Apparatus

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sensors Mode-S transponder

AA92FA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78003 · BOEING 777-200 · operated by UNITED AIRLINES INC

Hex
AA92FA
Octal
52511372
Decimal
11,178,746
Country
US
Tail
N78003
Type
B772
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
252
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AA92FA.

Country allocation

The ICAO 24-bit address AA92FA 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
UAL875 United Airlines 16 2026-07-22
UAL852 - 12 2026-07-06
UAL853 - 9 2026-07-05
UAL804 United Airlines 9 2026-07-23
UAL131 - 9 2026-07-15
UAL932 - 8 2026-06-17
UAL990 - 7 2026-07-09
UAL927 - 7 2026-07-08
UAL47 - 7 2026-07-01
UAL914 - 6 2026-07-10
UAL506 - 6 2026-07-04
UAL45 - 6 2026-07-07
UAL44 - 6 2026-07-06
UAL900 United Airlines 5 2026-04-23
UAL884 - 5 2026-07-10
UAL876 United Airlines 5 2026-05-05
UAL56 - 5 2026-07-12
UAL195 United Airlines 5 2026-07-03
UAL885 - 4 2026-07-11
UAL819 - 4 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2328 ORD → SFO Jul 26, 19:15 UTCJul 26, 22:30 UTC3h 15m
2026-07-26 UAL22 DUB → EWR Jul 26, 09:10 UTCJul 26, 10:00 UTC50m
2026-07-26 UAL22 DUB → EWR Jul 26, 09:05 UTCJul 26, 15:51 UTC6h 46m
2026-07-26 UAL22 DUB → EWR Jul 26, 09:05 UTCJul 26, 15:56 UTC6h 51m
2026-07-26 UAL23 EWR → DUB Jul 26, 00:30 UTCJul 26, 06:20 UTC5h 50m
2026-07-26 UAL23 EWR → DUB Jul 26, 00:28 UTCJul 26, 06:09 UTC5h 41m
2026-07-25 UAL130 HND → EWR Jul 25, 09:30 UTCJul 25, 21:40 UTC12h 10m
2026-07-24 UAL803 IAD → HND Jul 24, 17:20 UTCJul 25, 07:06 UTC13h 46m
2026-07-24 UAL803 IAD → HND Jul 24, 17:30 UTCJul 25, 07:10 UTC13h 40m
2026-07-23 UAL804 HND → IAD Jul 23, 17:55 UTCJul 23, 19:05 UTC1h 10m
2026-07-23 UAL804 HND → IAD Jul 23, 07:20 UTCJul 23, 17:50 UTC10h 30m
2026-07-22 UAL875 SFO → HND Jul 22, 18:30 UTCJul 23, 04:30 UTC10h 0m
2026-07-22 UAL858 ICN → SFO Jul 22, 14:45 UTCJul 22, 15:45 UTC1h 0m
2026-07-20 UAL857 ICN → PVG Jul 20, 23:42 UTCJul 21, 11:15 UTC11h 33m
2026-07-20 UAL857 ICN → PVG Jul 20, 23:40 UTCJul 21, 10:30 UTC10h 50m
2026-07-20 UAL1593 LGA → DEN Jul 20, 14:05 UTCJul 20, 19:10 UTC5h 5m
2026-07-19 UAL366 DEN → AUS Jul 19, 23:10 UTCJul 20, 03:50 UTC4h 40m
2026-07-19 UAL1593 EWR → SFO Jul 19, 13:45 UTCJul 19, 18:50 UTC5h 5m
2026-07-17 UAL366 DEN → AUS Jul 17, 22:25 UTCJul 18, 03:05 UTC4h 41m
2026-07-17 UAL1593 EWR → SFO Jul 17, 14:00 UTCJul 17, 19:00 UTC5h 0m
2026-07-15 UAL131 - Jul 15, 15:00 UTCJul 15, 16:40 UTC1h 40m
