Apparatus

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sensors Mode-S transponder

AA9300

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78009 · BOEING 777-200 · operated by UNITED AIRLINES INC

Hex
AA9300
Octal
52511400
Decimal
11,178,752
Country
US
Tail
N78009
Type
B772
Broadcasting now · callsign UAL57 · 38,000 ft
Flights observed
98
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Current position

AA9300 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA9300 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
UAL984 United Airlines 4 2026-04-21
UAL948 United Airlines 4 2026-05-14
UAL880 United Airlines 4 2026-05-12
UAL875 United Airlines 4 2026-05-27
UAL55 United Airlines 4 2026-06-02
UAL949 United Airlines 3 2026-05-15
UAL927 United Airlines 3 2026-05-16
UAL926 United Airlines 3 2026-05-16
UAL919 United Airlines 3 2026-05-29
UAL803 United Airlines 3 2026-05-30
UAL57 United Airlines 3 2026-06-02
UAL54 United Airlines 3 2026-06-02
UAL195 United Airlines 3 2026-05-22
UAL194 United Airlines 3 2026-05-09
UAL942 United Airlines 2 2026-05-07
UAL932 United Airlines 2 2026-04-25
UAL916 United Airlines 2 2026-05-25
UAL885 United Airlines 2 2026-05-30
UAL884 United Airlines 2 2026-05-29
UAL879 United Airlines 2 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 UAL57 EWR → CDG Jun 2, 22:20 UTCJun 2, 23:10 UTC50m
2026-06-02 UAL55 CDG → EWR Jun 2, 12:00 UTCJun 2, 19:05 UTC7h 5m
2026-06-02 UAL54 EWR → CDG Jun 2, 01:55 UTCJun 2, 08:25 UTC6h 30m
2026-06-01 UAL55 CDG → EWR Jun 1, 17:15 UTCJun 1, 18:50 UTC1h 35m
2026-06-01 UAL55 CDG → EWR Jun 1, 11:25 UTCJun 1, 17:10 UTC5h 45m
2026-06-01 UAL55 CDG → EWR Jun 1, 11:34 UTCJun 1, 18:50 UTC7h 16m
2026-06-01 UAL54 EWR → CDG Jun 1, 02:05 UTCJun 1, 08:45 UTC6h 40m
2026-06-01 UAL54 EWR → CDG Jun 1, 02:04 UTCJun 1, 08:43 UTC6h 39m
2026-05-31 UAL130 HND → EWR May 31, 11:20 UTCMay 31, 23:35 UTC12h 15m
2026-05-30 UAL803 IAD → HND May 30, 19:55 UTCMay 31, 09:05 UTC13h 10m
2026-05-30 UAL885 FCO → IAD May 30, 08:40 UTCMay 30, 11:40 UTC3h 0m
2026-05-30 UAL885 FCO → IAD May 30, 08:47 UTCMay 30, 17:27 UTC8h 40m
2026-05-29 UAL884 IAD → FCO May 29, 21:58 UTCMay 30, 06:09 UTC8h 11m
2026-05-29 UAL884 IAD → FCO May 29, 22:00 UTCMay 30, 06:10 UTC8h 10m
2026-05-29 UAL919 LHR → IAD May 29, 11:45 UTCMay 29, 19:05 UTC7h 20m
2026-05-29 UAL919 LHR → IAD May 29, 11:40 UTCMay 29, 19:01 UTC7h 21m
2026-05-28 UAL918 IAD → LHR May 28, 22:50 UTCMay 29, 05:30 UTC6h 40m
2026-05-28 UAL804 HND → IAD May 28, 07:10 UTCMay 28, 14:40 UTC7h 30m
2026-05-28 UAL804 HND → IAD May 28, 07:10 UTCMay 28, 19:23 UTC12h 13m
2026-05-27 UAL875 SFO → HND May 27, 18:30 UTCMay 28, 05:00 UTC10h 30m
