Apparatus

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sensors Mode-S transponder

AA92FF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N78008 · BOEING 777-200 · operated by UNITED AIRLINES INC

Hex
AA92FF
Octal
52511377
Decimal
11,178,751
Country
US
Tail
N78008
Type
B772
No current signal · last broadcast Jul 26, 09:40 UTC
Flights observed
257
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 09:40 UTC

Last known position

Most recent position reported by Mode-S AA92FF.

Country allocation

The ICAO 24-bit address AA92FF 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
UAL919 - 19 2026-07-15
UAL918 United Airlines 15 2026-06-09
UAL130 United Airlines 10 2026-07-24
UAL803 United Airlines 8 2026-07-23
UAL4 - 8 2026-06-18
UAL880 United Airlines 7 2026-05-07
UAL879 United Airlines 7 2026-04-15
UAL852 United Airlines 7 2026-05-27
UAL819 United Airlines 7 2026-06-02
UAL5 - 7 2026-06-18
UAL927 United Airlines 6 2026-05-29
UAL889 United Airlines 6 2026-07-02
UAL888 United Airlines 6 2026-07-01
UAL853 United Airlines 6 2026-05-26
UAL47 United Airlines 6 2026-06-16
UAL44 United Airlines 6 2026-05-27
UAL19 - 6 2026-06-25
UAL18 - 6 2026-06-26
UAL55 - 5 2026-07-18
UAL54 - 5 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL148 GRU → EWR Jul 26, 00:40 UTCJul 26, 09:35 UTC8h 56m
2026-07-25 UAL149 EWR → GRU Jul 25, 01:10 UTCJul 25, 09:55 UTC8h 45m
2026-07-24 UAL130 HND → EWR Jul 24, 09:45 UTCJul 24, 22:20 UTC12h 35m
2026-07-23 UAL803 IAD → HND Jul 23, 17:15 UTCJul 24, 06:50 UTC13h 35m
2026-07-22 UAL804 HND → IAD Jul 22, 12:25 UTCJul 22, 18:50 UTC6h 25m
2026-07-21 UAL875 SFO → HND Jul 21, 18:30 UTCJul 22, 04:40 UTC10h 10m
2026-07-20 UAL2328 ORD → SFO Jul 20, 19:20 UTCJul 21, 00:30 UTC5h 9m
2026-07-20 UAL71 AMS → EWR Jul 20, 07:45 UTCJul 20, 15:05 UTC7h 20m
2026-07-19 UAL70 EWR → AMS Jul 19, 22:28 UTCJul 20, 05:06 UTC6h 38m
2026-07-19 UAL70 EWR → AMS Jul 19, 22:45 UTCJul 20, 05:20 UTC6h 35m
2026-07-18 UAL55 - Jul 18, 13:40 UTCJul 18, 20:50 UTC7h 10m
2026-07-18 UAL54 EWR → CDG Jul 18, 04:14 UTCJul 18, 10:46 UTC6h 32m
2026-07-18 UAL54 - Jul 18, 04:15 UTCJul 18, 10:45 UTC6h 30m
2026-07-17 UAL130 HND → EWR Jul 17, 13:29 UTCJul 18, 01:25 UTC11h 55m
2026-07-16 UAL803 IAD → HND Jul 16, 19:14 UTCJul 17, 08:25 UTC13h 10m
2026-07-16 UAL803 IAD → HND Jul 16, 19:20 UTCJul 17, 08:22 UTC13h 2m
2026-07-15 UAL919 - Jul 15, 11:55 UTCJul 15, 19:20 UTC7h 25m
2026-07-14 UAL14 EWR → LHR Jul 14, 23:25 UTCJul 15, 05:50 UTC6h 25m
2026-07-13 UAL71 - Jul 13, 07:25 UTCJul 13, 14:30 UTC7h 5m
2026-07-12 UAL70 EWR → AMS Jul 12, 22:20 UTCJul 13, 04:55 UTC6h 35m
