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sensors Mode-S transponder

AC2B8E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N88310 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC2B8E
Octal
53025616
Decimal
11,283,342
Country
US
Tail
N88310
Type
E75L
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
514
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AC2B8E.

Country allocation

The ICAO 24-bit address AC2B8E 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
ASH6213 - 10 2026-07-18
ASH6345 Mesa Airlines 8 2026-07-24
ASH6173 Mesa Airlines 8 2026-07-23
ASH4020 Mesa Airlines 8 2026-07-20
ASH6214 - 7 2026-07-18
ASH4034 - 7 2026-06-29
ASH3986 Mesa Airlines 7 2026-07-24
ASH6351 - 6 2026-07-16
ASH6283 Mesa Airlines 6 2026-06-15
ASH6278 - 6 2026-07-08
ASH6219 - 6 2026-06-15
ASH6157 - 6 2026-07-16
ASH4077 Mesa Airlines 6 2026-05-16
ASH4041 - 6 2026-07-18
ASH4022 - 6 2026-06-24
ASH4002 Mesa Airlines 6 2026-07-21
ASH6266 Mesa Airlines 5 2026-06-13
ASH6255 - 5 2026-07-12
ASH6248 - 5 2026-07-20
ASH6178 - 5 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH4047 IAH → ATL Jul 26, 20:40 UTCJul 26, 21:30 UTC50m
2026-07-26 ASH4048 CVG → IAH Jul 26, 17:25 UTCJul 26, 19:20 UTC1h 55m
2026-07-26 ASHH6241 - Jul 26, 13:50 UTCJul 26, 16:00 UTC2h 10m
2026-07-25 ASHH6225 - Jul 25, 23:15 UTCJul 26, 01:05 UTC1h 50m
2026-07-25 ASHH6124 - Jul 25, 20:05 UTCJul 25, 21:35 UTC1h 30m
2026-07-25 ASH6152 - Jul 25, 17:20 UTCJul 25, 18:55 UTC1h 35m
2026-07-25 ASH4005 SDF → IAH Jul 25, 13:50 UTCJul 25, 15:25 UTC1h 35m
2026-07-25 ASH6123 PHL → IAH Jul 25, 00:05 UTCJul 25, 01:35 UTC1h 30m
2026-07-24 ASH3986 IAD → DTW Jul 24, 20:25 UTCJul 24, 22:20 UTC1h 55m
2026-07-24 ASH6345 STL → IAH Jul 24, 17:35 UTCJul 24, 19:25 UTC1h 50m
2026-07-24 ASH3994 - Jul 24, 14:25 UTCJul 24, 16:00 UTC1h 35m
2026-07-24 ASH4010 OKC → IAH Jul 24, 03:05 UTCJul 24, 04:15 UTC1h 10m
2026-07-24 ASH6273 IAH → MSP Jul 24, 00:30 UTCJul 24, 01:20 UTC50m
2026-07-24 ASH6273 IAH → MSP Jul 24, 00:28 UTCJul 24, 01:17 UTC49m
2026-07-23 ASH6173 BDL → IAD Jul 23, 21:55 UTCJul 23, 22:45 UTC50m
2026-07-23 ASH4061 - Jul 23, 19:25 UTCJul 23, 20:25 UTC1h 0m
2026-07-23 ASH6338 - Jul 23, 17:05 UTCJul 23, 18:05 UTC1h 0m
2026-07-23 ASH4066 IAD → LGA Jul 23, 14:35 UTCJul 23, 15:40 UTC1h 5m
2026-07-22 ASH6150 BOS → IAD Jul 22, 23:40 UTCJul 23, 00:20 UTC40m
2026-07-22 ASH6124 - Jul 22, 20:05 UTCJul 22, 21:35 UTC1h 30m
2026-07-22 ASH6152 - Jul 22, 17:25 UTCJul 22, 19:00 UTC1h 35m
