Apparatus

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sensors Mode-S transponder

AA93C9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78060 · BOEING 767-400 · operated by UNITED AIRLINES INC

Hex
AA93C9
Octal
52511711
Decimal
11,178,953
Country
US
Tail
N78060
Type
B764
No current signal · last broadcast Jul 25, 20:25 UTC
Flights observed
279
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 20:25 UTC

Last known position

Most recent position reported by Mode-S AA93C9.

Country allocation

The ICAO 24-bit address AA93C9 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
UAL2143 United Airlines 30 2026-07-23
UAL1173 United Airlines 24 2026-07-23
UAL509 United Airlines 14 2026-07-24
UAL386 United Airlines 14 2026-07-25
UAL510 United Airlines 13 2026-07-24
UAL992 United Airlines 11 2026-04-27
UAL170 - 11 2026-07-11
UAL385 United Airlines 10 2026-07-24
UAL261 - 10 2026-07-14
UAL237 - 10 2026-07-08
UAL169 - 10 2026-07-11
UAL260 - 9 2026-07-16
UAL121 - 9 2026-06-23
UAL51 - 8 2026-07-13
UAL861 - 7 2026-07-02
UAL963 United Airlines 6 2026-07-19
UAL120 - 6 2026-06-22
UAL860 - 5 2026-07-03
UAL736 United Airlines 5 2026-06-20
UAL52 United Airlines 5 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 UAL386 DBV → EWR Jul 25, 10:35 UTCJul 25, 20:17 UTC9h 42m
2026-07-25 UAL386 DBV → EWR Jul 25, 10:35 UTCJul 25, 20:28 UTC9h 53m
2026-07-25 UAL386 DBV → EWR Jul 25, 11:30 UTCJul 25, 14:10 UTC2h 40m
2026-07-24 UAL385 EWR → DBV Jul 24, 23:50 UTCJul 25, 07:55 UTC8h 5m
2026-07-24 UAL509 DEN → SFO Jul 24, 11:30 UTCJul 24, 20:10 UTC8h 40m
2026-07-24 UAL510 EWR → FCO Jul 24, 00:30 UTCJul 24, 08:10 UTC7h 40m
2026-07-23 UAL1173 SJU → EWR Jul 23, 18:25 UTCJul 23, 21:45 UTC3h 20m
2026-07-23 UAL1173 SJU → EWR Jul 23, 18:23 UTCJul 23, 21:37 UTC3h 14m
2026-07-23 UAL2143 EWR → SJU Jul 23, 16:35 UTCJul 23, 16:55 UTC20m
2026-07-23 UAL2143 EWR → SJU Jul 23, 12:42 UTCJul 23, 16:51 UTC4h 9m
2026-07-23 UAL2143 EWR → SJU Jul 23, 12:55 UTCJul 23, 14:35 UTC1h 40m
2026-07-22 UAL386 DBV → EWR Jul 22, 11:10 UTCJul 22, 19:50 UTC8h 40m
2026-07-21 UAL385 EWR → DBV Jul 21, 23:50 UTCJul 22, 05:25 UTC5h 35m
2026-07-21 UAL509 - Jul 21, 12:15 UTCJul 21, 14:45 UTC2h 30m
2026-07-21 UAL509 FCO → EWR Jul 21, 11:22 UTCJul 21, 21:16 UTC9h 54m
2026-07-21 UAL510 EWR → FCO Jul 21, 01:26 UTCJul 21, 08:44 UTC7h 18m
2026-07-21 UAL510 EWR → FCO Jul 21, 01:10 UTCJul 21, 08:55 UTC7h 45m
2026-07-20 UAL941 LHR → EWR Jul 20, 15:40 UTCJul 20, 22:40 UTC7h 0m
2026-07-20 UAL940 EWR → LHR Jul 20, 02:35 UTCJul 20, 09:25 UTC6h 50m
2026-07-20 UAL940 EWR → LHR Jul 20, 01:51 UTCJul 20, 09:16 UTC7h 25m
