Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 2h ago
Flights observed
245
Distinct callsigns
20
Country
US
Last broadcast
2h ago

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 - 27 2026-07-05
UAL1173 United Airlines 22 2026-07-05
UAL992 United Airlines 11 2026-04-27
UAL509 - 11 2026-07-12
UAL170 - 11 2026-07-11
UAL510 - 10 2026-07-12
UAL386 - 10 2026-07-13
UAL237 - 10 2026-07-08
UAL169 - 10 2026-07-11
UAL261 - 9 2026-06-28
UAL121 - 9 2026-06-23
UAL51 - 8 2026-07-13
UAL385 - 8 2026-07-12
UAL861 - 7 2026-07-02
UAL260 United Airlines 7 2026-06-17
UAL120 - 6 2026-06-22
UAL860 - 5 2026-07-03
UAL736 United Airlines 5 2026-06-20
UAL52 United Airlines 5 2026-04-23
UAL50 - 5 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-06 UAL236 - Jul 6, 20:35 UTCJul 7, 03:55 UTC7h 20m
2026-07-05 UAL1173 SJU → EWR Jul 5, 20:05 UTCJul 5, 21:10 UTC1h 5m
2026-07-05 UAL1173 SJU → EWR Jul 5, 17:40 UTCJul 5, 17:50 UTC10m
2026-07-05 UAL2143 - Jul 5, 15:20 UTCJul 5, 15:45 UTC25m
2026-07-05 UAL2143 - Jul 5, 12:25 UTCJul 5, 13:10 UTC45m
2026-07-04 UAL1173 SJU → EWR Jul 4, 21:05 UTCJul 5, 00:30 UTC3h 25m
2026-07-04 UAL2143 - Jul 4, 19:15 UTCJul 4, 19:40 UTC25m
2026-07-04 UAL2143 - Jul 4, 16:20 UTCJul 4, 17:00 UTC40m
2026-07-04 UAL3939 IAD → EWR Jul 4, 04:40 UTCJul 4, 05:25 UTC45m
2026-07-04 UAL3939 IAD → EWR Jul 4, 03:47 UTCJul 4, 05:23 UTC1h 36m
2026-07-03 UAL860 - Jul 3, 01:55 UTCJul 3, 10:45 UTC8h 50m
2026-07-02 UAL861 - Jul 2, 05:00 UTCJul 2, 13:55 UTC8h 55m
2026-07-01 UAL127 - Jul 1, 14:05 UTCJul 1, 23:25 UTC9h 20m
2026-07-01 UAL126 - Jul 1, 04:05 UTCJul 1, 11:55 UTC7h 50m
2026-06-28 UAL261 MAD → IAD Jun 28, 10:50 UTCJun 28, 19:09 UTC8h 20m
2026-06-28 UAL51 - Jun 28, 02:10 UTCJun 28, 08:25 UTC6h 15m
2026-06-27 UAL1173 SJU → EWR Jun 27, 21:10 UTCJun 27, 23:45 UTC2h 35m
2026-06-27 UAL1173 SJU → EWR Jun 27, 19:29 UTCJun 27, 19:39 UTC10m
2026-06-27 UAL1173 SJU → EWR Jun 27, 19:44 UTCJun 27, 23:46 UTC4h 2m
2026-06-27 UAL2143 - Jun 27, 15:34 UTCJun 27, 15:55 UTC20m
2026-06-27 UAL2143 EWR → SJU Jun 27, 12:27 UTCJun 27, 15:52 UTC3h 25m
2026-06-27 UAL2143 - Jun 27, 12:25 UTCJun 27, 13:20 UTC55m
2026-06-25 UAL1173 SJU → EWR Jun 25, 20:09 UTCJun 25, 20:59 UTC50m
2026-06-25 UAL1173 SJU → EWR Jun 25, 17:34 UTCJun 25, 17:49 UTC15m
2026-06-25 UAL2143 - Jun 25, 15:10 UTCJun 25, 15:29 UTC20m
2026-06-25 UAL2143 - Jun 25, 12:15 UTCJun 25, 12:50 UTC35m
2026-06-24 UAL509 DEN → SFO Jun 24, 11:29 UTCJun 24, 14:04 UTC2h 35m
2026-06-24 UAL509 DEN → SFO Jun 24, 11:22 UTCJun 24, 20:35 UTC9h 13m
2026-06-24 UAL510 EWR → FCO Jun 24, 01:09 UTCJun 24, 08:55 UTC7h 45m
2026-06-23 UAL121 BCN → EWR Jun 23, 10:22 UTCJun 23, 18:46 UTC8h 24m
2026-06-23 UAL121 - Jun 23, 10:24 UTCJun 23, 12:05 UTC1h 40m
2026-06-22 UAL120 EWR → BCN Jun 22, 23:29 UTCJun 23, 06:40 UTC7h 11m
2026-06-22 UAL120 - Jun 22, 23:29 UTCJun 23, 06:15 UTC6h 45m
2026-06-22 UAL386 DBV → EWR Jun 22, 10:35 UTCJun 22, 19:48 UTC9h 13m

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 2h ago.
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, UAL992, UAL509, UAL170.