Apparatus

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sensors Mode-S transponder

ABB5A3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N85356 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
ABB5A3
Octal
52732643
Decimal
11,253,155
Country
US
Tail
N85356
Type
E75L
No current signal · last broadcast 2d ago
Flights observed
282
Distinct callsigns
20
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S ABB5A3.

Country allocation

The ICAO 24-bit address ABB5A3 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
ASH6175 Mesa Airlines 9 2026-05-20
ASH6294 Mesa Airlines 8 2026-05-20
ASH6226 Mesa Airlines 8 2026-06-04
ASH3994 Mesa Airlines 7 2026-05-31
ASH4052 Mesa Airlines 6 2026-06-04
ASH4061 Mesa Airlines 5 2026-06-04
ASH3999 Mesa Airlines 5 2026-05-08
ASH3985 Mesa Airlines 5 2026-05-24
ASH6360 Mesa Airlines 4 2026-05-20
ASH6271 Mesa Airlines 4 2026-05-09
ASH6251 Mesa Airlines 4 2026-05-07
ASH6244 Mesa Airlines 4 2026-06-07
ASH6217 Mesa Airlines 4 2026-04-29
ASH6188 Mesa Airlines 4 2026-06-03
ASH6138 Mesa Airlines 4 2026-06-01
ASH6118 Mesa Airlines 4 2026-06-01
ASH4024 Mesa Airlines 4 2026-05-24
ASH4004 Mesa Airlines 4 2026-06-01
ASH6326 Mesa Airlines 3 2026-05-27
ASH6312 Mesa Airlines 3 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 ASH3236 IAD → SLN Jul 11, 15:00 UTCJul 11, 17:33 UTC2h 33m
2026-07-11 ASH3236 - Jul 11, 14:45 UTCJul 11, 17:30 UTC2h 45m
2026-07-11 ASH3234 - Jul 11, 12:45 UTCJul 11, 13:50 UTC1h 5m
2026-06-07 ASH3234 IAD → BDL Jun 7, 12:35 UTCJun 7, 13:40 UTC1h 5m
2026-06-07 ASH6244 IAD → ORF Jun 7, 02:19 UTCJun 7, 03:10 UTC50m
2026-06-07 ASH6244 IAD → ORF Jun 7, 01:30 UTCJun 7, 03:05 UTC1h 35m
2026-06-06 ASH4077 IAH → ABQ Jun 6, 22:05 UTCJun 6, 22:50 UTC45m
2026-06-06 ASH4048 CVG → IAH Jun 6, 19:44 UTCJun 6, 20:30 UTC45m
2026-06-06 ASH4048 CVG → IAH Jun 6, 19:33 UTCJun 6, 20:29 UTC56m
2026-06-06 ASH4015 IAH → MAF Jun 6, 17:05 UTCJun 6, 17:40 UTC35m
2026-06-06 ASH4015 IAH → MAF Jun 6, 17:16 UTCJun 6, 17:39 UTC23m
2026-06-06 ASH6242 IAD → SDF Jun 6, 15:10 UTCJun 6, 15:59 UTC50m
2026-06-06 ASH6116 LGA → IAH Jun 6, 12:35 UTCJun 6, 13:20 UTC45m
2026-06-05 ASH6355 IAH → SAV Jun 5, 23:30 UTCJun 6, 00:50 UTC1h 20m
2026-06-05 ASH6355 IAH → SAV Jun 5, 20:10 UTCJun 5, 22:05 UTC1h 55m
2026-06-05 ASH4011 CLT → IAD Jun 5, 17:10 UTCJun 5, 18:35 UTC1h 25m
2026-06-05 ASH6186 IAH → MAF Jun 5, 15:05 UTCJun 5, 16:15 UTC1h 10m
2026-06-05 ASH6245 MTY → IAH Jun 5, 11:35 UTCJun 5, 12:35 UTC1h 0m
2026-06-04 ASH6226 IAH → MTY Jun 4, 22:10 UTCJun 4, 23:20 UTC1h 10m
2026-06-04 ASH6226 IAH → MTY Jun 4, 22:16 UTCJun 4, 23:16 UTC1h 0m
