Apparatus

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sensors Mode-S transponder

A03356

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N11176 · EMBRAER ERJ-145XR · operated by UNITED AIRLINES INC

Hex
A03356
Octal
50031526
Decimal
10,498,902
Country
US
Tail
N11176
Type
E45X
No current signal · last broadcast 7d ago
Flights observed
197
Distinct callsigns
20
Country
US
Last broadcast
7d ago

Last known position

Most recent position reported by Mode-S A03356.

Country allocation

The ICAO 24-bit address A03356 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
UCA4871 CommutAir 5 2026-07-24
UCA4861 CommutAir 4 2026-07-25
UCA4225 CommutAir 4 2026-07-26
UCA3280 - 4 2026-07-01
UCA4958 CommutAir 3 2026-07-25
UCA4919 CommutAir 3 2026-07-23
UCA4893 CommutAir 3 2026-07-25
UCA4852 - 3 2026-06-28
UCA4839 - 3 2026-07-13
UCA4837 CommutAir 3 2026-07-21
UCA4817 - 3 2026-07-13
UCA4372 - 3 2026-07-15
UCA4350 CommutAir 3 2026-07-22
UCA4343 CommutAir 3 2026-07-26
UCA4326 CommutAir 3 2026-07-22
UCA4286 CommutAir 3 2026-07-25
UCA4268 - 3 2026-07-15
UCA4240 - 3 2026-07-14
UCA4232 - 3 2026-07-23
UCA4224 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UCA4929 LBB → IAH Jul 26, 19:45 UTCJul 26, 20:25 UTC40m
2026-07-26 UCA4851 - Jul 26, 17:00 UTCJul 26, 18:20 UTC1h 20m
2026-07-26 UCA4225 IAH → LCH Jul 26, 14:30 UTCJul 26, 16:00 UTC1h 30m
2026-07-26 UCA4225 IAH → LCH Jul 26, 14:43 UTCJul 26, 15:53 UTC1h 10m
2026-07-26 UCA4255 IAH → BRO Jul 26, 11:45 UTCJul 26, 13:10 UTC1h 25m
2026-07-26 UCA4343 IAD → PHL Jul 26, 01:15 UTCJul 26, 02:35 UTC1h 20m
2026-07-25 UCA4893 LBB → IAH Jul 25, 21:35 UTCJul 25, 23:00 UTC1h 25m
2026-07-25 UCA4286 PWM → IAD Jul 25, 17:15 UTCJul 25, 18:35 UTC1h 20m
2026-07-25 UCA4958 GSP → IAD Jul 25, 15:10 UTCJul 25, 16:05 UTC55m
2026-07-25 UCA4958 GSP → IAD Jul 25, 15:12 UTCJul 25, 16:07 UTC55m
2026-07-25 UCA4961 IAD → GSP Jul 25, 13:20 UTCJul 25, 14:25 UTC1h 5m
2026-07-25 UCA4939 ITH → IAD Jul 25, 10:10 UTCJul 25, 10:55 UTC45m
2026-07-25 UCA4939 ITH → IAD Jul 25, 10:16 UTCJul 25, 10:58 UTC42m
2026-07-25 UCA4950 IAD → ITH Jul 25, 02:45 UTCJul 25, 03:20 UTC35m
2026-07-25 UCA4861 IAH → LIT Jul 25, 00:05 UTCJul 25, 00:55 UTC50m
2026-07-24 UCA4871 IAD → ROC Jul 24, 21:53 UTCJul 24, 22:23 UTC30m
2026-07-24 UCA4871 IAD → ROC Jul 24, 21:45 UTCJul 24, 22:30 UTC45m
2026-07-24 UCA4314 PWM → IAD Jul 24, 17:55 UTCJul 24, 19:55 UTC2h 0m
2026-07-24 UCA4369 - Jul 24, 15:45 UTCJul 24, 16:45 UTC1h 0m
2026-07-23 UCA4232 - Jul 23, 12:30 UTCJul 23, 13:30 UTC1h 0m
2026-07-23 UCA4919 IAH → TUL Jul 23, 01:50 UTCJul 23, 02:40 UTC50m
