Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A55218

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N442AN · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A55218
Octal
51251030
Decimal
10,834,456
Country
US
Tail
N442AN
Type
A21N
Broadcasting now · callsign AAL1151 · 31,000 ft
Flights observed
437
Distinct callsigns
20
Country
US
Last broadcast
14m ago

Current position

A55218 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A55218 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
AAL31 American Airlines 7 2026-04-25
AAL2669 - 6 2026-06-27
AAL1966 American Airlines 6 2026-05-20
AAL1580 American Airlines 6 2026-06-14
AAL1333 - 6 2026-07-13
AAL1218 American Airlines 6 2026-04-14
AAL713 - 5 2026-06-13
AAL663 American Airlines 5 2026-06-11
AAL567 American Airlines 5 2026-05-14
AAL2911 American Airlines 5 2026-05-11
AAL1709 American Airlines 5 2026-05-27
AAL1703 American Airlines 5 2026-06-03
AAL873 American Airlines 4 2026-05-01
AAL770 - 4 2026-06-25
AAL692 - 4 2026-06-29
AAL58 American Airlines 4 2026-06-12
AAL407 American Airlines 4 2026-06-07
AAL395 American Airlines 4 2026-06-03
AAL1946 American Airlines 4 2026-05-15
AAL1928 - 4 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1151 - Jul 14, 14:10 UTCJul 14, 18:00 UTC3h 50m
2026-07-14 AAL738 - Jul 14, 03:25 UTCJul 14, 08:10 UTC4h 45m
2026-07-13 AAL2534 SEA → PHL Jul 13, 20:40 UTCJul 14, 01:25 UTC4h 45m
2026-07-13 AAL2534 PHL → SEA Jul 13, 13:45 UTCJul 13, 18:45 UTC5h 0m
2026-07-13 AAL1333 - Jul 13, 05:15 UTCJul 13, 10:10 UTC4h 55m
2026-07-12 AAL1333 - Jul 12, 23:10 UTCJul 13, 03:55 UTC4h 45m
2026-07-12 AAL1333 PHL → PHL Jul 12, 22:50 UTCJul 12, 23:05 UTC15m
2026-07-12 AAL779 LAS → PHL Jul 12, 16:11 UTCJul 12, 20:34 UTC4h 23m
2026-07-12 AAL779 LAS → PHL Jul 12, 16:15 UTCJul 12, 20:40 UTC4h 25m
2026-07-12 AAL1969 SRQ → ORD Jul 12, 12:07 UTCJul 12, 14:20 UTC2h 13m
2026-07-12 AAL1969 SRQ → ORD Jul 12, 12:10 UTCJul 12, 14:20 UTC2h 10m
2026-07-12 AAL9745 LAX → DFW Jul 12, 00:20 UTCJul 12, 03:10 UTC2h 50m
2026-07-12 AAL9745 LAX → DFW Jul 12, 00:20 UTCJul 12, 03:01 UTC2h 41m
2026-07-11 AAL2408 - Jul 11, 15:25 UTCJul 11, 20:40 UTC5h 15m
2026-07-11 AAL1228 - Jul 11, 11:40 UTCJul 11, 13:40 UTC2h 0m
2026-07-11 AAL1118 - Jul 11, 05:20 UTCJul 11, 09:50 UTC4h 30m
2026-07-10 AAL2160 CUN → LAX Jul 10, 22:25 UTCJul 11, 02:50 UTC4h 25m
2026-07-10 AAL2801 - Jul 10, 20:40 UTCJul 10, 21:05 UTC25m
2026-07-10 AAL2801 - Jul 10, 16:45 UTCJul 10, 19:50 UTC3h 5m
2026-07-10 AAL1084 - Jul 10, 02:10 UTCJul 10, 04:45 UTC2h 35m
