Apparatus

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sensors Mode-S transponder

AC045E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N87339 · EMBRAER ERJ-170-200 (long wing) · operated by UNITED AIRLINES INC

Hex
AC045E
Octal
53002136
Decimal
11,273,310
Country
US
Tail
N87339
Type
E75L
Broadcasting now · callsign ASH6310 · 13,875 ft
Flights observed
522
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:55 UTC

Current position

AC045E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AC045E 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
ASH6128 Mesa Airlines 11 2026-07-23
ASH6181 - 10 2026-07-23
ASH6124 Mesa Airlines 10 2026-06-20
ASH6289 - 9 2026-07-19
ASH6288 - 9 2026-07-18
ASH6245 Mesa Airlines 8 2026-07-21
ASH6226 Mesa Airlines 8 2026-07-20
ASH6182 Mesa Airlines 8 2026-07-23
ASH4050 - 8 2026-06-29
ASH6338 Mesa Airlines 7 2026-06-09
ASH6238 - 7 2026-07-04
ASH6237 - 7 2026-07-03
ASH6152 Mesa Airlines 7 2026-06-20
ASH4075 Mesa Airlines 7 2026-05-19
ASH3983 Mesa Airlines 7 2026-07-19
ASH6154 Mesa Airlines 6 2026-06-13
ASH6151 Mesa Airlines 6 2026-07-20
ASH6147 - 6 2026-07-18
ASH6131 - 6 2026-07-22
ASH4027 - 6 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ASH6215 IAH → MKE Jul 26, 19:40 UTCJul 26, 20:55 UTC1h 15m
2026-07-26 ASH6205 PWM → IAD Jul 26, 15:35 UTCJul 26, 16:45 UTC1h 10m
2026-07-26 ASH6205 PWM → IAD Jul 26, 15:30 UTCJul 26, 17:29 UTC1h 59m
2026-07-26 ASH4049 IAH → HRL Jul 26, 11:15 UTCJul 26, 13:05 UTC1h 50m
2026-07-26 ASH4033 LIT → IAH Jul 26, 01:20 UTCJul 26, 03:20 UTC2h 0m
2026-07-25 ASH6164 BDL → IAD Jul 25, 20:55 UTCJul 25, 23:15 UTC2h 20m
2026-07-25 ASH6261 PWM → IAD Jul 25, 17:15 UTCJul 25, 19:45 UTC2h 30m
2026-07-25 ASH6261 PWM → IAD Jul 25, 17:13 UTCJul 25, 19:46 UTC2h 33m
2026-07-24 ASH6329 IAH → ELP Jul 24, 21:35 UTCJul 24, 23:35 UTC2h 0m
2026-07-24 ASH6295 TUL → IAH Jul 24, 17:30 UTCJul 24, 20:00 UTC2h 30m
2026-07-24 ASH6260 MAF → IAH Jul 24, 14:50 UTCJul 24, 16:00 UTC1h 10m
2026-07-24 ASH6263 IAH → MAF Jul 24, 12:30 UTCJul 24, 13:30 UTC1h 0m
2026-07-23 ASH6182 RDU → IAD Jul 23, 21:25 UTCJul 23, 22:40 UTC1h 15m
2026-07-23 ASH6181 - Jul 23, 17:40 UTCJul 23, 18:55 UTC1h 15m
2026-07-23 ASH6181 IAH → BJX Jul 23, 17:47 UTCJul 23, 19:35 UTC1h 48m
2026-07-23 ASH6260 MAF → IAH Jul 23, 14:55 UTCJul 23, 16:05 UTC1h 10m
2026-07-23 ASH6263 IAH → MAF Jul 23, 12:30 UTCJul 23, 13:30 UTC1h 0m
2026-07-23 ASH4026 - Jul 23, 10:30 UTCJul 23, 11:05 UTC35m
2026-07-23 ASH6128 LGA → IAD Jul 23, 03:10 UTCJul 23, 03:45 UTC35m
2026-07-23 ASH6128 LGA → IAD Jul 23, 03:11 UTCJul 23, 03:40 UTC29m
