Apparatus

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sensors Mode-S transponder

A2B0ED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N27246 · BOEING 737-800 · operated by UNITED AIRLINES INC

Hex
A2B0ED
Octal
50530355
Decimal
10,662,125
Country
US
Tail
N27246
Type
B738
Broadcasting now · callsign UAL685 · 4,875 ft
Flights observed
361
Distinct callsigns
20
Country
US
Last broadcast
30m ago

Current position

A2B0ED is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A2B0ED 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
UAL441 United Airlines 6 2026-07-10
UAL2160 - 6 2026-07-10
UAL493 United Airlines 5 2026-06-12
UAL478 United Airlines 4 2026-05-24
UAL2101 - 4 2026-07-10
UAL730 United Airlines 3 2026-04-14
UAL703 United Airlines 3 2026-05-24
UAL551 United Airlines 3 2026-05-11
UAL516T United Airlines 3 2026-05-20
UAL2672 United Airlines 3 2026-05-20
UAL267 - 3 2026-06-14
UAL2617 - 3 2026-07-05
UAL2395 United Airlines 3 2026-06-15
UAL2177 United Airlines 3 2026-04-24
UAL2094 - 3 2026-07-14
UAL1382 - 3 2026-07-13
UAL1333 - 3 2026-06-14
UAL1242 - 3 2026-07-07
UAL8142 United Airlines 2 2026-04-25
UAL728 United Airlines 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UAL685 - Jul 14, 18:15 UTCJul 14, 19:15 UTC1h 0m
2026-07-14 UAL503 BOS → ORD Jul 14, 14:49 UTCJul 14, 16:44 UTC1h 55m
2026-07-14 UAL503 BOS → ORD Jul 14, 14:40 UTCJul 14, 16:45 UTC2h 5m
2026-07-14 UAL1186 ORD → BOS Jul 14, 11:20 UTCJul 14, 13:15 UTC1h 55m
2026-07-14 UAL1186 ORD → BOS Jul 14, 11:29 UTCJul 14, 13:16 UTC1h 47m
2026-07-14 UAL2094 PDX → ORD Jul 14, 05:40 UTCJul 14, 09:15 UTC3h 35m
2026-07-14 UAL2094 PDX → ORD Jul 14, 05:50 UTCJul 14, 09:10 UTC3h 20m
2026-07-13 UAL1677 ORD → PDX Jul 13, 21:40 UTCJul 14, 01:25 UTC3h 45m
2026-07-13 UAL1382 - Jul 13, 19:15 UTCJul 13, 19:20 UTC5m
2026-07-13 UAL1382 STL → ORD Jul 13, 18:30 UTCJul 13, 18:56 UTC26m
2026-07-13 UAL1382 STL → ORD Jul 13, 18:25 UTCJul 13, 19:20 UTC55m
2026-07-13 UAL1355 - Jul 13, 16:00 UTCJul 13, 16:45 UTC45m
2026-07-13 UAL1355 - Jul 13, 13:40 UTCJul 13, 14:45 UTC1h 5m
2026-07-12 UAL2476 DEN → CLE Jul 12, 20:10 UTCJul 12, 22:40 UTC2h 30m
2026-07-12 UAL1537 PHL → DEN Jul 12, 14:10 UTCJul 12, 17:35 UTC3h 25m
2026-07-12 UAL1537 PHL → DEN Jul 12, 14:14 UTCJul 12, 17:33 UTC3h 19m
2026-07-11 UAL1776 ORD → PHL Jul 11, 23:50 UTCJul 12, 01:20 UTC1h 30m
2026-07-11 UAL2199 LGA → ORD Jul 11, 20:25 UTCJul 11, 22:15 UTC1h 50m
2026-07-11 UAL669 ORD → LGA Jul 11, 17:10 UTCJul 11, 18:55 UTC1h 45m
2026-07-11 UAL669 ORD → LGA Jul 11, 17:06 UTCJul 11, 18:51 UTC1h 45m