2026-07-22 ASH6287 - Jul 22, 14:05 UTCJul 22, 15:15 UTC1h 10m
2026-07-21 ASH6195 BDL → IAD Jul 21, 23:35 UTCJul 22, 00:50 UTC1h 15m
2026-07-21 ASH4002 IAH → OKC Jul 21, 18:50 UTCJul 21, 20:15 UTC1h 25m
2026-07-21 ASH4002 IAH → OKC Jul 21, 18:50 UTCJul 21, 20:09 UTC1h 19m
2026-07-21 ASH6309 - Jul 21, 16:05 UTCJul 21, 17:15 UTC1h 10m
2026-07-21 ASH6163 - Jul 21, 13:20 UTCJul 21, 14:45 UTC1h 25m
2026-07-21 ASH4009 - Jul 21, 01:10 UTCJul 21, 02:20 UTC1h 10m
2026-07-21 ASH4009 IAH → ELP Jul 21, 01:15 UTCJul 21, 02:44 UTC1h 29m
2026-07-20 ASH4020 IAH → OKC Jul 20, 21:10 UTCJul 20, 23:05 UTC1h 55m
2026-07-20 ASH6197 CRP → IAH Jul 20, 17:35 UTCJul 20, 19:45 UTC2h 10m
2026-07-20 ASH6260 MAF → IAH Jul 20, 14:40 UTCJul 20, 15:50 UTC1h 10m
2026-07-20 ASH6260 MAF → IAH Jul 20, 14:50 UTCJul 20, 15:45 UTC55m
2026-07-20 ASH6263 IAH → MAF Jul 20, 12:30 UTCJul 20, 13:35 UTC1h 5m
2026-07-20 ASH4019 BHM → IAH Jul 20, 10:10 UTCJul 20, 11:05 UTC55m
2026-07-20 ASH6248 - Jul 20, 03:05 UTCJul 20, 03:30 UTC25m
2026-07-20 ASH6248 IAH → MFE Jul 20, 03:05 UTCJul 20, 04:03 UTC58m
2026-07-20 ASH6273 - Jul 20, 00:20 UTCJul 20, 01:10 UTC50m
2026-07-20 ASH6273 MSY → IAH Jul 20, 00:28 UTCJul 20, 01:03 UTC35m
2026-07-19 ASH6173 BDL → IAD Jul 19, 21:55 UTCJul 19, 22:45 UTC50m
2026-07-19 ASH6296 - Jul 19, 17:05 UTCJul 19, 19:25 UTC2h 20m
2026-07-19 ASH6148 - Jul 19, 13:25 UTCJul 19, 15:50 UTC2h 25m
2026-07-18 ASH4004 SDF → IAD Jul 18, 21:35 UTCJul 18, 22:10 UTC35m
2026-07-18 ASH6118 - Jul 18, 19:25 UTCJul 18, 19:55 UTC30m
2026-07-18 ASH6118 IAH → AUS Jul 18, 19:39 UTCJul 18, 19:56 UTC17m
2026-07-18 ASH6213 STL → IAH Jul 18, 16:25 UTCJul 18, 17:45 UTC1h 20m
2026-07-18 ASH6213 - Jul 18, 16:15 UTCJul 18, 17:45 UTC1h 30m
2026-07-18 ASH6214 - Jul 18, 13:30 UTCJul 18, 15:05 UTC1h 35m
2026-07-18 ASH4041 - Jul 18, 10:05 UTCJul 18, 11:10 UTC1h 5m
2026-07-18 ASH6269 - Jul 18, 01:34 UTCJul 18, 02:35 UTC1h 0m

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 N88310 page for operator, model, and routing details .

Mode-S AC2B8E frequently asked

What is Mode-S code AC2B8E?
AC2B8E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N88310.
Where is Mode-S AC2B8E registered?
Mode-S code AC2B8E 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 AC2B8E broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC2B8E, octal 53025616, decimal 11,283,342.
What flights does AC2B8E operate?
Mode-S AC2B8E has broadcast 20 distinct callsigns, including ASH6213, ASH6345, ASH6173, ASH4020, ASH6214.