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sensors Mode-S transponder

AC2B6C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N88301 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC2B6C
Octal
53025554
Decimal
11,283,308
Country
US
Tail
N88301
Type
E75L
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
564
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S AC2B6C.

Country allocation

The ICAO 24-bit address AC2B6C 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
ASH6117 Mesa Airlines 9 2026-07-25
ASH6202 Mesa Airlines 8 2026-06-08
ASH6166 Mesa Airlines 8 2026-07-25
ASH4013 - 8 2026-06-21
ASH6283 - 7 2026-07-17
ASH6178 - 7 2026-07-15
ASH4018 - 7 2026-07-08
ASH6353 - 6 2026-07-21
ASH6312 Mesa Airlines 6 2026-06-09
ASH6296 Mesa Airlines 6 2026-06-17
ASH6235 - 6 2026-07-13
ASH6214 - 6 2026-07-23
ASH6213 - 6 2026-07-23
ASH6195 Mesa Airlines 6 2026-07-25
ASH6162 Mesa Airlines 6 2026-06-14
ASH6145 Mesa Airlines 6 2026-05-07
ASH4031 Mesa Airlines 6 2026-06-04
ASH4015 - 6 2026-07-13
ASH3989 - 6 2026-06-14
ASH3986 Mesa Airlines 6 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH6124 IAD → BDL Jul 26, 20:05 UTCJul 26, 21:35 UTC1h 30m
2026-07-26 ASH6152 - Jul 26, 17:20 UTCJul 26, 18:50 UTC1h 30m
2026-07-26 ASH6287 CMH → IAH Jul 26, 14:05 UTCJul 26, 15:15 UTC1h 10m
2026-07-25 ASH6195 BDL → IAD Jul 25, 23:20 UTCJul 26, 00:25 UTC1h 5m
2026-07-25 ASH6117 IND → IAH Jul 25, 20:10 UTCJul 25, 22:05 UTC1h 55m
2026-07-25 ASH6166 LGA → IAH Jul 25, 17:05 UTCJul 25, 19:05 UTC2h 0m
2026-07-25 ASH6163 - Jul 25, 13:20 UTCJul 25, 14:40 UTC1h 20m
2026-07-24 ASH3983 DTW → IAD Jul 24, 22:10 UTCJul 24, 23:05 UTC55m
2026-07-24 ASH3983 DTW → IAD Jul 24, 22:17 UTCJul 24, 23:36 UTC1h 19m
2026-07-24 ASH6224 LGA → IAH Jul 24, 15:00 UTCJul 24, 16:50 UTC1h 50m
2026-07-24 ASH6224 LGA → IAH Jul 24, 14:01 UTCJul 24, 16:44 UTC2h 43m
2026-07-24 ASH4035 CLT → IAD Jul 24, 00:05 UTCJul 24, 01:55 UTC1h 50m
2026-07-23 ASH6232 LGA → IAH Jul 23, 21:25 UTCJul 23, 22:05 UTC40m
2026-07-23 ASH6232 LGA → IAH Jul 23, 21:33 UTCJul 23, 22:05 UTC32m
2026-07-23 ASH6177 CVG → IAD Jul 23, 19:30 UTCJul 23, 20:05 UTC35m
2026-07-23 ASH6177 CVG → IAD Jul 23, 19:39 UTCJul 23, 20:11 UTC32m
2026-07-23 ASH6213 - Jul 23, 16:25 UTCJul 23, 17:55 UTC1h 30m
2026-07-23 ASH6214 - Jul 23, 13:10 UTCJul 23, 14:55 UTC1h 45m
2026-07-23 ASH3996 - Jul 23, 00:10 UTCJul 23, 01:15 UTC1h 5m
2026-07-23 ASH3996 OKC → IAH Jul 23, 00:20 UTCJul 23, 01:12 UTC52m