2026-05-27 UAL875 SFO → HND May 27, 18:25 UTCMay 28, 04:56 UTC10h 31m
2026-05-26 UAL876 HND → SFO May 26, 07:19 UTCMay 26, 16:40 UTC9h 20m
2026-05-25 UAL875 SFO → HND May 25, 18:25 UTCMay 26, 04:41 UTC10h 16m
2026-05-25 UAL875 SFO → HND May 25, 18:30 UTCMay 26, 04:45 UTC10h 15m
2026-05-25 UAL916 AKL → SFO May 25, 03:51 UTCMay 25, 15:41 UTC11h 50m
2026-05-25 UAL916 AKL → SFO May 25, 04:15 UTCMay 25, 15:30 UTC11h 15m
2026-05-24 UAL917 SFO → AKL May 24, 06:40 UTCMay 24, 19:25 UTC12h 45m
2026-05-23 UAL506 MSN → DEN May 23, 14:10 UTCMay 23, 18:00 UTC3h 50m
2026-05-23 UAL506 MSN → DEN May 23, 14:07 UTCMay 24, 02:28 UTC12h 21m
2026-05-23 UAL507 DEN → LGA May 23, 00:15 UTCMay 23, 11:35 UTC11h 19m
2026-05-22 UAL195 MUC → SFO May 22, 10:00 UTCMay 22, 21:10 UTC11h 10m
2026-05-21 UAL102 IAH → MUC May 21, 22:05 UTCMay 22, 07:10 UTC9h 5m
2026-05-19 UAL879 LHR → IAH May 19, 09:30 UTCMay 19, 19:10 UTC9h 40m
2026-05-18 UAL14 EWR → LHR May 18, 23:35 UTCMay 19, 05:55 UTC6h 20m
2026-05-17 UAL435T SBA → SFO May 17, 16:09 UTCMay 17, 20:53 UTC4h 44m
2026-05-17 UAL435T SBA → SFO May 17, 16:20 UTCMay 17, 20:55 UTC4h 35m
2026-05-16 UAL927 FRA → SFO May 16, 15:51 UTCMay 17, 02:35 UTC10h 44m
2026-05-16 UAL927 FRA → SFO May 16, 15:55 UTCMay 16, 17:40 UTC1h 45m
2026-05-16 UAL926 SFO → FRA May 16, 02:35 UTCMay 16, 12:31 UTC9h 56m
2026-05-15 UAL949 LHR → SFO May 15, 12:25 UTCMay 15, 22:25 UTC10h 0m
2026-05-15 UAL949 LHR → SFO May 15, 12:05 UTCMay 15, 22:30 UTC10h 24m
2026-05-14 UAL948 SFO → LHR May 14, 23:59 UTCMay 15, 09:31 UTC9h 32m
2026-05-14 UAL948 SFO → LHR May 14, 23:50 UTCMay 15, 09:35 UTC9h 45m
2026-05-14 UAL195 MUC → SFO May 14, 10:05 UTCMay 14, 12:05 UTC2h 0m
2026-05-14 UAL195 MUC → SFO May 14, 10:02 UTCMay 14, 21:15 UTC11h 13m
2026-05-13 UAL102 IAH → MUC May 13, 22:00 UTCMay 14, 08:00 UTC10h 0m
2026-05-13 UAL879 LHR → IAH May 13, 09:40 UTCMay 13, 19:10 UTC9h 30m
2026-05-12 UAL880 IAH → LHR May 12, 21:45 UTCMay 13, 06:55 UTC9h 10m
2026-05-12 UAL880 IAH → LHR May 12, 21:47 UTCMay 13, 06:46 UTC8h 59m
2026-05-12 UAL818 EZE → IAH May 12, 03:50 UTCMay 12, 04:00 UTC10m

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 N78009 page for operator, model, and routing details .

Mode-S AA9300 frequently asked

What is Mode-S code AA9300?
AA9300 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78009.
Where is Mode-S AA9300 registered?
Mode-S code AA9300 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 AA9300 broadcasting right now?
Yes. Mode-S AA9300 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA9300, octal 52511400, decimal 11,178,752.
What flights does AA9300 operate?
Mode-S AA9300 has broadcast 20 distinct callsigns, including UAL984, UAL948, UAL880, UAL875, UAL55.