Apparatus

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sensors Mode-S transponder

A12796

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N17361 · BOEING 737 MAX 8 · operated by UNITED AIRLINES INC

Hex
A12796
Octal
50223626
Decimal
10,561,430
Country
US
Tail
N17361
Type
B38M
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
444
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S A12796.

Country allocation

The ICAO 24-bit address A12796 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
UAL267 United Airlines 7 2026-06-03
UAL2200 United Airlines 6 2026-05-18
UAL1560 - 6 2026-06-12
UAL841 United Airlines 5 2026-07-19
UAL840 United Airlines 5 2026-05-24
UAL450 - 5 2026-07-12
UAL2092 United Airlines 5 2026-05-30
UAL2036 - 5 2026-07-09
UAL1080 United Airlines 5 2026-05-27
UAL783 - 4 2026-07-15
UAL560 United Airlines 4 2026-05-22
UAL359 United Airlines 4 2026-07-17
UAL278 - 4 2026-07-10
UAL1986 United Airlines 4 2026-05-11
UAL1903 - 4 2026-07-20
UAL660 - 3 2026-07-17
UAL539 - 3 2026-07-01
UAL474 - 3 2026-07-17
UAL369 United Airlines 3 2026-07-24
UAL2677 United Airlines 3 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UAL2409 PHL → ORD Jul 26, 20:05 UTCJul 26, 21:15 UTC1h 10m
2026-07-26 UAL2830 IAH → SFO Jul 26, 16:10 UTCJul 26, 18:05 UTC1h 55m
2026-07-26 UAL1750 PHX → EWR Jul 26, 11:35 UTCJul 26, 12:20 UTC45m
2026-07-26 UAL1749 SFO → OGG Jul 26, 00:05 UTCJul 26, 00:45 UTC40m
2026-07-25 UAL1958 RDU → EWR Jul 25, 17:27 UTCJul 25, 21:26 UTC3h 59m
2026-07-25 UAL1958 RDU → EWR Jul 25, 17:27 UTCJul 25, 21:38 UTC4h 11m
2026-07-25 UAL1124 ORD → MSN Jul 25, 02:45 UTCJul 25, 03:15 UTC30m
2026-07-24 UAL2866 LAX → CLE Jul 24, 23:25 UTCJul 25, 01:20 UTC1h 55m
2026-07-24 UAL2866 LAX → CLE Jul 24, 23:07 UTCJul 25, 01:02 UTC1h 55m
2026-07-24 UAL2744 MCO → EWR Jul 24, 20:30 UTCJul 24, 22:00 UTC1h 30m
2026-07-24 UAL369 BOS → EWR Jul 24, 13:25 UTCJul 24, 18:50 UTC5h 25m
2026-07-24 UAL2224 SEA → SFO Jul 24, 02:00 UTCJul 24, 04:35 UTC2h 35m
2026-07-23 UAL1099 SJO → IAH Jul 23, 19:45 UTCJul 23, 23:10 UTC3h 25m
2026-07-23 UAL1096 IAH → SJO Jul 23, 15:10 UTCJul 23, 18:20 UTC3h 10m
2026-07-23 UAL1450 EWR → PBI Jul 23, 10:10 UTCJul 23, 12:45 UTC2h 35m
2026-07-22 UAL1627 LAX → EWR Jul 22, 23:20 UTCJul 23, 01:55 UTC2h 35m
2026-07-22 UAL1455 EWR → MIA Jul 22, 19:20 UTCJul 22, 21:35 UTC2h 15m
2026-07-22 UAL1454 IAH → NAS Jul 22, 15:00 UTCJul 22, 17:15 UTC2h 15m
2026-07-22 UAL2302 - Jul 22, 11:10 UTCJul 22, 13:05 UTC1h 55m
2026-07-21 UAL2439 TPA → ORD Jul 21, 23:50 UTCJul 22, 02:30 UTC2h 40m