2026-07-22 ASH6334 IAH → OKC Jul 22, 21:55 UTCJul 22, 23:00 UTC1h 5m
2026-07-22 ASH6334 IAH → OKC Jul 22, 21:54 UTCJul 22, 22:57 UTC1h 3m
2026-07-22 ASH6151 IAH → LGA Jul 22, 18:30 UTCJul 22, 20:20 UTC1h 50m
2026-07-22 ASH3982 BTR → IAH Jul 22, 15:20 UTCJul 22, 17:05 UTC1h 45m
2026-07-22 ASH4053 IAH → BWI Jul 22, 12:40 UTCJul 22, 13:15 UTC35m
2026-07-22 ASH4053 IAH → BWI Jul 22, 12:30 UTCJul 22, 13:14 UTC44m
2026-07-21 ASH6353 - Jul 21, 23:35 UTCJul 22, 00:10 UTC35m
2026-07-21 ASH6124 - Jul 21, 20:10 UTCJul 21, 21:45 UTC1h 35m
2026-07-21 ASH6152 - Jul 21, 17:20 UTCJul 21, 18:50 UTC1h 30m
2026-07-21 ASH4066 IAD → LGA Jul 21, 14:50 UTCJul 21, 15:45 UTC55m
2026-07-21 ASH4066 IAD → LGA Jul 21, 14:43 UTCJul 21, 15:46 UTC1h 3m
2026-07-20 ASH6150 - Jul 20, 23:35 UTCJul 21, 00:30 UTC55m
2026-07-20 ASH6150 IAH → LIT Jul 20, 23:42 UTCJul 21, 00:35 UTC53m
2026-07-20 ASH6259 IAD → DTW Jul 20, 20:15 UTCJul 20, 22:10 UTC1h 55m
2026-07-20 7203 - Jul 20, 17:05 UTCJul 20, 18:50 UTC1h 45m
2026-07-20 ASH6224 - Jul 20, 13:30 UTCJul 20, 15:20 UTC1h 50m
2026-07-19 ASH4035 - Jul 19, 23:45 UTCJul 20, 01:30 UTC1h 45m
2026-07-19 ASH3986 IAD → DTW Jul 19, 20:30 UTCJul 19, 22:20 UTC1h 50m
2026-07-19 ASH6345 - Jul 19, 17:25 UTCJul 19, 19:10 UTC1h 45m
2026-07-19 ASH4066 IAD → LGA Jul 19, 14:40 UTCJul 19, 15:35 UTC55m
2026-07-18 ASH6150 - Jul 18, 23:40 UTCJul 19, 00:30 UTC50m
2026-07-18 ASH6117 - Jul 18, 20:10 UTCJul 18, 22:00 UTC1h 50m
2026-07-18 ASH6166 - Jul 18, 17:10 UTCJul 18, 18:55 UTC1h 45m
2026-07-18 ASH4009 - Jul 18, 01:15 UTCJul 18, 14:45 UTC13h 31m
2026-07-17 ASH4038 - Jul 17, 21:34 UTCJul 17, 23:30 UTC1h 55m
2026-07-17 ASH6139 - Jul 17, 17:40 UTCJul 17, 19:25 UTC1h 45m
2026-07-17 ASH6139 IAH → GSP Jul 17, 17:52 UTCJul 17, 19:28 UTC1h 36m
2026-07-17 ASH6283 - Jul 17, 11:25 UTCJul 17, 13:00 UTC1h 35m
2026-07-17 ASH6187 - Jul 17, 02:20 UTCJul 17, 03:55 UTC1h 35m
2026-07-16 ASH4001 - Jul 16, 23:59 UTCJul 17, 01:00 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 N88301 page for operator, model, and routing details .

Mode-S AC2B6C frequently asked

What is Mode-S code AC2B6C?
AC2B6C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N88301.
Where is Mode-S AC2B6C registered?
Mode-S code AC2B6C 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 AC2B6C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC2B6C, octal 53025554, decimal 11,283,308.
What flights does AC2B6C operate?
Mode-S AC2B6C has broadcast 20 distinct callsigns, including ASH6117, ASH6202, ASH6166, ASH4013, ASH6283.