Apparatus

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sensors Mode-S transponder

AC2BFD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N88346 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC2BFD
Octal
53025775
Decimal
11,283,453
Country
US
Tail
N88346
Type
E75L
Broadcasting now · callsign ASH6148 · 25,000 ft
Flights observed
462
Distinct callsigns
20
Country
US
Last broadcast
1d ago

Current position

AC2BFD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC2BFD 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
ASH6318 Mesa Airlines 8 2026-07-20
ASH6226 Mesa Airlines 8 2026-06-28
ASH6148 Mesa Airlines 8 2026-07-26
ASH6153 - 7 2026-06-18
ASH4050 Mesa Airlines 7 2026-07-22
ASH6319 Mesa Airlines 6 2026-07-20
ASH6296 Mesa Airlines 6 2026-07-26
ASH6289 - 6 2026-07-15
ASH6182 - 6 2026-07-18
ASH6147 Mesa Airlines 6 2026-07-22
ASH6355 - 5 2026-07-16
ASH6266 Mesa Airlines 5 2026-07-23
ASH6253 Mesa Airlines 5 2026-06-21
ASH6189 - 5 2026-06-21
ASH6181 - 5 2026-07-18
ASH6165 Mesa Airlines 5 2026-07-16
ASH6127 - 5 2026-06-22
ASH4064 - 5 2026-07-10
ASH4045 - 5 2026-07-15
ASH4027 Mesa Airlines 5 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH6296 RDU → IAH Jul 26, 16:55 UTCJul 26, 19:00 UTC2h 5m
2026-07-26 ASH6148 LGA → IAD Jul 26, 13:25 UTCJul 26, 15:45 UTC2h 20m
2026-07-25 ASH6327 MTY → IAH Jul 25, 16:15 UTCJul 25, 17:25 UTC1h 10m
2026-07-25 ASH6222 IAH → MTY Jul 25, 13:00 UTCJul 25, 14:10 UTC1h 10m
2026-07-24 ASH6284 IAH → MFE Jul 24, 23:40 UTCJul 25, 01:10 UTC1h 30m
2026-07-24 ASH6160 BOS → IAD Jul 24, 20:50 UTCJul 24, 22:30 UTC1h 40m
2026-07-24 ASH6296 RDU → IAH Jul 24, 17:05 UTCJul 24, 19:15 UTC2h 10m
2026-07-24 ASH6296 RDU → IAH Jul 24, 17:02 UTCJul 24, 19:32 UTC2h 30m
2026-07-24 ASH6148 LGA → IAD Jul 24, 13:35 UTCJul 24, 16:00 UTC2h 25m
2026-07-24 ASH4019 BHM → IAH Jul 24, 10:10 UTCJul 24, 11:05 UTC55m
2026-07-24 ASH6248 IND → IAD Jul 24, 02:55 UTCJul 24, 03:40 UTC45m
2026-07-23 ASH6113 IAH → LGA Jul 23, 23:35 UTCJul 24, 01:10 UTC1h 35m
2026-07-23 ASH3987 IAD → MSP Jul 23, 20:10 UTCJul 23, 21:40 UTC1h 30m
2026-07-23 ASH6125 IAH → LGA Jul 23, 18:15 UTCJul 23, 19:10 UTC55m
2026-07-23 ASH4070 - Jul 23, 15:05 UTCJul 23, 15:55 UTC50m
2026-07-23 ASH6266 SDF → IAH Jul 23, 10:40 UTCJul 23, 12:25 UTC1h 45m
2026-07-22 ASH4050 IAH → SAT Jul 22, 22:05 UTCJul 23, 00:00 UTC1h 55m
2026-07-22 ASH4050 IAH → SAT Jul 22, 21:54 UTCJul 22, 23:55 UTC2h 1m
2026-07-22 ASH4027 CLT → IAD Jul 22, 18:25 UTCJul 22, 20:20 UTC1h 55m
2026-07-22 ASH6147 IAH → CLE Jul 22, 14:45 UTCJul 22, 16:55 UTC2h 10m
2026-07-22 ASH6147 IAH → CLE Jul 22, 14:50 UTCJul 22, 17:02 UTC2h 12m
