Apparatus

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sensors Mode-S transponder

A5CC3C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N47298 · operated by UNITED AIRLINES INC

Hex
A5CC3C
Octal
51346074
Decimal
10,865,724
Country
US
Tail
N47298
Type
B38M
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
418
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S A5CC3C.

Country allocation

The ICAO 24-bit address A5CC3C 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
UAL1901 - 7 2026-06-18
UAL1137 - 7 2026-06-18
UAL518 United Airlines 5 2026-07-20
UAL1976 United Airlines 5 2026-05-17
UAL2859 - 4 2026-07-07
UAL2664 - 4 2026-06-27
UAL2413 - 4 2026-07-05
UAL2146 United Airlines 4 2026-07-23
UAL1977 United Airlines 4 2026-05-17
UAL1769 - 4 2026-06-29
UAL1698 United Airlines 4 2026-07-02
UAL1523 - 4 2026-07-11
UAL1172 United Airlines 4 2026-06-09
UAL1138 United Airlines 4 2026-04-13
UAL1104 United Airlines 4 2026-07-24
UAL1002 United Airlines 4 2026-07-21
UAL783 - 3 2026-07-14
UAL643 United Airlines 3 2026-05-03
UAL564 - 3 2026-07-06
UAL504 - 3 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL1862 ORD → PUJ Jul 26, 19:30 UTCJul 26, 21:15 UTC1h 45m
2026-07-26 UAL2298 SFO → PHX Jul 26, 14:05 UTCJul 26, 15:50 UTC1h 45m
2026-07-26 UAL2298 SFO → PHX Jul 26, 14:06 UTCJul 26, 15:38 UTC1h 32m
2026-07-26 UAL2681 DEN → SFO Jul 26, 07:05 UTCJul 26, 11:00 UTC3h 55m
2026-07-26 UAL2681 DEN → SFO Jul 26, 07:13 UTCJul 26, 11:53 UTC4h 40m
2026-07-25 UAL368 EWR → FLL Jul 25, 22:05 UTCJul 26, 03:25 UTC5h 20m
2026-07-25 UAL1678 SFO → IAH Jul 25, 15:55 UTCJul 25, 20:25 UTC4h 30m
2026-07-25 UAL1272 LAX → SFO Jul 25, 03:55 UTCJul 25, 05:40 UTC1h 45m
2026-07-25 UAL1272 LAX → SFO Jul 25, 01:50 UTCJul 25, 02:05 UTC15m
2026-07-24 UAL1271 SFO → MEX Jul 24, 23:25 UTCJul 24, 23:30 UTC5m
2026-07-24 UAL1271 SFO → MEX Jul 24, 19:40 UTCJul 24, 21:35 UTC1h 55m
2026-07-24 UAL1372 SFO → LAS Jul 24, 15:45 UTCJul 24, 16:40 UTC55m
2026-07-24 UAL1612 IAH → BOS Jul 24, 11:45 UTCJul 24, 12:55 UTC1h 10m
2026-07-24 UAL1104 SJC → DEN Jul 24, 00:40 UTCJul 24, 06:00 UTC5h 20m
2026-07-24 UAL1104 SJC → DEN Jul 24, 00:31 UTCJul 24, 06:08 UTC5h 37m
2026-07-23 UAL2146 LAX → DEN Jul 23, 19:20 UTCJul 23, 21:55 UTC2h 35m
2026-07-23 UAL1914 PDX → SFO Jul 23, 12:35 UTCJul 23, 18:00 UTC5h 25m
2026-07-23 UAL2766 HKG → ORD Jul 23, 03:20 UTCJul 23, 04:35 UTC1h 15m
2026-07-22 UAL2007 GUA → ORD Jul 22, 20:35 UTCJul 22, 22:55 UTC2h 20m
2026-07-22 UAL2007 GUA → ORD Jul 22, 18:35 UTCJul 22, 18:40 UTC5m
2026-07-22 UAL1751 IAH → GUA Jul 22, 14:55 UTCJul 22, 17:25 UTC2h 30m