2026-07-15 UAL131 EWR → EWR Jul 15, 14:53 UTCJul 15, 16:21 UTC1h 28m
2026-07-15 UAL3931 - Jul 15, 02:45 UTCJul 15, 12:00 UTC9h 15m
2026-07-15 UAL3931 GRU → EWR Jul 15, 02:52 UTCJul 15, 11:56 UTC9h 4m
2026-07-13 UAL149 - Jul 13, 01:35 UTCJul 13, 10:10 UTC8h 35m
2026-07-12 UAL56 - Jul 12, 07:55 UTCJul 12, 15:15 UTC7h 20m
2026-07-12 UAL56 CDG → EWR Jul 12, 08:09 UTCJul 12, 15:17 UTC7h 8m
2026-07-11 UAL915 IAD → CDG Jul 11, 22:45 UTCJul 12, 05:35 UTC6h 50m
2026-07-11 UAL885 - Jul 11, 09:05 UTCJul 11, 18:05 UTC9h 0m
2026-07-10 UAL884 IAD → FCO Jul 10, 22:15 UTCJul 11, 06:15 UTC8h 0m
2026-07-10 UAL884 IAD → FCO Jul 10, 21:58 UTCJul 11, 06:12 UTC8h 14m
2026-07-10 UAL914 - Jul 10, 10:55 UTCJul 10, 18:55 UTC8h 0m
2026-07-09 UAL990 - Jul 9, 22:40 UTCJul 10, 08:45 UTC10h 5m
2026-07-09 UAL990 SFO → CDG Jul 9, 22:08 UTCJul 10, 08:45 UTC10h 37m
2026-07-08 UAL927 FRA → SFO Jul 8, 16:00 UTCJul 9, 02:50 UTC10h 50m
2026-07-08 UAL926 SFO → FRA Jul 8, 02:44 UTCJul 8, 12:59 UTC10h 15m
2026-07-08 UAL926 SFO → FRA Jul 8, 02:50 UTCJul 8, 13:00 UTC10h 10m
2026-07-07 UAL45 - Jul 7, 12:10 UTCJul 7, 23:40 UTC11h 30m
2026-07-06 UAL44 SFO → ZRH Jul 6, 21:48 UTCJul 7, 08:16 UTC10h 28m
2026-07-06 UAL44 - Jul 6, 21:55 UTCJul 7, 00:25 UTC2h 30m
2026-07-06 UAL852 - Jul 6, 06:35 UTCJul 6, 18:05 UTC11h 30m
2026-07-05 UAL853 - Jul 5, 08:15 UTCJul 5, 08:45 UTC30m
2026-07-05 UAL853 SFO → TPE Jul 5, 07:37 UTCJul 5, 20:54 UTC13h 17m
2026-07-04 UAL506 - Jul 4, 14:20 UTCJul 4, 18:45 UTC4h 25m
2026-07-04 UAL506 FCO → SFO Jul 4, 14:07 UTCJul 5, 02:39 UTC12h 32m
2026-07-04 UAL506 FCO → SFO Jul 4, 14:07 UTCJul 5, 02:46 UTC12h 39m
2026-07-04 UAL507 SFO → FCO Jul 4, 00:19 UTCJul 4, 11:28 UTC11h 9m
2026-07-04 UAL507 - Jul 4, 00:30 UTCJul 4, 11:30 UTC11h 0m
2026-07-03 UAL195 MUC → SFO Jul 3, 10:05 UTCJul 3, 21:15 UTC11h 10m
2026-07-03 UAL195 MUC → SFO Jul 3, 10:02 UTCJul 3, 21:15 UTC11h 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 N78003 page for operator, model, and routing details .

Mode-S AA92FA frequently asked

What is Mode-S code AA92FA?
AA92FA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78003.
Where is Mode-S AA92FA registered?
Mode-S code AA92FA 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 AA92FA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA92FA, octal 52511372, decimal 11,178,746.
What flights does AA92FA operate?
Mode-S AA92FA has broadcast 20 distinct callsigns, including UAL875, UAL852, UAL853, UAL804, UAL131.