Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A6EDE5

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N54570 · AIRBUS A-321neo · operated by UNITED AIRLINES INC

Hex
A6EDE5
Octal
51566745
Decimal
10,939,877
Country
US
Tail
N54570
Type
A21N
No current signal · last broadcast 7h ago
Flights observed
360
Distinct callsigns
20
Country
US
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S A6EDE5.

Country allocation

The ICAO 24-bit address A6EDE5 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
UAL1323 United Airlines 8 2026-07-17
UAL2071 - 7 2026-07-15
UAL526 - 6 2026-07-18
UAL1231 - 6 2026-07-07
UAL714 United Airlines 5 2026-05-08
UAL2497 United Airlines 5 2026-06-13
UAL1411 - 5 2026-07-18
UAL1007 - 5 2026-06-25
UAL530 United Airlines 4 2026-04-28
UAL457 United Airlines 4 2026-04-28
UAL360 United Airlines 4 2026-07-21
UAL2426 United Airlines 4 2026-04-29
UAL2088 United Airlines 4 2026-05-15
UAL2056 United Airlines 4 2026-04-28
UAL2008 - 4 2026-07-15
UAL1996 United Airlines 4 2026-05-15
UAL1924 United Airlines 4 2026-07-17
UAL1904 United Airlines 4 2026-04-26
UAL1874 - 4 2026-07-20
UAL1862 United Airlines 4 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 UAL1792 IAH → EWR Jul 23, 01:43 UTCJul 23, 05:31 UTC3h 48m
2026-07-23 UAL1792 IAH → EWR Jul 23, 01:45 UTCJul 23, 05:35 UTC3h 50m
2026-07-22 UAL1505 EWR → DEN Jul 22, 20:00 UTCJul 22, 22:54 UTC2h 54m
2026-07-22 UAL1505 EWR → DEN Jul 22, 19:55 UTCJul 22, 23:00 UTC3h 5m
2026-07-22 UAL2455 EWR → ATL Jul 22, 14:30 UTCJul 22, 18:10 UTC3h 40m
2026-07-22 UAL1715 DEN → EWR Jul 22, 01:25 UTCJul 22, 04:30 UTC3h 5m
2026-07-21 UAL360 DFW → EWR Jul 21, 20:05 UTCJul 21, 22:05 UTC2h 0m
2026-07-21 UAL405 - Jul 21, 16:45 UTCJul 21, 18:30 UTC1h 45m
2026-07-21 UAL2601 RSW → EWR Jul 21, 12:30 UTCJul 21, 14:45 UTC2h 15m
2026-07-21 UAL360 DFW → EWR Jul 21, 01:40 UTCJul 21, 04:15 UTC2h 35m
2026-07-20 UAL1729 DEN → EWR Jul 20, 19:39 UTCJul 20, 23:23 UTC3h 44m
2026-07-20 UAL1729 DEN → EWR Jul 20, 19:40 UTCJul 20, 23:15 UTC3h 35m
2026-07-20 UAL1442 DEN → LGA Jul 20, 14:20 UTCJul 20, 17:25 UTC3h 5m
2026-07-20 UAL1874 IAH → DEN Jul 20, 10:25 UTCJul 20, 12:15 UTC1h 50m
2026-07-20 UAL1253 PHX → ORD Jul 20, 03:54 UTCJul 20, 05:42 UTC1h 48m
2026-07-20 UAL1253 PHX → ORD Jul 20, 03:55 UTCJul 20, 05:45 UTC1h 50m
2026-07-19 UAL1197 EWR → DEN Jul 19, 22:10 UTCJul 20, 01:35 UTC3h 25m
2026-07-19 UAL1423 DEN → EWR Jul 19, 16:25 UTCJul 19, 20:00 UTC3h 35m
2026-07-19 UAL670 - Jul 19, 11:00 UTCJul 19, 14:25 UTC3h 25m
2026-07-19 UAL670 EWR → DEN Jul 19, 10:49 UTCJul 19, 14:25 UTC3h 36m
