Apparatus

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sensors Mode-S transponder

AC03F2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N87306 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC03F2
Octal
53001762
Decimal
11,273,202
Country
US
Tail
N87306
Type
E75L
No current signal · last broadcast Jul 26, 11:20 UTC
Flights observed
508
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 11:20 UTC

Last known position

Most recent position reported by Mode-S AC03F2.

Country allocation

The ICAO 24-bit address AC03F2 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
ASH4006 - 9 2026-06-25
ASH4018 Mesa Airlines 8 2026-07-24
ASH6220 - 7 2026-06-23
ASH6149 Mesa Airlines 7 2026-06-25
ASH4042 - 7 2026-07-16
ASH4033 Mesa Airlines 7 2026-06-07
ASH6258 Mesa Airlines 6 2026-06-16
ASH6248 Mesa Airlines 6 2026-05-25
ASH6195 - 6 2026-07-09
ASH6166 - 6 2026-07-19
ASH6161 - 6 2026-06-16
ASH6139 Mesa Airlines 6 2026-06-13
ASH6132 - 6 2026-07-16
ASH6117 - 6 2026-07-19
ASH6110 - 6 2026-07-03
ASH4029 Mesa Airlines 6 2026-06-26
ASH6331 Mesa Airlines 5 2026-05-08
ASH6293 Mesa Airlines 5 2026-05-10
ASH6263 Mesa Airlines 5 2026-06-22
ASH6260 Mesa Airlines 5 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH4058 IAH → JAN Jul 26, 10:15 UTCJul 26, 11:15 UTC1h 0m
2026-07-26 ASH3995 BNA → IAH Jul 26, 02:25 UTCJul 26, 03:30 UTC1h 5m
2026-07-25 ASH6144 IAD → SDF Jul 25, 22:05 UTCJul 26, 01:05 UTC3h 0m
2026-07-25 ASH4068 CMH → IAH Jul 25, 17:25 UTCJul 25, 20:25 UTC3h 0m
2026-07-25 ASH4068 CMH → IAH Jul 25, 17:30 UTCJul 25, 20:20 UTC2h 50m
2026-07-25 ASH4044 CLE → IAD Jul 25, 14:05 UTCJul 25, 15:20 UTC1h 15m
2026-07-24 ASH4016 IAH → MAF Jul 24, 23:35 UTCJul 25, 00:55 UTC1h 20m
2026-07-24 ASH4018 MKE → IAH Jul 24, 19:35 UTCJul 24, 20:40 UTC1h 5m
2026-07-24 ASH4018 MKE → IAH Jul 24, 19:12 UTCJul 24, 20:41 UTC1h 29m
2026-07-24 ASH6240 IAH → MEM Jul 24, 16:50 UTCJul 24, 17:50 UTC1h 0m
2026-07-24 ASH6184 - Jul 24, 15:10 UTCJul 24, 15:50 UTC40m
2026-07-24 ASH6119 LGA → IAH Jul 24, 12:40 UTCJul 24, 13:15 UTC35m
2026-07-24 ASH4078 IAH → IND Jul 24, 00:30 UTCJul 24, 01:50 UTC1h 20m
2026-07-23 ASH6112 CLT → IAH Jul 23, 22:25 UTCJul 23, 23:30 UTC1h 5m
2026-07-23 ASH4067 IAH → MAF Jul 23, 18:05 UTCJul 23, 19:10 UTC1h 5m
2026-07-23 ASH3990 BNA → IAH Jul 23, 13:40 UTCJul 23, 15:35 UTC1h 55m
2026-07-23 ASH4041 IND → IAD Jul 23, 10:45 UTCJul 23, 11:50 UTC1h 5m
2026-07-22 ASH6171 IAD → BDL Jul 22, 22:05 UTCJul 22, 23:10 UTC1h 5m
2026-07-22 ASH3237 - Jul 22, 16:25 UTCJul 22, 18:00 UTC1h 35m
2026-07-21 ASH6206 - Jul 21, 01:15 UTCJul 21, 03:05 UTC1h 50m