2026-06-04 ASH4061 SAT → IAH Jun 4, 19:25 UTCJun 4, 20:45 UTC1h 20m
2026-06-04 ASH4061 SAT → IAH Jun 4, 19:28 UTCJun 4, 20:42 UTC1h 14m
2026-06-04 ASH6338 IAH → ELP Jun 4, 17:05 UTCJun 4, 18:05 UTC1h 0m
2026-06-04 ASH6266 SDF → IAH Jun 4, 10:25 UTCJun 4, 12:20 UTC1h 55m
2026-06-04 ASH4052 SAT → IAH Jun 4, 01:45 UTCJun 4, 03:40 UTC1h 55m
2026-06-03 ASH6124 IAD → BDL Jun 3, 22:00 UTCJun 3, 23:35 UTC1h 35m
2026-06-03 ASH6152 BDL → IAD Jun 3, 17:25 UTCJun 3, 18:55 UTC1h 30m
2026-06-03 ASH6188 RIC → IAH Jun 3, 14:55 UTCJun 3, 15:55 UTC1h 0m
2026-06-03 ASH6188 RIC → IAH Jun 3, 14:43 UTCJun 3, 15:55 UTC1h 12m
2026-06-03 ASH4044 CLE → IAD Jun 3, 01:10 UTCJun 3, 02:20 UTC1h 10m
2026-06-03 ASH4044 CLE → IAD Jun 3, 00:22 UTCJun 3, 02:29 UTC2h 7m
2026-06-02 ASH6259 IAD → DTW Jun 2, 22:45 UTCJun 2, 23:15 UTC30m
2026-06-02 ASH6259 IAD → DTW Jun 2, 20:15 UTCJun 2, 23:15 UTC3h 0m
2026-06-02 ASH6259 IAD → DTW Jun 2, 20:10 UTCJun 2, 22:26 UTC2h 16m
2026-06-02 ASH6188 RIC → IAH Jun 2, 17:15 UTCJun 2, 19:00 UTC1h 45m
2026-06-02 ASH6188 RIC → IAH Jun 2, 17:13 UTCJun 2, 19:01 UTC1h 48m
2026-06-02 ASH4003 IAH → MEM Jun 2, 14:40 UTCJun 2, 16:00 UTC1h 20m
2026-06-01 ASH6167 IAH → LGA Jun 1, 23:45 UTCJun 2, 00:50 UTC1h 5m
2026-06-01 ASH4004 SDF → IAD Jun 1, 21:50 UTCJun 1, 22:25 UTC35m
2026-06-01 ASH4004 SDF → IAD Jun 1, 21:25 UTCJun 1, 22:23 UTC58m
2026-06-01 ASH6118 COS → IAH Jun 1, 19:35 UTCJun 1, 20:00 UTC25m
2026-06-01 ASH6118 COS → IAH Jun 1, 19:39 UTCJun 1, 20:01 UTC22m
2026-06-01 ASH6299 IAH → MSY Jun 1, 16:20 UTCJun 1, 18:05 UTC1h 45m
2026-06-01 ASH4037 IAH → MCI Jun 1, 13:20 UTCJun 1, 15:05 UTC1h 45m
2026-06-01 ASH4031 DFW → IAH Jun 1, 11:30 UTCJun 1, 12:10 UTC40m
2026-06-01 ASH6138 MSY → IAD Jun 1, 01:15 UTCJun 1, 01:45 UTC30m
2026-06-01 ASH6138 MSY → IAD Jun 1, 01:08 UTCJun 1, 01:48 UTC40m
2026-05-31 ASH3994 CHS → IAH May 31, 21:25 UTCMay 31, 22:45 UTC1h 20m
2026-05-31 ASH3994 CHS → IAH May 31, 21:30 UTCMay 31, 22:47 UTC1h 17m
2026-05-30 ASH6231 RIC → IAH May 30, 21:20 UTCMay 31, 00:00 UTC2h 40m

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 N85356 page for operator, model, and routing details .

Mode-S ABB5A3 frequently asked

What is Mode-S code ABB5A3?
ABB5A3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N85356.
Where is Mode-S ABB5A3 registered?
Mode-S code ABB5A3 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 ABB5A3 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB5A3, octal 52732643, decimal 11,253,155.
What flights does ABB5A3 operate?
Mode-S ABB5A3 has broadcast 20 distinct callsigns, including ASH6175, ASH6294, ASH6226, ASH3994, ASH4052.