Apparatus

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sensors Mode-S transponder

AA92FB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78004 · BOEING 777-200 · operated by UNITED AIRLINES INC

Hex
AA92FB
Octal
52511373
Decimal
11,178,747
Country
US
Tail
N78004
Type
B772
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
261
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S AA92FB.

Country allocation

The ICAO 24-bit address AA92FB 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
UAL932 United Airlines 13 2026-07-26
UAL876 - 11 2026-07-14
UAL875 - 10 2026-07-13
UAL804 - 10 2026-06-13
UAL149 - 10 2026-07-06
UAL41 United Airlines 9 2026-04-19
UAL97 - 8 2026-07-01
UAL915 United Airlines 8 2026-04-25
UAL131 - 8 2026-06-19
UAL990 - 7 2026-07-04
UAL40 United Airlines 7 2026-04-26
UAL148 - 7 2026-07-07
UAL933 United Airlines 6 2026-07-26
UAL900 United Airlines 6 2026-04-16
UAL885 United Airlines 6 2026-07-21
UAL803 United Airlines 6 2026-06-14
UAL673 - 6 2026-06-27
UAL927 - 5 2026-07-12
UAL672 - 5 2026-06-27
UAL59 - 5 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL933 FRA → IAD Jul 26, 15:40 UTCJul 26, 22:45 UTC7h 5m
2026-07-26 UAL932 IAD → FRA Jul 26, 03:05 UTCJul 26, 10:10 UTC7h 6m
2026-07-25 UAL925 LHR → IAD Jul 25, 16:15 UTCJul 25, 23:30 UTC7h 15m
2026-07-25 UAL5 IAH → LHR Jul 25, 01:35 UTCJul 25, 10:15 UTC8h 40m
2026-07-24 UAL47 FRA → IAH Jul 24, 12:15 UTCJul 24, 14:15 UTC2h 0m
2026-07-24 UAL47 FRA → IAH Jul 24, 12:16 UTCJul 24, 22:25 UTC10h 9m
2026-07-24 UAL932 IAD → FRA Jul 24, 02:45 UTCJul 24, 09:45 UTC7h 0m
2026-07-23 UAL933 FRA → IAD Jul 23, 15:35 UTCJul 23, 23:25 UTC7h 50m
2026-07-23 UAL933 FRA → IAD Jul 23, 15:31 UTCJul 23, 23:24 UTC7h 53m
2026-07-23 UAL932 IAD → FRA Jul 23, 03:00 UTCJul 23, 10:10 UTC7h 10m
2026-07-22 UAL933 FRA → IAD Jul 22, 15:30 UTCJul 22, 23:45 UTC8h 15m
2026-07-22 UAL932 IAD → FRA Jul 22, 03:25 UTCJul 22, 05:20 UTC1h 55m
2026-07-21 UAL885 FCO → IAD Jul 21, 09:10 UTCJul 21, 18:10 UTC9h 0m
2026-07-21 UAL885 FCO → IAD Jul 21, 08:47 UTCJul 21, 18:09 UTC9h 22m
2026-07-20 UAL884 IAD → FCO Jul 20, 22:15 UTCJul 21, 06:10 UTC7h 54m
2026-07-20 UAL884 IAD → FCO Jul 20, 22:03 UTCJul 21, 06:09 UTC8h 6m
2026-07-20 UAL885 - Jul 20, 09:00 UTCJul 20, 17:55 UTC8h 55m
2026-07-20 UAL885 FCO → IAD Jul 20, 08:47 UTCJul 20, 17:52 UTC9h 5m
2026-07-19 UAL884 IAD → FCO Jul 19, 22:35 UTCJul 20, 06:40 UTC8h 5m
2026-07-19 UAL919 LHR → IAD Jul 19, 11:40 UTCJul 19, 19:15 UTC7h 35m