2026-07-12 UAL121 BCN → EWR Jul 12, 10:22 UTCJul 12, 18:16 UTC7h 54m
2026-07-12 UAL121 BCN → EWR Jul 12, 10:25 UTCJul 12, 18:20 UTC7h 55m
2026-07-12 UAL120 EWR → BCN Jul 12, 00:01 UTCJul 12, 07:01 UTC7h 0m
2026-07-11 UAL121 BCN → EWR Jul 11, 10:52 UTCJul 11, 18:23 UTC7h 31m
2026-07-11 UAL121 BCN → EWR Jul 11, 10:52 UTCJul 11, 18:22 UTC7h 30m
2026-07-11 UAL121 - Jul 11, 10:40 UTCJul 11, 11:45 UTC1h 5m
2026-07-10 UAL120 EWR → BCN Jul 10, 23:45 UTCJul 11, 06:26 UTC6h 41m
2026-07-10 UAL120 - Jul 10, 23:45 UTCJul 11, 06:50 UTC7h 5m
2026-07-09 UAL148 - Jul 9, 00:25 UTCJul 9, 09:35 UTC9h 10m
2026-07-08 UAL149 EWR → GRU Jul 8, 01:01 UTCJul 8, 10:01 UTC9h 0m
2026-07-08 UAL149 - Jul 8, 01:15 UTCJul 8, 10:05 UTC8h 50m
2026-07-07 UAL130 HND → EWR Jul 7, 09:10 UTCJul 7, 21:13 UTC12h 3m
2026-07-07 UAL130 HND → EWR Jul 7, 09:00 UTCJul 7, 21:15 UTC12h 15m
2026-07-06 UAL803 IAD → HND Jul 6, 17:10 UTCJul 7, 06:22 UTC13h 12m
2026-07-06 UAL803 IAD → HND Jul 6, 17:20 UTCJul 7, 06:15 UTC12h 55m
2026-07-05 UAL804 HND → IAD Jul 5, 07:10 UTCJul 5, 19:20 UTC12h 10m
2026-07-04 UAL875 SFO → HND Jul 4, 18:25 UTCJul 5, 04:49 UTC10h 24m
2026-07-04 UAL875 SFO → HND Jul 4, 18:30 UTCJul 5, 04:45 UTC10h 15m
2026-07-03 UAL506 FCO → SFO Jul 3, 19:50 UTCJul 4, 07:55 UTC12h 5m
2026-07-03 UAL507 SFO → FCO Jul 3, 06:24 UTCJul 3, 17:27 UTC11h 3m
2026-07-03 UAL507 - Jul 3, 06:35 UTCJul 3, 17:35 UTC11h 0m
2026-07-02 UAL889 PEK → SFO Jul 2, 11:20 UTCJul 2, 12:45 UTC1h 25m
2026-07-02 UAL889 PEK → SFO Jul 2, 10:39 UTCJul 2, 21:00 UTC10h 21m
2026-07-01 UAL888 SFO → PEK Jul 1, 19:00 UTCJul 2, 07:00 UTC12h 0m
2026-07-01 UAL888 SFO → PEK Jul 1, 18:15 UTCJul 2, 08:14 UTC13h 59m
2026-06-30 UAL506 FCO → SFO Jun 30, 14:39 UTCJul 1, 02:03 UTC11h 24m
2026-06-30 UAL506 - Jun 30, 14:20 UTCJun 30, 23:45 UTC9h 25m
2026-06-30 UAL507 - Jun 30, 00:25 UTCJun 30, 11:45 UTC11h 21m
2026-06-29 UAL889 PEK → SFO Jun 29, 10:34 UTCJun 29, 11:45 UTC1h 10m
2026-06-29 UAL889 PEK → SFO Jun 29, 09:51 UTCJun 29, 20:54 UTC11h 3m

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 N78008 page for operator, model, and routing details .

Mode-S AA92FF frequently asked

What is Mode-S code AA92FF?
AA92FF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N78008.
Where is Mode-S AA92FF registered?
Mode-S code AA92FF 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 AA92FF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA92FF, octal 52511377, decimal 11,178,751.
What flights does AA92FF operate?
Mode-S AA92FF has broadcast 20 distinct callsigns, including UAL919, UAL918, UAL130, UAL803, UAL4.