2026-07-19 UAL963 BER → EWR Jul 19, 20:45 UTCJul 19, 21:40 UTC55m
2026-07-19 UAL963 BER → EWR Jul 19, 09:50 UTCJul 19, 18:50 UTC9h 0m
2026-07-18 UAL962 EWR → BER Jul 18, 23:28 UTCJul 19, 07:27 UTC7h 59m
2026-07-18 UAL962 EWR → BER Jul 18, 23:35 UTCJul 19, 07:10 UTC7h 35m
2026-07-18 UAL147 - Jul 18, 11:40 UTCJul 18, 12:50 UTC1h 10m
2026-07-18 UAL147 LHR → EWR Jul 18, 11:25 UTCJul 18, 18:56 UTC7h 31m
2026-07-18 UAL147 LHR → EWR Jul 18, 11:25 UTCJul 18, 18:56 UTC7h 31m
2026-07-18 UAL904 EWR → LHR Jul 18, 02:13 UTCJul 18, 08:47 UTC6h 34m
2026-07-18 UAL904 - Jul 18, 02:09 UTCJul 18, 08:15 UTC6h 6m
2026-07-17 UAL3907 - Jul 17, 15:49 UTCJul 17, 23:35 UTC7h 45m
2026-07-17 UAL3907 MAD → EWR Jul 17, 14:58 UTCJul 17, 23:41 UTC8h 43m
2026-07-16 UAL260 IAD → MAD Jul 16, 00:57 UTCJul 16, 07:46 UTC6h 49m
2026-07-16 UAL260 - Jul 16, 00:45 UTCJul 16, 07:50 UTC7h 5m
2026-07-14 UAL261 - Jul 14, 09:40 UTCJul 14, 17:20 UTC7h 40m
2026-07-13 UAL51 - Jul 13, 23:50 UTCJul 14, 07:00 UTC7h 10m
2026-07-13 UAL386 DBV → EWR Jul 13, 10:35 UTCJul 13, 19:37 UTC9h 2m
2026-07-13 UAL386 DBV → EWR Jul 13, 10:30 UTCJul 13, 19:40 UTC9h 10m
2026-07-12 UAL385 EWR → DBV Jul 12, 23:45 UTCJul 13, 07:39 UTC7h 54m
2026-07-12 UAL385 EWR → DBV Jul 12, 23:25 UTCJul 13, 07:45 UTC8h 20m
2026-07-12 UAL509 - Jul 12, 11:40 UTCJul 12, 20:10 UTC8h 30m
2026-07-12 UAL509 FCO → EWR Jul 12, 11:22 UTCJul 12, 20:15 UTC8h 53m
2026-07-12 UAL510 - Jul 12, 01:05 UTCJul 12, 02:35 UTC1h 30m
2026-07-12 UAL510 EWR → FCO Jul 12, 00:46 UTCJul 12, 08:50 UTC8h 4m
2026-07-11 UAL169 - Jul 11, 12:05 UTCJul 11, 20:40 UTC8h 35m
2026-07-11 UAL170 - Jul 11, 01:25 UTCJul 11, 09:00 UTC7h 35m
2026-07-08 UAL237 - Jul 8, 08:50 UTCJul 8, 16:45 UTC7h 55m
2026-07-08 UAL237 PMI → EWR Jul 8, 08:38 UTCJul 8, 16:45 UTC8h 7m
2026-07-07 UAL236 EWR → PMI Jul 7, 20:50 UTCJul 8, 04:05 UTC7h 15m
2026-07-07 UAL236 - Jul 7, 20:50 UTCJul 8, 02:15 UTC5h 25m
2026-07-07 UAL237 - Jul 7, 08:25 UTCJul 7, 16:25 UTC8h 0m

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 N78060 page for operator, model, and routing details .

Mode-S AA93C9 frequently asked

What is Mode-S code AA93C9?
AA93C9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78060.
Where is Mode-S AA93C9 registered?
Mode-S code AA93C9 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 AA93C9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 20:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA93C9, octal 52511711, decimal 11,178,953.
What flights does AA93C9 operate?
Mode-S AA93C9 has broadcast 20 distinct callsigns, including UAL2143, UAL1173, UAL509, UAL386, UAL510.