2026-07-22 ASH6283 IAH → ATL Jul 22, 11:35 UTCJul 22, 13:00 UTC1h 25m
2026-07-22 ASH6283 IAH → ATL Jul 22, 11:34 UTCJul 22, 12:59 UTC1h 25m
2026-07-22 ASH6187 IAD → CVG Jul 22, 02:05 UTCJul 22, 03:40 UTC1h 35m
2026-07-20 ASH6238 - Jul 20, 23:30 UTCJul 21, 14:25 UTC14h 54m
2026-07-20 ASH6319 PXM → IAH Jul 20, 19:00 UTCJul 20, 21:00 UTC2h 0m
2026-07-20 ASH6319 PXM → IAH Jul 20, 18:53 UTCJul 20, 20:57 UTC2h 4m
2026-07-20 ASH6318 IAH → CVG Jul 20, 15:00 UTCJul 20, 16:55 UTC1h 55m
2026-07-20 ASH6318 IAH → CVG Jul 20, 15:09 UTCJul 20, 17:08 UTC1h 59m
2026-07-20 ASH6266 - Jul 20, 10:35 UTCJul 20, 12:30 UTC1h 55m
2026-07-19 ASH4050 - Jul 19, 21:50 UTCJul 19, 23:40 UTC1h 50m
2026-07-19 ASH4050 IAH → SDF Jul 19, 21:54 UTCJul 19, 23:36 UTC1h 42m
2026-07-19 ASH3985 IAD → ATL Jul 19, 19:35 UTCJul 19, 20:20 UTC45m
2026-07-19 ASH4024 - Jul 19, 17:30 UTCJul 19, 18:15 UTC45m
2026-07-19 ASH4029 COS → IAH Jul 19, 13:54 UTCJul 19, 15:33 UTC1h 39m
2026-07-19 ASH4029 - Jul 19, 13:35 UTCJul 19, 15:35 UTC2h 0m
2026-07-19 ASH6126 - Jul 19, 01:10 UTCJul 19, 03:00 UTC1h 50m
2026-07-18 ASH6182 BJX → IAH Jul 18, 21:05 UTCJul 18, 22:39 UTC1h 34m
2026-07-18 ASH6181 - Jul 18, 18:10 UTCJul 18, 19:20 UTC1h 10m
2026-07-18 ASH6250 PNS → IAH Jul 18, 00:19 UTCJul 18, 01:34 UTC1h 15m
2026-07-17 ASH6158 - Jul 17, 22:20 UTCJul 17, 23:14 UTC55m
2026-07-17 ASH6158 IAH → MEM Jul 17, 22:22 UTCJul 17, 23:23 UTC1h 1m
2026-07-17 ASH4046 - Jul 17, 19:30 UTCJul 17, 21:15 UTC1h 45m
2026-07-17 ASH6110 - Jul 17, 17:20 UTCJul 17, 18:19 UTC1h 0m
2026-07-17 ASH6242 LGA → IAD Jul 17, 14:39 UTCJul 17, 15:40 UTC1h 0m
2026-07-17 ASH6116 IAD → LGA Jul 17, 12:35 UTCJul 17, 13:20 UTC45m
2026-07-16 ASH6165 SAV → IAD Jul 16, 23:10 UTCJul 17, 00:25 UTC1h 15m
2026-07-16 ASH6355 - Jul 16, 20:05 UTCJul 16, 22:00 UTC1h 55m
2026-07-16 ASH6355 IAH → SAV Jul 16, 20:14 UTCJul 16, 22:00 UTC1h 46m
2026-07-15 ASH6289 - Jul 15, 22:15 UTCJul 16, 15:10 UTC16h 55m

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 N88346 page for operator, model, and routing details .

Mode-S AC2BFD frequently asked

What is Mode-S code AC2BFD?
AC2BFD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N88346.
Where is Mode-S AC2BFD registered?
Mode-S code AC2BFD 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 AC2BFD broadcasting right now?
Yes. Mode-S AC2BFD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC2BFD, octal 53025775, decimal 11,283,453.
What flights does AC2BFD operate?
Mode-S AC2BFD has broadcast 20 distinct callsigns, including ASH6318, ASH6226, ASH6148, ASH6153, ASH4050.