2026-07-11 UAL2822 LGA → ORD Jul 11, 11:30 UTCJul 11, 13:30 UTC2h 0m
2026-07-11 UAL1623 ORD → LGA Jul 11, 01:10 UTCJul 11, 02:45 UTC1h 35m
2026-07-10 UAL2160 DFW → ORD Jul 10, 19:30 UTCJul 10, 21:45 UTC2h 16m
2026-07-10 UAL441 EWR → FLL Jul 10, 15:55 UTCJul 10, 17:40 UTC1h 45m
2026-07-10 UAL1811 PHL → ORD Jul 10, 12:20 UTCJul 10, 14:10 UTC1h 50m
2026-07-10 UAL1776 ORD → PHL Jul 10, 07:40 UTCJul 10, 09:05 UTC1h 25m
2026-07-10 UAL2101 ORD → ORD Jul 10, 05:35 UTCJul 10, 05:40 UTC5m
2026-07-10 UAL2101 - Jul 10, 04:55 UTCJul 10, 05:40 UTC45m
2026-07-10 UAL2101 IND → ORD Jul 10, 04:57 UTCJul 10, 05:17 UTC20m
2026-07-09 UAL2101 SEA → IND Jul 9, 23:05 UTCJul 10, 03:25 UTC4h 20m
2026-07-09 UAL2205 - Jul 9, 17:40 UTCJul 9, 21:50 UTC4h 10m
2026-07-09 UAL2319 - Jul 9, 13:35 UTCJul 9, 15:30 UTC1h 55m
2026-07-08 UAL1312 - Jul 8, 00:20 UTCJul 8, 02:00 UTC1h 40m
2026-07-07 UAL1242 - Jul 7, 20:20 UTCJul 7, 22:25 UTC2h 5m
2026-07-07 UAL1242 SAP → IAH Jul 7, 19:42 UTCJul 7, 22:13 UTC2h 31m
2026-07-07 UAL1487 - Jul 7, 15:55 UTCJul 7, 17:50 UTC1h 55m
2026-07-07 UAL1487 IAH → SAP Jul 7, 16:05 UTCJul 7, 18:19 UTC2h 14m
2026-07-07 UAL2281 - Jul 7, 12:15 UTCJul 7, 13:15 UTC1h 0m
2026-07-07 UAL2236 - Jul 7, 01:45 UTCJul 7, 02:25 UTC40m
2026-07-06 UAL1326 AUS → IAH Jul 6, 23:35 UTCJul 7, 00:10 UTC35m
2026-07-06 UAL2270 DEN → AUS Jul 6, 20:05 UTCJul 6, 21:45 UTC1h 40m
2026-07-06 UAL1315 EWR → FLL Jul 6, 17:00 UTCJul 6, 18:25 UTC1h 25m
2026-07-06 UAL1264 - Jul 6, 13:00 UTCJul 6, 15:35 UTC2h 35m
2026-07-05 UAL2617 LGA → IAH Jul 5, 14:38 UTCJul 5, 17:28 UTC2h 50m
2026-07-05 UAL2617 - Jul 5, 14:30 UTCJul 5, 17:35 UTC3h 5m
2026-07-05 UAL2617 ORD → LGA Jul 5, 11:25 UTCJul 5, 12:55 UTC1h 30m
2026-06-29 UAL2160 PHX → SFO Jun 29, 19:24 UTCJun 29, 21:14 UTC1h 50m
2026-06-29 UAL441 EWR → FLL Jun 29, 15:39 UTCJun 29, 17:40 UTC2h 0m
2026-06-29 UAL2771 - Jun 29, 12:20 UTCJun 29, 13:44 UTC1h 25m
2026-06-29 UAL1748 IAH → JAX Jun 29, 00:05 UTCJun 29, 01:34 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 N27246 page for operator, model, and routing details .

Mode-S A2B0ED frequently asked

What is Mode-S code A2B0ED?
A2B0ED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N27246.
Where is Mode-S A2B0ED registered?
Mode-S code A2B0ED 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 A2B0ED broadcasting right now?
Yes. Mode-S A2B0ED is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B0ED, octal 50530355, decimal 10,662,125.
What flights does A2B0ED operate?
Mode-S A2B0ED has broadcast 20 distinct callsigns, including UAL441, UAL2160, UAL493, UAL478, UAL2101.