 UTC5h 6m
2026-07-25 GTI792 PVG → ANC Jul 25, 14:00 UTCJul 26, 02:50 UTC12h 50m
2026-07-21 GTI8319 HHN → ELP Jul 21, 18:35 UTCJul 21, 22:35 UTC4h 0m
2026-07-21 GTI8321 HHN → POB Jul 21, 06:20 UTCJul 21, 14:40 UTC8h 20m
2026-07-20 GTI8321 HHN → POB Jul 20, 13:40 UTCJul 20, 21:55 UTC8h 15m
2026-07-20 GTI8320 PSM → HHN Jul 20, 06:40 UTCJul 20, 07:05 UTC25m
2026-07-19 GTI8320 PSM → HHN Jul 19, 21:50 UTCJul 20, 05:20 UTC7h 30m
2026-07-19 GTI863 PVG → GYD Jul 19, 04:05 UTCJul 19, 18:20 UTC14h 15m
2026-07-18 GTI863 PVG → GYD Jul 18, 18:25 UTCJul 19, 16:45 UTC22h 20m
2026-07-18 GTI862 HSV → LUX Jul 18, 09:10 UTCJul 19, 04:20 UTC19h 10m
2026-07-17 GTI791 - Jul 17, 22:25 UTCJul 18, 06:20 UTC7h 56m
2026-07-17 GTI792 PVG → ANC Jul 17, 15:25 UTCJul 17, 19:25 UTC4h 0m
2026-07-17 GTI792 PVG → ANC Jul 17, 14:30 UTCJul 17, 15:15 UTC45m
2026-07-16 GTI792 PVG → ANC Jul 16, 22:35 UTCJul 17, 12:40 UTC14h 5m
2026-07-14 GTI791 - Jul 14, 09:20 UTCJul 14, 23:25 UTC14h 4m
2026-07-13 GTI8321 - Jul 13, 21:20 UTCJul 14, 05:20 UTC8h 0m
2026-07-13 GTI8321 - Jul 13, 03:01 UTCJul 13, 19:05 UTC16h 5m
2026-07-12 GTI8321 - Jul 12, 23:25 UTCJul 13, 19:05 UTC19h 40m
2026-07-12 GTI8321 - Jul 12, 20:50 UTCJul 13, 19:05 UTC22h 15m
2026-07-12 GTI8321 - Jul 12, 19:35 UTCJul 13, 18:45 UTC23h 10m
2026-07-12 GTI863 - Jul 12, 08:10 UTCJul 12, 16:25 UTC8h 15m
2026-07-11 GTI862 - Jul 11, 18:35 UTCJul 12, 03:20 UTC8h 45m
2026-07-11 GTI791 - Jul 11, 01:20 UTCJul 11, 09:00 UTC7h 40m
2026-07-10 GTI792 - Jul 10, 13:05 UTCJul 10, 18:15 UTC5h 10m
2026-07-09 GTI792 ICN → ANC Jul 9, 18:40 UTCJul 10, 11:25 UTC16h 45m
2026-07-09 GTI8319 - Jul 9, 01:00 UTCJul 9, 16:10 UTC15h 10m
2026-07-08 GTI8806 - Jul 8, 12:50 UTCJul 8, 21:50 UTC9h 0m
2026-07-07 GTI8804 - Jul 7, 09:10 UTCJul 7, 17:05 UTC7h 55m
2026-07-06 GTI8321 - Jul 6, 21:40 UTCJul 7, 06:05 UTC8h 25m
2026-07-06 GTI8321 - Jul 6, 02:50 UTCJul 6, 19:20 UTC16h 30m
2026-07-05 GTI8321 - Jul 5, 23:45 UTCJul 6, 19:20 UTC19h 35m
2026-07-05 GTI8321 - Jul 5, 20:50 UTCJul 6, 19:20 UTC22h 30m
2026-07-05 GTI8321 - Jul 5, 20:05 UTCJul 6, 18:45 UTC22h 40m
2026-07-05 GTI863 - Jul 5, 03:25 UTCJul 5, 17:30 UTC14h 5m
2026-07-04 GTI863 - Jul 4, 18:05 UTCJul 5, 16:45 UTC22h 40m
2026-07-04 GTI863 - Jul 4, 14:50 UTCJul 5, 14:15 UTC23h 25m
2026-07-04 GTI862 - Jul 4, 12:50 UTCJul 5, 07:25 UTC18h 35m
2026-07-04 GTI862 - Jul 4, 11:45 UTCJul 5, 07:25 UTC19h 40m
2026-07-03 GTI791 ICN → PVG Jul 3, 23:45 UTCJul 4, 07:15 UTC7h 30m
2026-07-03 GTI792 PVG → ANC Jul 3, 08:40 UTCJul 3, 13:55 UTC5h 15m
2026-07-02 GTI792 PVG → ANC Jul 2, 16:35 UTCJul 3, 06:20 UTC13h 45m
2026-07-01 GTI791 ICN → PVG Jul 1, 05:25 UTCJul 1, 13:45 UTC8h 20m
2026-06-30 GTI791 ICN → PVG Jun 30, 21:50 UTCJul 1, 03:25 UTC5h 35m
2026-06-30 GTI8318 - Jun 30, 10:25 UTCJun 30, 18:45 UTC8h 20m
2026-06-29 GTI8321 - Jun 29, 10:50 UTCJun 30, 05:50 UTC19h 1m
2026-06-29 GTI8321 - Jun 29, 08:50 UTCJun 30, 05:50 UTC21h 1m
2026-06-29 GTI8320 PSM → HHN Jun 29, 06:54 UTCJun 30, 05:50 UTC22h 56m
2026-06-27 GTI867 - Jun 27, 16:49 UTCJun 28, 14:04 UTC21h 15m
2026-06-27 GTI867 ICN → LUX Jun 27, 16:10 UTCJun 28, 14:04 UTC21h 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 N712GT page for operator, model, and routing details .

Mode-S A98423 frequently asked

What is Mode-S code A98423?
A98423 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N712GT.
Where is Mode-S A98423 registered?
Mode-S code A98423 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 A98423 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A98423, octal 52302043, decimal 11,109,411.
What flights does A98423 operate?
Mode-S A98423 has broadcast 20 distinct callsigns, including GTI8508, GTI8007, GTI8321, GTI8008, GTI792.