2026-07-22 ASH4032 IAH → DFW Jul 22, 22:55 UTCJul 23, 01:40 UTC2h 45m
2026-07-22 ASH6131 - Jul 22, 19:20 UTCJul 22, 21:35 UTC2h 15m
2026-07-22 ASH6131 IAH → DTW Jul 22, 19:16 UTCJul 22, 21:34 UTC2h 18m
2026-07-22 ASH6251 DTW → IAH Jul 22, 15:40 UTCJul 22, 18:00 UTC2h 20m
2026-07-22 ASH3244 CMH → XNA Jul 22, 01:05 UTCJul 22, 02:25 UTC1h 20m
2026-07-22 ASH3244 CMH → XNA Jul 22, 00:44 UTCJul 22, 02:26 UTC1h 42m
2026-07-21 ASH3242 ELP → TUL Jul 21, 20:50 UTCJul 21, 22:00 UTC1h 10m
2026-07-21 ASH4064 - Jul 21, 14:55 UTCJul 21, 17:25 UTC2h 30m
2026-07-21 ASH6245 MTY → IAH Jul 21, 11:45 UTCJul 21, 13:00 UTC1h 15m
2026-07-21 ASH6245 MTY → IAH Jul 21, 11:39 UTCJul 21, 12:53 UTC1h 14m
2026-07-20 ASH6226 IAH → MTY Jul 20, 21:35 UTCJul 20, 22:45 UTC1h 10m
2026-07-20 ASH6151 IAH → LGA Jul 20, 18:25 UTCJul 20, 20:10 UTC1h 45m
2026-07-20 ASH6151 IAH → LGA Jul 20, 18:27 UTCJul 20, 20:06 UTC1h 39m
2026-07-20 ASH3982 BTR → IAH Jul 20, 15:20 UTCJul 20, 17:00 UTC1h 40m
2026-07-20 ASH6303 - Jul 20, 12:00 UTCJul 20, 13:40 UTC1h 40m
2026-07-19 ASH3983 DTW → IAD Jul 19, 22:15 UTCJul 19, 23:30 UTC1h 15m
2026-07-19 ASH3983 DTW → IAD Jul 19, 22:17 UTCJul 19, 23:46 UTC1h 29m
2026-07-19 ASH4002 - Jul 19, 19:00 UTCJul 19, 20:20 UTC1h 20m
2026-07-19 ASH6309 - Jul 19, 16:15 UTCJul 19, 17:25 UTC1h 10m
2026-07-19 ASH6289 - Jul 19, 13:35 UTCJul 19, 14:50 UTC1h 15m
2026-07-18 ASH6288 - Jul 18, 22:20 UTCJul 18, 23:35 UTC1h 15m
2026-07-18 ASH6288 IAH → MLM Jul 18, 22:14 UTCJul 18, 23:59 UTC1h 45m
2026-07-18 ASH4027 - Jul 18, 18:20 UTCJul 18, 20:20 UTC2h 0m
2026-07-18 ASH4027 MTJ → IAH Jul 18, 18:13 UTCJul 18, 20:15 UTC2h 2m
2026-07-18 ASH6147 - Jul 18, 14:45 UTCJul 18, 16:45 UTC2h 0m
2026-07-18 ASH4025 - Jul 18, 10:15 UTCJul 18, 13:10 UTC2h 55m
2026-07-17 ASH3991 IAH → CHS Jul 17, 23:50 UTCJul 18, 03:05 UTC3h 16m
2026-07-17 ASH3991 IAH → CHS Jul 17, 23:37 UTCJul 18, 02:57 UTC3h 20m
2026-07-17 ASH6215 ZIH → IAH Jul 17, 18:58 UTCJul 17, 20:50 UTC1h 52m
2026-07-17 ASH6215 - Jul 17, 15:35 UTCJul 17, 20:55 UTC5h 20m

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 N87339 page for operator, model, and routing details .

Mode-S AC045E frequently asked

What is Mode-S code AC045E?
AC045E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N87339.
Where is Mode-S AC045E registered?
Mode-S code AC045E 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 AC045E broadcasting right now?
Yes. Mode-S AC045E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC045E, octal 53002136, decimal 11,273,310.
What flights does AC045E operate?
Mode-S AC045E has broadcast 20 distinct callsigns, including ASH6128, ASH6181, ASH6124, ASH6289, ASH6288.