2026-07-21 UAL1002 DEN → SJC Jul 21, 23:20 UTCJul 22, 02:35 UTC3h 15m
2026-07-21 UAL1903 GUA → IAH Jul 21, 20:25 UTCJul 21, 20:55 UTC30m
2026-07-21 UAL1903 GUA → IAH Jul 21, 18:35 UTCJul 21, 18:45 UTC10m
2026-07-21 UAL1751 IAH → GUA Jul 21, 16:55 UTCJul 21, 17:10 UTC15m
2026-07-21 UAL1751 IAH → GUA Jul 21, 14:45 UTCJul 21, 15:20 UTC35m
2026-07-21 UAL2083 UIO → IAH Jul 21, 07:10 UTCJul 21, 10:30 UTC3h 20m
2026-07-20 UAL1002 DEN → SJC Jul 20, 23:35 UTCJul 21, 02:50 UTC3h 15m
2026-07-20 UAL1002 DEN → SJC Jul 20, 23:31 UTCJul 21, 04:25 UTC4h 54m
2026-07-20 UAL527 XPL → IAH Jul 20, 19:05 UTCJul 20, 21:25 UTC2h 20m
2026-07-20 UAL518 IAH → XPL Jul 20, 14:55 UTCJul 20, 17:10 UTC2h 15m
2026-07-20 UAL518 IAH → XPL Jul 20, 14:50 UTCJul 20, 17:19 UTC2h 29m
2026-07-20 UAL2393 AUS → IAH Jul 20, 12:20 UTCJul 20, 12:55 UTC35m
2026-07-20 UAL1942 MSY → SFO Jul 20, 01:25 UTCJul 20, 03:05 UTC1h 40m
2026-07-19 UAL1918 - Jul 19, 19:00 UTCJul 19, 23:00 UTC4h 0m
2026-07-19 UAL1876 EWR → LIR Jul 19, 12:01 UTCJul 19, 16:51 UTC4h 50m
2026-07-19 UAL1876 - Jul 19, 11:50 UTCJul 19, 16:40 UTC4h 50m
2026-07-19 UAL1827 ORD → EWR Jul 19, 04:45 UTCJul 19, 06:15 UTC1h 30m
2026-07-18 UAL1827 SAN → ORD Jul 18, 21:56 UTCJul 19, 03:26 UTC5h 30m
2026-07-18 UAL1827 - Jul 18, 21:45 UTCJul 19, 02:30 UTC4h 45m
2026-07-18 UAL2399 - Jul 18, 17:15 UTCJul 18, 20:05 UTC2h 50m
2026-07-18 UAL2399 IAH → SAN Jul 18, 17:21 UTCJul 18, 19:59 UTC2h 38m
2026-07-18 UAL226 - Jul 18, 11:45 UTCJul 18, 15:20 UTC3h 35m
2026-07-18 UAL226 BOS → IAH Jul 18, 11:42 UTCJul 18, 15:13 UTC3h 31m
2026-07-18 UAL2656 SNA → DEN Jul 18, 06:25 UTCJul 18, 09:50 UTC3h 25m
2026-07-18 UAL1959 ANC → DEN Jul 18, 00:04 UTCJul 18, 05:10 UTC5h 6m
2026-07-17 UAL280 DEN → ANC Jul 17, 17:44 UTCJul 17, 22:35 UTC4h 50m
2026-07-17 UAL280 - Jul 17, 14:35 UTCJul 17, 15:55 UTC1h 20m
2026-07-17 UAL2793 - Jul 17, 00:20 UTCJul 17, 01:00 UTC40m
2026-07-17 UAL2793 DEN → MCI Jul 17, 00:18 UTCJul 17, 01:29 UTC1h 11m

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 N47298 page for operator, model, and routing details .

Mode-S A5CC3C frequently asked

What is Mode-S code A5CC3C?
A5CC3C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N47298.
Where is Mode-S A5CC3C registered?
Mode-S code A5CC3C 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 A5CC3C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5CC3C, octal 51346074, decimal 10,865,724.
What flights does A5CC3C operate?
Mode-S A5CC3C has broadcast 20 distinct callsigns, including UAL1901, UAL1137, UAL518, UAL1976, UAL2859.