2026-07-22 UCA4326 IAD → YUL Jul 22, 19:15 UTCJul 22, 20:00 UTC45m
2026-07-22 UCA4326 IAD → YUL Jul 22, 19:18 UTCJul 22, 20:03 UTC45m
2026-07-22 UCA4350 PWM → IAD Jul 22, 17:30 UTCJul 22, 18:15 UTC45m
2026-07-22 UCA4350 PWM → IAD Jul 22, 17:42 UTCJul 22, 18:12 UTC30m
2026-07-21 UCA4928 - Jul 21, 17:50 UTCJul 21, 18:35 UTC45m
2026-07-21 UCA4894 IAH → CRP Jul 21, 15:20 UTCJul 21, 16:00 UTC40m
2026-07-21 UCA4837 BTR → IAH Jul 21, 12:15 UTCJul 21, 13:15 UTC1h 0m
2026-07-20 UCA5004 IAH → MSY Jul 20, 23:45 UTCJul 21, 00:45 UTC1h 0m
2026-07-20 UCA5004 IAH → MSY Jul 20, 23:42 UTCJul 21, 00:42 UTC1h 0m
2026-07-20 UCA4377 - Jul 20, 21:20 UTCJul 20, 22:05 UTC45m
2026-07-20 UCA4377 CRP → IAH Jul 20, 21:25 UTCJul 20, 22:04 UTC39m
2026-07-20 UCA4825 IAD → PVD Jul 20, 19:55 UTCJul 20, 20:35 UTC40m
2026-07-20 UCA4338 IAD → CMH Jul 20, 17:00 UTCJul 20, 18:15 UTC1h 15m
2026-07-20 UCA4297 IAD → PVD Jul 20, 14:55 UTCJul 20, 16:05 UTC1h 10m
2026-07-20 UCA4226 LRD → IAH Jul 20, 12:25 UTCJul 20, 13:30 UTC1h 5m
2026-07-20 UCA4285 IAH → MFE Jul 20, 00:05 UTCJul 20, 01:00 UTC55m
2026-07-19 UCA4365 - Jul 19, 21:50 UTCJul 19, 22:40 UTC50m
2026-07-19 UCA4929 - Jul 19, 19:40 UTCJul 19, 20:20 UTC40m
2026-07-19 UCA4361 - Jul 19, 17:05 UTCJul 19, 18:10 UTC1h 5m
2026-07-19 UCA4344 - Jul 19, 15:00 UTCJul 19, 16:00 UTC1h 0m
2026-07-19 UCA4837 - Jul 19, 12:15 UTCJul 19, 13:10 UTC55m
2026-07-19 UCA4837 GPT → IAH Jul 19, 12:13 UTCJul 19, 13:15 UTC1h 2m
2026-07-19 UCA4337 TUL → IAH Jul 19, 01:50 UTCJul 19, 02:45 UTC55m
2026-07-18 UCA4893 - Jul 18, 21:35 UTCJul 18, 23:00 UTC1h 25m
2026-07-18 UCA4286 - Jul 18, 17:10 UTCJul 18, 18:40 UTC1h 30m
2026-07-18 UCA4324 - Jul 18, 14:50 UTCJul 18, 15:35 UTC45m
2026-07-18 UCA4236 - Jul 18, 12:35 UTCJul 18, 13:30 UTC55m
2026-07-18 UCA4244 - Jul 18, 10:25 UTCJul 18, 10:50 UTC25m
2026-07-18 UCA4964 - Jul 18, 02:55 UTCJul 18, 03:20 UTC25m

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 N11176 page for operator, model, and routing details .

Mode-S A03356 frequently asked

What is Mode-S code A03356?
A03356 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N11176.
Where is Mode-S A03356 registered?
Mode-S code A03356 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 A03356 broadcasting right now?
No active broadcast right now. Last signal was 7d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A03356, octal 50031526, decimal 10,498,902.
What flights does A03356 operate?
Mode-S A03356 has broadcast 20 distinct callsigns, including UCA4871, UCA4861, UCA4225, UCA3280, UCA4958.