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sensors Mode-S transponder

ABB5A1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N85354 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
ABB5A1
Octal
52732641
Decimal
11,253,153
Country
US
Tail
N85354
Type
E75L
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
404
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S ABB5A1.

Country allocation

The ICAO 24-bit address ABB5A1 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
ASH6366 Mesa Airlines 7 2026-07-24
ASH6244 - 6 2026-07-11
ASH6113 Mesa Airlines 6 2026-05-25
ASH4064 - 6 2026-07-23
ASH4023 - 6 2026-07-12
ASH3995 - 6 2026-07-20
ASH3990 Mesa Airlines 6 2026-05-26
ASH6294 Mesa Airlines 5 2026-05-10
ASH6232 Mesa Airlines 5 2026-05-29
ASH6217 Mesa Airlines 5 2026-05-15
ASH6128 Mesa Airlines 5 2026-07-21
ASH4077 - 5 2026-07-11
ASH4067 Mesa Airlines 5 2026-05-26
ASH4065 Mesa Airlines 5 2026-05-29
ASH4014 Mesa Airlines 5 2026-05-21
ASH3980 Mesa Airlines 5 2026-07-24
ASH6367 Mesa Airlines 4 2026-05-15
ASH6318 - 4 2026-04-18
ASH6292 Mesa Airlines 4 2026-05-16
ASH6211 Mesa Airlines 4 2026-06-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH3992 - Jul 26, 20:15 UTCJul 26, 21:45 UTC1h 30m
2026-07-26 ASH4079 IAH → COS Jul 26, 17:10 UTCJul 26, 18:50 UTC1h 40m
2026-07-25 ASH6289 IAH → SAT Jul 25, 22:20 UTCJul 26, 14:50 UTC16h 31m
2026-07-25 ASH6278 AUS → IAD Jul 25, 16:55 UTCJul 25, 17:35 UTC40m
2026-07-25 ASH6201 IAH → PHL Jul 25, 15:00 UTCJul 25, 15:35 UTC35m
2026-07-25 ASH6201 IAH → PHL Jul 25, 14:59 UTCJul 25, 15:36 UTC37m
2026-07-25 ASH4025 IAH → BHM Jul 25, 10:25 UTCJul 25, 13:20 UTC2h 55m
2026-07-24 ASH3991 IAH → CHS Jul 24, 23:20 UTCJul 25, 02:05 UTC2h 45m
2026-07-24 ASH6310 SDF → IAH Jul 24, 19:45 UTCJul 24, 21:35 UTC1h 50m
2026-07-24 ASH3980 ABQ → IAH Jul 24, 17:05 UTCJul 24, 18:20 UTC1h 15m
2026-07-24 ASH6366 IAD → JAX Jul 24, 14:05 UTCJul 24, 15:20 UTC1h 15m
2026-07-23 ASH3981 BHM → IAH Jul 23, 22:23 UTCJul 23, 23:41 UTC1h 18m
2026-07-23 ASH3981 BHM → IAH Jul 23, 22:15 UTCJul 23, 23:30 UTC1h 15m
2026-07-23 ASH6190 YOW → IAD Jul 23, 18:55 UTCJul 23, 20:00 UTC1h 5m
2026-07-23 ASH4064 - Jul 23, 15:05 UTCJul 23, 17:20 UTC2h 15m
2026-07-23 ASH4064 IAH → DTW Jul 23, 15:05 UTCJul 23, 17:23 UTC2h 18m
2026-07-23 ASH4049 IAH → HRL Jul 23, 11:05 UTCJul 23, 12:55 UTC1h 50m
2026-07-23 ASH4033 LIT → IAH Jul 23, 01:20 UTCJul 23, 03:15 UTC1h 55m
2026-07-22 ASH6221 ACA → IAH Jul 22, 18:45 UTCJul 22, 20:45 UTC2h 0m
2026-07-22 ASH6221 ACA → IAH Jul 22, 18:53 UTCJul 22, 20:43 UTC1h 50m