2026-07-18 UAL880 - Jul 18, 21:55 UTCJul 19, 06:45 UTC8h 50m
2026-07-18 UAL818 EZE → IAH Jul 18, 00:10 UTCJul 18, 10:05 UTC9h 56m
2026-07-17 UAL819 IAH → EZE Jul 17, 14:24 UTCJul 17, 15:00 UTC35m
2026-07-17 UAL819 IAH → EZE Jul 17, 01:59 UTCJul 17, 12:04 UTC10h 5m
2026-07-15 UAL160 - Jul 15, 10:35 UTCJul 15, 20:50 UTC10h 15m
2026-07-14 UAL194 SFO → MUC Jul 14, 21:37 UTCJul 15, 07:56 UTC10h 19m
2026-07-14 UAL194 - Jul 14, 21:40 UTCJul 15, 08:05 UTC10h 24m
2026-07-14 UAL876 HND → SFO Jul 14, 07:15 UTCJul 14, 16:35 UTC9h 20m
2026-07-14 UAL876 - Jul 14, 07:20 UTCJul 14, 16:40 UTC9h 20m
2026-07-13 UAL875 SFO → HND Jul 13, 18:45 UTCJul 14, 04:36 UTC9h 51m
2026-07-13 UAL875 SFO → HND Jul 13, 18:40 UTCJul 14, 04:40 UTC10h 0m
2026-07-12 UAL927 - Jul 12, 15:55 UTCJul 12, 16:45 UTC50m
2026-07-12 UAL927 FRA → SFO Jul 12, 15:51 UTCJul 13, 02:47 UTC10h 56m
2026-07-12 UAL932 IAD → FRA Jul 12, 03:33 UTCJul 12, 10:40 UTC7h 7m
2026-07-12 UAL932 - Jul 12, 03:25 UTCJul 12, 08:45 UTC5h 20m
2026-07-11 UAL933 FRA → IAD Jul 11, 16:00 UTCJul 12, 00:25 UTC8h 25m
2026-07-11 UAL46 - Jul 11, 04:15 UTCJul 11, 13:25 UTC9h 10m
2026-07-10 UAL879 - Jul 10, 09:45 UTCJul 10, 19:15 UTC9h 30m
2026-07-09 UAL14 EWR → LHR Jul 9, 23:35 UTCJul 10, 05:48 UTC6h 13m
2026-07-09 UAL14 - Jul 9, 23:45 UTCJul 10, 05:55 UTC6h 10m
2026-07-09 UAL18 MXP → EWR Jul 9, 08:06 UTCJul 9, 16:07 UTC8h 1m
2026-07-09 UAL18 MXP → EWR Jul 9, 07:55 UTCJul 9, 16:10 UTC8h 15m
2026-07-08 UAL19 EWR → MXP Jul 8, 22:03 UTCJul 9, 05:16 UTC7h 13m
2026-07-08 UAL19 - Jul 8, 21:50 UTCJul 8, 22:45 UTC55m
2026-07-08 UAL22 DUB → EWR Jul 8, 09:30 UTCJul 8, 16:00 UTC6h 30m
2026-07-08 UAL23 EWR → DUB Jul 8, 01:35 UTCJul 8, 07:25 UTC5h 50m
2026-07-07 UAL148 - Jul 7, 01:20 UTCJul 7, 01:55 UTC35m
2026-07-07 UAL148 GRU → EWR Jul 7, 01:10 UTCJul 7, 10:06 UTC8h 56m
2026-07-06 UAL149 - Jul 6, 22:25 UTCJul 6, 22:50 UTC25m
2026-07-06 UAL149 - Jul 6, 14:00 UTCJul 6, 20:40 UTC6h 40m

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 N78004 page for operator, model, and routing details .

Mode-S AA92FB frequently asked

What is Mode-S code AA92FB?
AA92FB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78004.
Where is Mode-S AA92FB registered?
Mode-S code AA92FB 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 AA92FB broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA92FB, octal 52511373, decimal 11,178,747.
What flights does AA92FB operate?
Mode-S AA92FB has broadcast 20 distinct callsigns, including UAL932, UAL876, UAL875, UAL804, UAL149.