2026-07-21 UAL1455 EWR → MIA Jul 21, 19:40 UTCJul 21, 22:05 UTC2h 25m
2026-07-21 UAL1455 EWR → MIA Jul 21, 19:35 UTCJul 21, 21:57 UTC2h 22m
2026-07-21 UAL1454 IAH → NAS Jul 21, 15:20 UTCJul 21, 17:35 UTC2h 15m
2026-07-21 UAL1454 IAH → NAS Jul 21, 15:06 UTCJul 21, 17:56 UTC2h 50m
2026-07-21 UAL2302 ORF → IAH Jul 21, 10:35 UTCJul 21, 13:00 UTC2h 25m
2026-07-20 UAL2439 TPA → ORD Jul 20, 23:40 UTCJul 21, 02:30 UTC2h 50m
2026-07-20 UAL1903 - Jul 20, 20:30 UTCJul 20, 21:05 UTC35m
2026-07-20 UAL1903 - Jul 20, 18:40 UTCJul 20, 18:50 UTC10m
2026-07-20 UAL1751 IAH → GUA Jul 20, 15:00 UTCJul 20, 17:25 UTC2h 25m
2026-07-20 UAL1552 ANC → IAH Jul 20, 06:40 UTCJul 20, 13:10 UTC6h 30m
2026-07-19 UAL841 NRT → GUM Jul 19, 22:20 UTCJul 20, 04:40 UTC6h 20m
2026-07-19 UAL1332 DCA → ORD Jul 19, 11:55 UTCJul 19, 14:15 UTC2h 20m
2026-07-19 UAL1394 IAH → PIT Jul 19, 04:30 UTCJul 19, 06:40 UTC2h 10m
2026-07-18 UAL1009 EWR → MCO Jul 18, 22:15 UTCJul 19, 02:00 UTC3h 45m
2026-07-18 UAL1008 ORD → SBA Jul 18, 14:35 UTCJul 18, 18:10 UTC3h 35m
2026-07-18 UAL2797 - Jul 18, 06:00 UTCJul 18, 07:45 UTC1h 45m
2026-07-18 UAL2797 PHL → ORD Jul 18, 05:47 UTCJul 18, 07:38 UTC1h 51m
2026-07-18 UAL8144 - Jul 18, 03:20 UTCJul 18, 05:00 UTC1h 40m
2026-07-18 UAL8144 ORD → PHL Jul 18, 03:18 UTCJul 18, 04:53 UTC1h 35m
2026-07-17 UAL474 - Jul 17, 20:35 UTCJul 18, 00:10 UTC3h 35m
2026-07-17 UAL474 MEX → ORD Jul 17, 20:28 UTCJul 17, 23:56 UTC3h 28m
2026-07-17 UAL359 ORD → MEX Jul 17, 15:10 UTCJul 17, 18:44 UTC3h 35m
2026-07-17 UAL660 - Jul 17, 10:10 UTCJul 17, 11:45 UTC1h 35m
2026-07-17 UAL660 PHL → ORD Jul 17, 10:14 UTCJul 17, 11:37 UTC1h 23m
2026-07-17 UAL1744 - Jul 17, 03:39 UTCJul 17, 05:04 UTC1h 25m
2026-07-17 UAL1744 ORD → PHL Jul 17, 03:18 UTCJul 17, 05:01 UTC1h 43m
2026-07-16 UAL590 - Jul 16, 21:50 UTCJul 16, 23:40 UTC1h 50m
2026-07-16 UAL1720 - Jul 16, 17:45 UTCJul 16, 20:19 UTC2h 35m
2026-07-16 UAL2319 - Jul 16, 13:54 UTCJul 16, 15:40 UTC1h 45m
2026-07-15 UAL2375 DEN → TPA Jul 15, 20:20 UTCJul 15, 23:30 UTC3h 10m

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 N17361 page for operator, model, and routing details .

Mode-S A12796 frequently asked

What is Mode-S code A12796?
A12796 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N17361.
Where is Mode-S A12796 registered?
Mode-S code A12796 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 A12796 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A12796, octal 50223626, decimal 10,561,430.
What flights does A12796 operate?
Mode-S A12796 has broadcast 20 distinct callsigns, including UAL267, UAL2200, UAL1560, UAL841, UAL840.