2026-07-22 ASH6218 IAH → ACA Jul 22, 15:10 UTCJul 22, 17:00 UTC1h 50m
2026-07-22 ASH6245 MTY → IAH Jul 22, 11:40 UTCJul 22, 12:45 UTC1h 5m
2026-07-21 ASH6226 IAH → MTY Jul 21, 21:45 UTCJul 21, 22:55 UTC1h 10m
2026-07-21 ASH6226 IAH → MTY Jul 21, 21:52 UTCJul 21, 22:52 UTC1h 0m
2026-07-21 ASH4061 - Jul 21, 19:30 UTCJul 21, 20:35 UTC1h 5m
2026-07-21 ASH6338 - Jul 21, 17:05 UTCJul 21, 18:05 UTC1h 0m
2026-07-21 ASH4031 DFW → IAH Jul 21, 11:30 UTCJul 21, 12:10 UTC40m
2026-07-21 ASH6128 LGA → IAD Jul 21, 03:05 UTCJul 21, 03:40 UTC35m
2026-07-21 ASH6128 LGA → IAD Jul 21, 03:11 UTCJul 21, 03:37 UTC26m
2026-07-20 ASH4032 IAH → DFW Jul 20, 22:50 UTCJul 21, 01:05 UTC2h 14m
2026-07-20 ASH6131 - Jul 20, 19:10 UTCJul 20, 21:30 UTC2h 20m
2026-07-20 ASH6251 DTW → IAH Jul 20, 15:05 UTCJul 20, 17:25 UTC2h 20m
2026-07-20 ASH6137 IAD → PVD Jul 20, 12:56 UTCJul 20, 13:50 UTC54m
2026-07-20 ASH6137 IAD → PVD Jul 20, 12:50 UTCJul 20, 13:50 UTC1h 0m
2026-07-20 ASH4058 IAH → JAN Jul 20, 10:15 UTCJul 20, 11:20 UTC1h 5m
2026-07-20 ASH3995 - Jul 20, 02:25 UTCJul 20, 03:25 UTC1h 0m
2026-07-20 ASH3995 IAD → DTW Jul 20, 02:28 UTCJul 20, 03:27 UTC59m
2026-07-20 ASH3999 - Jul 20, 00:20 UTCJul 20, 01:35 UTC1h 15m
2026-07-19 ASH3999 BDL → IAD Jul 19, 23:58 UTCJul 20, 01:32 UTC1h 34m
2026-07-19 ASH4059 - Jul 19, 22:15 UTCJul 19, 23:10 UTC55m
2026-07-19 ASH6159 - Jul 19, 19:00 UTCJul 19, 20:15 UTC1h 15m
2026-07-19 ASH6159 PVD → IAD Jul 19, 19:00 UTCJul 19, 20:11 UTC1h 11m
2026-07-19 ASH6262 - Jul 19, 16:45 UTCJul 19, 17:40 UTC55m
2026-07-19 ASH6366 SAV → IAD Jul 19, 14:10 UTCJul 19, 15:25 UTC1h 15m
2026-07-18 ASH6111 - Jul 18, 23:40 UTCJul 19, 01:35 UTC1h 55m
2026-07-18 ASH6111 IAH → SAV Jul 18, 23:50 UTCJul 19, 01:34 UTC1h 44m
2026-07-18 ASH6259 IAD → DTW Jul 18, 20:15 UTCJul 18, 22:05 UTC1h 50m
2026-07-18 ASH6188 - Jul 18, 17:05 UTCJul 18, 18:50 UTC1h 45m
2026-07-18 ASH4005 - Jul 18, 13:50 UTCJul 18, 15:25 UTC1h 35m
2026-07-17 ASH6123 PHL → IAH Jul 17, 23:39 UTCJul 18, 01:10 UTC1h 30m

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 N85354 page for operator, model, and routing details .

Mode-S ABB5A1 frequently asked

What is Mode-S code ABB5A1?
ABB5A1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N85354.
Where is Mode-S ABB5A1 registered?
Mode-S code ABB5A1 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 ABB5A1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABB5A1, octal 52732641, decimal 11,253,153.
What flights does ABB5A1 operate?
Mode-S ABB5A1 has broadcast 20 distinct callsigns, including ASH6366, ASH6244, ASH6113, ASH4064, ASH4023.