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sensors Mode-S transponder

AC52EE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N89304 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC52EE
Octal
53051356
Decimal
11,293,422
Country
US
Tail
N89304
Type
E75L
No current signal · last broadcast 6h ago
Flights observed
539
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S AC52EE.

Country allocation

The ICAO 24-bit address AC52EE 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
ASH6155 Mesa Airlines 9 2026-06-12
ASH6128 - 8 2026-07-07
ASH4026 - 8 2026-07-07
ASH4000 - 8 2026-07-12
ASH6353 - 7 2026-06-25
ASH6310 - 7 2026-06-20
ASH6309 - 7 2026-07-01
ASH6219 - 7 2026-07-11
ASH6118 - 7 2026-07-13
ASH6273 - 6 2026-07-10
ASH6188 Mesa Airlines 6 2026-06-05
ASH4079 - 6 2026-07-07
ASH4025 Mesa Airlines 6 2026-06-12
ASH4004 - 6 2026-07-13
ASH4003 - 6 2026-07-02
ASH4002 - 6 2026-07-01
ASH3980 - 6 2026-06-19
ASH6345 Mesa Airlines 5 2026-06-15
ASH6210 Mesa Airlines 5 2026-06-14
ASH6190 Mesa Airlines 5 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ASH4050 - Jul 14, 21:45 UTCJul 14, 23:45 UTC1h 59m
2026-07-14 ASH6254 - Jul 14, 17:30 UTCJul 14, 19:40 UTC2h 10m
2026-07-14 ASH6149 - Jul 14, 14:05 UTCJul 14, 16:35 UTC2h 30m
2026-07-14 ASH4041 - Jul 14, 10:05 UTCJul 14, 11:15 UTC1h 10m
2026-07-14 ASH4041 TUL → IAH Jul 14, 10:15 UTCJul 14, 11:29 UTC1h 14m
2026-07-14 ASH6269 - Jul 14, 01:30 UTCJul 14, 02:35 UTC1h 5m
2026-07-13 ASH4004 - Jul 13, 22:35 UTCJul 13, 23:10 UTC35m
2026-07-13 ASH4004 AUS → IAH Jul 13, 22:25 UTCJul 13, 23:08 UTC43m
2026-07-13 ASH6118 - Jul 13, 20:10 UTCJul 13, 20:40 UTC30m
2026-07-13 ASH6118 IAH → AUS Jul 13, 19:55 UTCJul 13, 20:39 UTC44m
2026-07-13 ASH6213 - Jul 13, 16:25 UTCJul 13, 18:50 UTC2h 25m
2026-07-13 ASH6214 - Jul 13, 13:30 UTCJul 13, 15:05 UTC1h 35m
2026-07-13 ASH6282 - Jul 13, 01:15 UTCJul 13, 04:10 UTC2h 55m
2026-07-12 ASH6207 - Jul 12, 19:50 UTCJul 12, 22:30 UTC2h 40m
2026-07-12 ASH3989 - Jul 12, 16:10 UTCJul 12, 18:10 UTC2h 0m
2026-07-12 ASH6162 - Jul 12, 12:55 UTCJul 12, 14:45 UTC1h 50m
2026-07-12 ASH4000 - Jul 12, 10:25 UTCJul 12, 11:05 UTC40m
2026-07-12 ASH4000 LFT → IAH Jul 12, 10:31 UTCJul 12, 11:06 UTC35m
2026-07-12 ASH4037 - Jul 12, 03:01 UTCJul 12, 03:35 UTC35m
2026-07-12 ASH3993 - Jul 12, 00:45 UTCJul 12, 01:20 UTC35m
2026-07-11 ASH4054 - Jul 11, 21:40 UTCJul 11, 22:10 UTC30m
2026-07-11 ASH4045 - Jul 11, 18:10 UTCJul 11, 20:30 UTC2h 20m
2026-07-11 ASH4045 TUS → IAH Jul 11, 18:11 UTCJul 11, 20:28 UTC2h 17m
2026-07-11 ASH6219 - Jul 11, 14:40 UTCJul 11, 16:40 UTC2h 0m
2026-07-11 ASH4053 - Jul 11, 12:30 UTCJul 11, 13:10 UTC40m
2026-07-11 ASH4037 - Jul 11, 03:01 UTCJul 11, 03:35 UTC35m
2026-07-10 ASH6284 - Jul 10, 23:45 UTCJul 11, 01:25 UTC1h 40m
2026-07-10 ASH6160 - Jul 10, 20:45 UTCJul 10, 22:10 UTC1h 25m
2026-07-10 ASH6160 IAH → STL Jul 10, 20:48 UTCJul 10, 22:22 UTC1h 34m
2026-07-10 ASH6296 - Jul 10, 17:20 UTCJul 10, 19:35 UTC2h 15m
2026-07-10 ASH6148 - Jul 10, 13:40 UTCJul 10, 15:55 UTC2h 15m
2026-07-10 ASH6273 - Jul 10, 00:20 UTCJul 10, 01:10 UTC50m
2026-07-09 ASH6173 - Jul 9, 21:55 UTCJul 9, 22:50 UTC55m
2026-07-09 ASH6173 IAH → MSY Jul 9, 21:59 UTCJul 9, 22:47 UTC48m
2026-07-09 ASH4030 - Jul 9, 18:25 UTCJul 9, 20:15 UTC1h 50m
2026-07-09 ASH4030 COS → IAH Jul 9, 18:24 UTCJul 9, 20:12 UTC1h 48m
2026-07-09 ASH6122 - Jul 9, 15:10 UTCJul 9, 17:05 UTC1h 55m
2026-07-09 ASH4008 - Jul 9, 11:40 UTCJul 9, 13:00 UTC1h 20m
2026-07-09 ASH4022 - Jul 9, 01:10 UTCJul 9, 02:30 UTC1h 20m
2026-07-08 ASH6231 - Jul 8, 21:00 UTCJul 8, 23:30 UTC2h 30m
2026-07-08 ASH4057 - Jul 8, 17:10 UTCJul 8, 19:40 UTC2h 30m
2026-07-08 ASH6287 - Jul 8, 14:10 UTCJul 8, 15:20 UTC1h 10m
2026-07-07 ASH6195 - Jul 7, 23:35 UTCJul 8, 00:50 UTC1h 15m
2026-07-07 ASH3992 - Jul 7, 20:20 UTCJul 7, 22:20 UTC2h 0m
2026-07-07 ASH3992 ATL → IAH Jul 7, 20:23 UTCJul 7, 22:18 UTC1h 55m
2026-07-07 ASH4079 - Jul 7, 17:15 UTCJul 7, 18:50 UTC1h 35m
2026-07-07 ASH4060 - Jul 7, 14:35 UTCJul 7, 15:15 UTC40m
2026-07-07 ASH6157 - Jul 7, 12:35 UTCJul 7, 13:10 UTC35m
2026-07-07 ASH4026 - Jul 7, 11:00 UTCJul 7, 11:40 UTC40m
2026-07-07 ASH6128 - Jul 7, 03:10 UTCJul 7, 03:50 UTC40m

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 N89304 page for operator, model, and routing details .

Mode-S AC52EE frequently asked

What is Mode-S code AC52EE?
AC52EE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N89304.
Where is Mode-S AC52EE registered?
Mode-S code AC52EE 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 AC52EE broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC52EE, octal 53051356, decimal 11,293,422.
What flights does AC52EE operate?
Mode-S AC52EE has broadcast 20 distinct callsigns, including ASH6155, ASH6128, ASH4026, ASH4000, ASH6353.