2026-07-20 ASH4047 IAH → ATL Jul 20, 20:55 UTCJul 20, 22:50 UTC1h 55m
2026-07-20 ASH4048 - Jul 20, 17:30 UTCJul 20, 19:35 UTC2h 5m
2026-07-20 ASH4007 - Jul 20, 14:15 UTCJul 20, 15:25 UTC1h 10m
2026-07-19 ASH3991 IAH → CHS Jul 19, 23:40 UTCJul 20, 00:50 UTC1h 10m
2026-07-19 ASH3991 IAH → CHS Jul 19, 23:42 UTCJul 20, 00:48 UTC1h 6m
2026-07-19 ASH6117 - Jul 19, 20:15 UTCJul 19, 22:05 UTC1h 50m
2026-07-19 ASH6117 DSM → IAH Jul 19, 20:15 UTCJul 19, 22:07 UTC1h 52m
2026-07-19 ASH6166 - Jul 19, 17:15 UTCJul 19, 19:05 UTC1h 50m
2026-07-19 ASH6166 IAH → DSM Jul 19, 17:13 UTCJul 19, 19:03 UTC1h 50m
2026-07-19 ASH6326 - Jul 19, 13:40 UTCJul 19, 15:30 UTC1h 50m
2026-07-18 ASH4050 - Jul 18, 21:45 UTCJul 18, 23:35 UTC1h 50m
2026-07-18 ASH4050 IAH → SDF Jul 18, 21:54 UTCJul 18, 23:33 UTC1h 39m
2026-07-18 ASH4030 - Jul 18, 18:15 UTCJul 18, 20:05 UTC1h 50m
2026-07-18 ASH6122 - Jul 18, 15:10 UTCJul 18, 17:00 UTC1h 50m
2026-07-18 ASH6283 STL → IAH Jul 18, 11:34 UTCJul 18, 12:55 UTC1h 21m
2026-07-18 ASH6283 - Jul 18, 11:20 UTCJul 18, 13:00 UTC1h 40m
2026-07-18 ASH6187 - Jul 18, 01:45 UTCJul 18, 03:15 UTC1h 31m
2026-07-17 ASH6231 - Jul 17, 21:15 UTCJul 17, 23:45 UTC2h 30m
2026-07-17 ASH4057 - Jul 17, 17:20 UTCJul 17, 19:55 UTC2h 35m
2026-07-17 ASH6223 - Jul 17, 13:35 UTCJul 17, 15:35 UTC2h 0m
2026-07-16 ASH6132 IAH → IND Jul 16, 21:50 UTCJul 16, 23:49 UTC2h 0m
2026-07-16 ASH6132 IAH → IND Jul 16, 21:54 UTCJul 16, 23:43 UTC1h 49m
2026-07-16 ASH6281 - Jul 16, 19:40 UTCJul 16, 20:25 UTC45m
2026-07-16 ASH6202 - Jul 16, 17:25 UTCJul 16, 18:05 UTC40m
2026-07-16 ASH4042 - Jul 16, 13:45 UTCJul 16, 14:29 UTC45m
2026-07-16 ASH4042 TUS → IAH Jul 16, 13:53 UTCJul 16, 15:49 UTC1h 56m
2026-07-16 ASH4040 - Jul 16, 01:20 UTCJul 16, 03:20 UTC2h 0m
2026-07-15 ASH4047 - Jul 15, 21:15 UTCJul 15, 23:10 UTC1h 55m
2026-07-15 ASH4048 - Jul 15, 18:25 UTCJul 15, 20:20 UTC1h 55m
2026-07-15 ASH4048 IAH → JAX Jul 15, 18:32 UTCJul 15, 20:11 UTC1h 39m

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 N87306 page for operator, model, and routing details .

Mode-S AC03F2 frequently asked

What is Mode-S code AC03F2?
AC03F2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N87306.
Where is Mode-S AC03F2 registered?
Mode-S code AC03F2 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 AC03F2 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC03F2, octal 53001762, decimal 11,273,202.
What flights does AC03F2 operate?
Mode-S AC03F2 has broadcast 20 distinct callsigns, including ASH4006, ASH4018, ASH6220, ASH6149, ASH4042.