2026-07-09 AAL2041 - Jul 9, 21:15 UTCJul 10, 00:10 UTC2h 55m
2026-07-09 AAL2041 LAX → DFW Jul 9, 21:11 UTCJul 9, 23:55 UTC2h 44m
2026-07-09 AAL2041 - Jul 9, 16:45 UTCJul 9, 19:20 UTC2h 35m
2026-07-09 AAL1198 SFO → DFW Jul 9, 12:40 UTCJul 9, 15:35 UTC2h 55m
2026-07-09 AAL3166 PHL → SFO Jul 9, 00:15 UTCJul 9, 05:55 UTC5h 40m
2026-07-08 AAL433 - Jul 8, 16:50 UTCJul 8, 21:45 UTC4h 55m
2026-07-08 AAL2462 - Jul 8, 12:30 UTCJul 8, 15:00 UTC2h 30m
2026-07-08 AAL3099 - Jul 8, 07:15 UTCJul 8, 09:20 UTC2h 5m
2026-07-08 AAL3099 LAS → DFW Jul 8, 07:11 UTCJul 8, 09:20 UTC2h 9m
2026-07-07 AAL3040 - Jul 7, 20:25 UTCJul 8, 01:05 UTC4h 40m
2026-07-07 AAL3040 PHL → PHL Jul 7, 20:10 UTCJul 7, 20:15 UTC5m
2026-07-07 AAL2955 SFO → MIA Jul 7, 13:35 UTCJul 7, 18:25 UTC4h 50m
2026-07-07 AAL2955 SFO → MIA Jul 7, 13:34 UTCJul 7, 18:23 UTC4h 49m
2026-07-06 AAL1333 - Jul 6, 22:45 UTCJul 7, 03:45 UTC5h 0m
2026-07-06 AAL1333 PHL → PHL Jul 6, 22:10 UTCJul 6, 22:15 UTC5m
2026-07-06 AAL2300 PHX → PHL Jul 6, 16:20 UTCJul 6, 20:20 UTC4h 0m
2026-07-06 AAL2300 PHX → PHL Jul 6, 16:16 UTCJul 6, 20:23 UTC4h 7m
2026-07-06 AAL848 - Jul 6, 13:10 UTCJul 6, 14:15 UTC1h 5m
2026-07-06 AAL205 - Jul 6, 07:05 UTCJul 6, 07:15 UTC10m
2026-07-06 AAL205 - Jul 6, 02:10 UTCJul 6, 02:35 UTC25m
2026-07-05 AAL778 HWO → LAX Jul 5, 19:35 UTCJul 6, 00:30 UTC4h 55m
2026-07-05 AAL2405 - Jul 5, 15:20 UTCJul 5, 17:00 UTC1h 40m
2026-07-05 AAL2405 RDU → MIA Jul 5, 15:18 UTCJul 5, 16:55 UTC1h 37m
2026-07-05 AAL2405 - Jul 5, 12:20 UTCJul 5, 14:00 UTC1h 40m
2026-07-05 AAL1545 - Jul 5, 05:00 UTCJul 5, 10:00 UTC5h 0m
2026-07-04 AAL2426 - Jul 4, 01:05 UTCJul 4, 06:25 UTC5h 20m
2026-07-03 AAL2517 LAX → DFW Jul 3, 20:49 UTCJul 3, 22:55 UTC2h 6m
2026-07-03 AAL2517 LAX → DFW Jul 3, 17:10 UTCJul 3, 22:50 UTC5h 40m
2026-07-03 AAL2017 JFK → MIA Jul 3, 11:55 UTCJul 3, 14:15 UTC2h 20m
2026-07-02 AAL1922 - Jul 2, 23:30 UTCJul 3, 02:00 UTC2h 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 N442AN page for operator, model, and routing details .

Mode-S A55218 frequently asked

What is Mode-S code A55218?
A55218 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N442AN.
Where is Mode-S A55218 registered?
Mode-S code A55218 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 A55218 broadcasting right now?
Yes. Mode-S A55218 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A55218, octal 51251030, decimal 10,834,456.
What flights does A55218 operate?
Mode-S A55218 has broadcast 20 distinct callsigns, including AAL31, AAL2669, AAL1966, AAL1580, AAL1333.