Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A5C4DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N471AN · operated by AMERICAN AIRLINES INC

Hex
A5C4DE
Octal
51342336
Decimal
10,863,838
Country
US
Tail
N471AN
Type
A21N
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
500
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A5C4DE.

Country allocation

The ICAO 24-bit address A5C4DE 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
AAL1983 - 9 2026-06-23
AAL246 American Airlines 8 2026-05-05
AAL663 American Airlines 7 2026-06-04
AAL3218 American Airlines 7 2026-07-22
AAL1986 American Airlines 7 2026-07-25
AAL1208 - 6 2026-07-21
AAL58 American Airlines 5 2026-06-05
AAL3164 - 5 2026-07-19
AAL2187 American Airlines 5 2026-07-25
AAL2009 American Airlines 5 2026-07-22
AAL1489 - 5 2026-07-14
AAL1471 American Airlines 5 2026-07-23
AAL1451 American Airlines 5 2026-06-05
AAL1330 - 5 2026-07-13
AAL757 - 4 2026-07-07
AAL565 American Airlines 4 2026-04-23
AAL395 - 4 2026-06-28
AAL3272 American Airlines 4 2026-04-16
AAL3239 - 4 2026-06-27
AAL3163 - 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2529 ORD → MCO Jul 26, 20:55 UTCJul 26, 21:30 UTC35m
2026-07-26 AAL2529 ORD → MCO Jul 26, 14:05 UTCJul 26, 19:20 UTC5h 15m
2026-07-26 AAL2514 PHX → DFW Jul 26, 07:00 UTCJul 26, 11:35 UTC4h 35m
2026-07-26 AAL2514 PHX → DFW Jul 26, 06:59 UTCJul 26, 11:28 UTC4h 29m
2026-07-26 AAL2556 PWM → PHL Jul 26, 00:45 UTCJul 26, 05:35 UTC4h 50m
2026-07-25 AAL2923 BOS → LAX Jul 25, 19:30 UTCJul 25, 23:15 UTC3h 45m
2026-07-25 AAL1986 DFW → PDX Jul 25, 14:10 UTCJul 25, 17:30 UTC3h 20m
2026-07-25 AAL1986 DFW → PDX Jul 25, 14:04 UTCJul 25, 17:48 UTC3h 44m
2026-07-25 AAL2187 DFW → OAX Jul 25, 10:40 UTCJul 25, 12:10 UTC1h 30m
2026-07-24 AAL2517 LAX → DFW Jul 24, 17:10 UTCJul 24, 23:55 UTC6h 45m
2026-07-24 AAL422 DCA → MIA Jul 24, 12:40 UTCJul 24, 14:55 UTC2h 15m
2026-07-23 AAL667 SEA → DFW Jul 23, 23:10 UTCJul 24, 01:15 UTC2h 5m
2026-07-23 AAL667 SEA → DFW Jul 23, 23:05 UTCJul 24, 01:10 UTC2h 5m
2026-07-23 AAL1589 DFW → AUS Jul 23, 18:10 UTCJul 23, 21:30 UTC3h 20m
2026-07-23 AAL1589 DFW → AUS Jul 23, 13:35 UTCJul 23, 16:20 UTC2h 45m
2026-07-23 AAL1471 PHX → TPA Jul 23, 04:35 UTCJul 23, 09:50 UTC5h 15m
2026-07-22 AAL2009 SFO → PHL Jul 22, 22:30 UTCJul 23, 01:55 UTC3h 25m
2026-07-22 AAL3218 SFO → LAX Jul 22, 18:20 UTCJul 22, 21:00 UTC2h 40m
2026-07-22 AAL3218 SFO → LAX Jul 22, 18:19 UTCJul 22, 21:07 UTC2h 48m
2026-07-22 AAL713 DCA → PHX Jul 22, 11:20 UTCJul 22, 16:05 UTC4h 45m
