Apparatus

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sensors Mode-S transponder

AA90A0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N780BA · BOEING 747-400LCF Dreamlifter · operated by BOEING AIRCRAFT HOLDING CO

Hex
AA90A0
Octal
52510240
Decimal
11,178,144
Country
US
Tail
N780BA
Type
BLCF
No current signal · last broadcast 13h ago
Flights observed
40
Distinct callsigns
5
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S AA90A0.

Country allocation

The ICAO 24-bit address AA90A0 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 5 distinct

Callsign Airline Flights Last seen
GTI4312 Atlas Air 12 2026-05-30
GTI4326 Atlas Air 9 2026-06-02
GTI4231 Atlas Air 7 2026-05-29
GTI4536 Atlas Air 6 2026-05-03
GTI4531 Atlas Air 6 2026-05-31

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-06-02 GTI4326 CHS → TAR Jun 2, 03:30 UTCJun 2, 11:55 UTC8h 25m
2026-05-31 GTI4531 ANC → CHS May 31, 15:20 UTCMay 31, 22:15 UTC6h 55m
2026-05-31 GTI4531 ANC → CHS May 31, 10:50 UTCMay 31, 12:45 UTC1h 55m
2026-05-30 GTI4312 ANC → NGO May 30, 17:45 UTCMay 31, 01:11 UTC7h 26m
2026-05-30 GTI4312 ANC → NGO May 30, 08:40 UTCMay 30, 15:25 UTC6h 45m
2026-05-29 GTI4231 TAR → CHS May 29, 09:10 UTCMay 29, 19:20 UTC10h 10m
2026-05-26 GTI4326 CHS → TAR May 26, 04:15 UTCMay 26, 13:50 UTC9h 35m
2026-05-25 GTI4531 ANC → CHS May 25, 16:25 UTCMay 25, 23:04 UTC6h 40m
2026-05-25 GTI4531 ANC → CHS May 25, 07:35 UTCMay 25, 14:30 UTC6h 55m
2026-05-19 GTI4312 ANC → NGO May 19, 04:40 UTCMay 19, 12:05 UTC7h 25m
2026-05-18 GTI4312 ANC → NGO May 18, 18:50 UTCMay 19, 02:10 UTC7h 20m
2026-05-15 GTI4231 TAR → CHS May 15, 08:05 UTCMay 15, 18:45 UTC10h 39m
2026-05-14 GTI4326 CHS → TAR May 14, 01:55 UTCMay 14, 11:01 UTC9h 5m
2026-05-12 GTI4531 ANC → CHS May 12, 13:51 UTCMay 12, 20:15 UTC6h 25m
2026-05-12 GTI4531 ANC → CHS May 12, 04:30 UTCMay 12, 11:20 UTC6h 50m
2026-05-07 GTI4312 ANC → NGO May 7, 18:45 UTCMay 8, 02:19 UTC7h 35m
2026-05-07 GTI4312 ANC → NGO May 7, 08:40 UTCMay 7, 16:05 UTC7h 25m
2026-05-06 GTI4231 TAR → CHS May 6, 07:35 UTCMay 6, 18:10 UTC10h 34m
2026-05-05 GTI4326 CHS → TAR May 5, 04:00 UTCMay 5, 13:10 UTC9h 10m
2026-05-03 GTI4536 ANC → CHS May 3, 18:45 UTCMay 4, 00:55 UTC6h 10m
2026-05-03 GTI4536 ANC → CHS May 3, 10:20 UTCMay 3, 16:50 UTC6h 30m
2026-05-01 GTI4312 ANC → NGO May 1, 18:55 UTCMay 2, 02:15 UTC7h 20m
2026-05-01 GTI4312 ANC → NGO May 1, 09:00 UTCMay 1, 16:40 UTC7h 39m
2026-04-30 GTI4536 ANC → CHS Apr 30, 15:40 UTCApr 30, 22:05 UTC6h 25m
2026-04-30 GTI4536 ANC → CHS Apr 30, 07:15 UTCApr 30, 13:40 UTC6h 25m
2026-04-27 GTI4312 ANC → NGO Apr 27, 19:25 UTCApr 28, 02:45 UTC7h 20m
2026-04-27 GTI4312 ANC → NGO Apr 27, 09:40 UTCApr 27, 17:05 UTC7h 25m
2026-04-24 GTI4536 ANC → CHS Apr 24, 19:35 UTCApr 25, 02:25 UTC6h 50m
2026-04-24 GTI4536 ANC → CHS Apr 24, 09:05 UTCApr 24, 15:30 UTC6h 25m
2026-04-23 GTI4312 ANC → NGO Apr 23, 19:30 UTCApr 24, 02:50 UTC7h 20m
2026-04-23 GTI4312 ANC → NGO Apr 23, 09:40 UTCApr 23, 17:00 UTC7h 20m
2026-04-22 GTI4231 TAR → CHS Apr 22, 07:50 UTCApr 22, 17:55 UTC10h 5m
2026-04-19 GTI4326 CHS → TAR Apr 19, 22:20 UTCApr 20, 07:30 UTC9h 10m
2026-04-17 GTI4231 TAR → CHS Apr 17, 17:25 UTCApr 17, 18:35 UTC1h 10m
2026-04-17 GTI4231 TAR → CHS Apr 17, 09:20 UTCApr 17, 10:50 UTC1h 30m
2026-04-17 GTI4231 TAR → CHS Apr 17, 07:40 UTCApr 17, 09:15 UTC1h 35m
2026-04-16 GTI4326 CHS → TAR Apr 16, 13:15 UTCApr 16, 14:05 UTC50m
2026-04-16 GTI4326 CHS → TAR Apr 16, 11:09 UTCApr 16, 13:05 UTC1h 55m
2026-04-16 GTI4326 CHS → TAR Apr 16, 05:09 UTCApr 16, 07:05 UTC1h 55m
2026-04-16 GTI4326 CHS → TAR Apr 16, 04:29 UTCApr 16, 05:05 UTC35m

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 N780BA page for operator, model, and routing details .

Mode-S AA90A0 frequently asked

What is Mode-S code AA90A0?
AA90A0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N780BA.
Where is Mode-S AA90A0 registered?
Mode-S code AA90A0 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 AA90A0 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA90A0, octal 52510240, decimal 11,178,144.
What flights does AA90A0 operate?
Mode-S AA90A0 has broadcast 5 distinct callsigns, including GTI4312, GTI4326, GTI4231, GTI4536, GTI4531.