2026-07-19 UAL1715 DEN → EWR Jul 19, 01:35 UTCJul 19, 04:40 UTC3h 5m
2026-07-18 UAL2769 ORD → DEN Jul 18, 22:10 UTCJul 19, 00:05 UTC1h 55m
2026-07-18 UAL2865 DEN → ORD Jul 18, 18:05 UTCJul 18, 20:15 UTC2h 10m
2026-07-18 UAL526 - Jul 18, 13:40 UTCJul 18, 15:40 UTC2h 0m
2026-07-18 UAL1411 DEN → ORD Jul 18, 01:25 UTCJul 18, 03:20 UTC1h 56m
2026-07-17 UAL1323 EWR → JAX Jul 17, 22:00 UTCJul 17, 23:25 UTC1h 25m
2026-07-17 UAL1323 EWR → JAX Jul 17, 21:27 UTCJul 17, 23:26 UTC1h 59m
2026-07-17 UAL526 DEN → LAS Jul 17, 18:34 UTCJul 17, 20:04 UTC1h 30m
2026-07-17 UAL792 IAD → DEN Jul 17, 12:25 UTCJul 17, 15:25 UTC3h 0m
2026-07-17 UAL1924 SAN → SFO Jul 17, 06:15 UTCJul 17, 09:15 UTC3h 0m
2026-07-17 UAL1924 SAN → SFO Jul 17, 06:12 UTCJul 17, 09:12 UTC3h 0m
2026-07-17 UAL2610 - Jul 17, 02:10 UTCJul 17, 04:10 UTC2h 0m
2026-07-16 UAL374 - Jul 16, 19:55 UTCJul 16, 23:29 UTC3h 35m
2026-07-16 UAL1069 - Jul 16, 14:10 UTCJul 16, 17:40 UTC3h 30m
2026-07-16 UAL1531 ORD → SAN Jul 16, 01:45 UTCJul 16, 05:25 UTC3h 40m
2026-07-15 UAL2071 - Jul 15, 23:10 UTCJul 15, 23:15 UTC5m
2026-07-15 UAL2071 MCO → ORD Jul 15, 20:50 UTCJul 15, 23:15 UTC2h 25m
2026-07-15 UAL2071 SFO → MCO Jul 15, 20:36 UTCJul 15, 22:52 UTC2h 16m
2026-07-15 UAL2008 - Jul 15, 16:25 UTCJul 15, 18:40 UTC2h 15m
2026-07-15 UAL2008 ORD → MCO Jul 15, 16:34 UTCJul 15, 18:34 UTC2h 0m
2026-07-15 UAL1377 DEN → ORD Jul 15, 12:18 UTCJul 15, 14:01 UTC1h 43m
2026-07-15 UAL1377 DEN → ORD Jul 15, 12:10 UTCJul 15, 14:30 UTC2h 20m
2026-07-14 UAL800 BOS → DEN Jul 14, 21:12 UTCJul 15, 00:49 UTC3h 37m
2026-07-14 UAL800 BOS → DEN Jul 14, 21:10 UTCJul 15, 00:55 UTC3h 44m
2026-07-14 UAL1232 DEN → BOS Jul 14, 16:00 UTCJul 14, 19:35 UTC3h 35m
2026-07-14 UAL1479 SFO → DEN Jul 14, 12:10 UTCJul 14, 14:15 UTC2h 5m
2026-07-14 UAL2106 ORD → SFO Jul 14, 03:08 UTCJul 14, 06:31 UTC3h 23m
2026-07-14 UAL2106 ORD → SFO Jul 14, 02:50 UTCJul 14, 06:35 UTC3h 45m
2026-07-13 UAL1779 - Jul 13, 21:15 UTCJul 14, 00:55 UTC3h 40m
2026-07-13 UAL1940 DEN → SAN Jul 13, 17:25 UTCJul 13, 19:15 UTC1h 50m

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 N54570 page for operator, model, and routing details .

Mode-S A6EDE5 frequently asked

What is Mode-S code A6EDE5?
A6EDE5 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N54570.
Where is Mode-S A6EDE5 registered?
Mode-S code A6EDE5 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 A6EDE5 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A6EDE5, octal 51566745, decimal 10,939,877.
What flights does A6EDE5 operate?
Mode-S A6EDE5 has broadcast 20 distinct callsigns, including UAL1323, UAL2071, UAL526, UAL1231, UAL714.