2026-07-21 AAL2912 ORD → XNA Jul 21, 20:35 UTCJul 21, 22:05 UTC1h 30m
2026-07-21 AAL1208 - Jul 21, 13:40 UTCJul 21, 17:55 UTC4h 15m
2026-07-21 AAL1208 LAX → CLT Jul 21, 13:39 UTCJul 21, 17:52 UTC4h 13m
2026-07-20 AAL529 ORD → LAX Jul 20, 22:20 UTCJul 21, 01:55 UTC3h 34m
2026-07-20 AAL836 - Jul 20, 18:15 UTCJul 20, 19:50 UTC1h 35m
2026-07-20 AAL840 - Jul 20, 15:10 UTCJul 20, 16:45 UTC1h 35m
2026-07-20 AAL840 MIA → CLT Jul 20, 15:07 UTCJul 20, 16:39 UTC1h 32m
2026-07-20 AAL2593 MSP → DFW Jul 20, 12:55 UTCJul 20, 13:35 UTC40m
2026-07-19 AAL2192 - Jul 19, 21:35 UTCJul 20, 02:10 UTC4h 35m
2026-07-19 AAL1748 - Jul 19, 14:45 UTCJul 19, 19:05 UTC4h 20m
2026-07-19 AAL2093 PHL → MCO Jul 19, 11:15 UTCJul 19, 13:05 UTC1h 50m
2026-07-19 AAL3164 PHL → PHL Jul 19, 03:20 UTCJul 19, 03:35 UTC15m
2026-07-18 AAL3164 - Jul 18, 21:50 UTCJul 19, 03:05 UTC5h 15m
2026-07-18 AAL3164 LAX → PHL Jul 18, 21:49 UTCJul 19, 03:04 UTC5h 15m
2026-07-18 AAL2070 - Jul 18, 11:50 UTCJul 18, 16:05 UTC4h 15m
2026-07-18 AAL2070 CLT → LAX Jul 18, 11:47 UTCJul 18, 16:00 UTC4h 13m
2026-07-18 AAL1661 CLT → IAH Jul 18, 02:19 UTCJul 18, 03:30 UTC1h 11m
2026-07-18 AAL1661 CLT → IAH Jul 18, 02:30 UTCJul 18, 03:40 UTC1h 10m
2026-07-17 AAL2534 SEA → PHL Jul 17, 20:40 UTCJul 18, 01:10 UTC4h 30m
2026-07-17 AAL2534 PHL → SEA Jul 17, 13:15 UTCJul 17, 18:25 UTC5h 10m
2026-07-17 AAL2534 PHL → SEA Jul 17, 13:18 UTCJul 17, 18:24 UTC5h 6m
2026-07-17 AAL2758 - Jul 17, 07:05 UTCJul 17, 11:45 UTC4h 40m
2026-07-16 AAL266 - Jul 16, 23:59 UTCJul 17, 00:20 UTC20m
2026-07-16 AAL266 LIH → LAX Jul 16, 23:46 UTCJul 17, 04:52 UTC5h 6m
2026-07-16 AAL119 - Jul 16, 16:35 UTCJul 16, 21:50 UTC5h 15m
2026-07-16 AAL119 LAX → LIH Jul 16, 16:31 UTCJul 16, 21:53 UTC5h 22m
2026-07-16 AAL2005 - Jul 16, 11:25 UTCJul 16, 14:00 UTC2h 35m
2026-07-16 AAL2005 DFW → LAX Jul 16, 11:24 UTCJul 16, 13:57 UTC2h 33m
2026-07-16 AAL3286 LAS → DFW Jul 16, 04:35 UTCJul 16, 06:50 UTC2h 15m
2026-07-15 AAL3040 - Jul 15, 21:15 UTCJul 16, 01:40 UTC4h 25m

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 N471AN page for operator, model, and routing details .

Mode-S A5C4DE frequently asked

What is Mode-S code A5C4DE?
A5C4DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N471AN.
Where is Mode-S A5C4DE registered?
Mode-S code A5C4DE 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 A5C4DE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5C4DE, octal 51342336, decimal 10,863,838.
What flights does A5C4DE operate?
Mode-S A5C4DE has broadcast 20 distinct callsigns, including AAL1983, AAL246, AAL663, AAL3218, AAL1986.