Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABBB24

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N855NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABBB24
Octal
52735444
Decimal
11,254,564
Country
US
Tail
N855NN
Type
B738
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
550
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S ABBB24.

Country allocation

The ICAO 24-bit address ABBB24 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
AAL3165 - 8 2026-07-08
AAL1618 - 8 2026-07-12
AAL1386 American Airlines 8 2026-07-20
AAL2512 American Airlines 7 2026-05-01
AAL3051 American Airlines 6 2026-05-14
AAL707 American Airlines 5 2026-04-16
AAL2885 - 5 2026-06-22
AAL2828 American Airlines 5 2026-06-07
AAL2586 American Airlines 5 2026-07-22
AAL1894 American Airlines 5 2026-05-27
AAL1097 - 5 2026-07-22
AAL830 - 4 2026-06-19
AAL2571 American Airlines 4 2026-07-02
AAL2544 American Airlines 4 2026-04-14
AAL2523 - 4 2026-07-15
AAL2269 - 4 2026-07-09
AAL2139 American Airlines 4 2026-05-04
AAL2047 American Airlines 4 2026-06-10
AAL1714 American Airlines 4 2026-05-06
AAL1607 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2389 EWR → CLT Jul 26, 20:35 UTCJul 26, 23:00 UTC2h 25m
2026-07-26 AAL2389 EWR → CLT Jul 26, 15:15 UTCJul 26, 18:35 UTC3h 20m
2026-07-26 AAL803 DCA → DFW Jul 26, 10:20 UTCJul 26, 13:10 UTC2h 50m
2026-07-26 AAL803 DCA → DFW Jul 26, 10:19 UTCJul 26, 13:05 UTC2h 46m
2026-07-26 AAL3238 DFW → SLC Jul 26, 02:00 UTCJul 26, 04:10 UTC2h 10m
2026-07-26 AAL3238 DFW → SLC Jul 26, 01:56 UTCJul 26, 04:09 UTC2h 13m
2026-07-25 AAL814 LAX → PHL Jul 25, 21:35 UTCJul 26, 00:50 UTC3h 15m
2026-07-25 AAL814 LAX → PHL Jul 25, 16:40 UTCJul 25, 20:10 UTC3h 30m
2026-07-25 AAL589 STL → BOS Jul 25, 13:10 UTCJul 25, 15:05 UTC1h 55m
2026-07-24 AAL2808 PHL → MSY Jul 24, 22:45 UTCJul 25, 01:15 UTC2h 30m
2026-07-24 AAL3241 BOS → DFW Jul 24, 18:55 UTCJul 24, 21:00 UTC2h 5m
2026-07-24 AAL3241 BOS → DFW Jul 24, 18:55 UTCJul 24, 21:19 UTC2h 24m
2026-07-24 AAL3057 PHX → CLT Jul 24, 13:15 UTCJul 24, 17:00 UTC3h 45m
2026-07-24 AAL1134 PEI → MIA Jul 24, 01:40 UTCJul 24, 05:55 UTC4h 15m
2026-07-23 AAL454 PUJ → PHL Jul 23, 18:30 UTCJul 23, 23:45 UTC5h 15m
2026-07-23 AAL969 ORD → BWI Jul 23, 15:35 UTCJul 23, 17:05 UTC1h 30m
2026-07-23 AAL2866 - Jul 23, 12:35 UTCJul 23, 14:10 UTC1h 35m
2026-07-23 AAL1072 CLT → CMH Jul 23, 03:35 UTCJul 23, 05:20 UTC1h 45m
2026-07-23 AAL1072 CLT → CMH Jul 23, 03:34 UTCJul 23, 05:18 UTC1h 44m
2026-07-22 AAL2586 CLT → BGI Jul 22, 19:30 UTCJul 22, 23:45 UTC4h 15m
2026-07-22 AAL1263 ORD → LGA Jul 22, 13:55 UTCJul 22, 18:10 UTC4h 15m
2026-07-22 AAL1097 - Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-21 AAL2442 ORD → FLL Jul 21, 22:50 UTCJul 22, 00:15 UTC1h 25m
2026-07-21 AAL2225 OMA → CLT Jul 21, 19:07 UTCJul 21, 20:58 UTC1h 51m
2026-07-21 AAL2225 - Jul 21, 15:35 UTCJul 21, 17:35 UTC2h 0m
2026-07-21 AAL712 CLT → PVD Jul 21, 12:40 UTCJul 21, 14:05 UTC1h 25m
2026-07-21 AAL1010 DFW → STL Jul 21, 02:20 UTCJul 21, 03:40 UTC1h 20m
2026-07-20 AAL3151 LAX → PIT Jul 20, 17:30 UTCJul 20, 22:40 UTC5h 10m
2026-07-20 AAL3193 - Jul 20, 14:45 UTCJul 20, 15:30 UTC45m
2026-07-20 AAL3193 IAH → DFW Jul 20, 14:42 UTCJul 20, 15:28 UTC46m
2026-07-20 AAL3193 DFW → IAH Jul 20, 12:35 UTCJul 20, 13:30 UTC55m
2026-07-20 AAL1386 CLT → DCA Jul 20, 01:13 UTCJul 20, 03:01 UTC1h 48m
2026-07-20 AAL1386 CLT → DCA Jul 20, 01:15 UTCJul 20, 03:00 UTC1h 45m
2026-07-19 AAL1386 CLT → DCA Jul 19, 21:00 UTCJul 19, 21:50 UTC50m
2026-07-19 AAL1386 CLT → DCA Jul 19, 16:30 UTCJul 19, 19:10 UTC2h 40m
2026-07-19 AAL1220 PBI → DFW Jul 19, 12:00 UTCJul 19, 14:30 UTC2h 30m
2026-07-19 AAL1764 SEA → ORD Jul 19, 05:35 UTCJul 19, 07:00 UTC1h 25m
2026-07-19 AAL1764 SEA → ORD Jul 19, 05:34 UTCJul 19, 07:02 UTC1h 28m
2026-07-19 AAL2352 - Jul 19, 00:45 UTCJul 19, 03:10 UTC2h 25m
2026-07-19 AAL2352 PWM → CLT Jul 19, 00:42 UTCJul 19, 03:11 UTC2h 29m
2026-07-18 AAL2352 - Jul 18, 21:25 UTCJul 18, 23:15 UTC1h 50m
2026-07-18 AAL3280 - Jul 18, 18:40 UTCJul 18, 20:10 UTC1h 30m
2026-07-18 AAL1290 DFW → ORD Jul 18, 15:05 UTCJul 18, 17:00 UTC1h 55m
2026-07-18 AAL808 DFW → PHL Jul 18, 00:50 UTCJul 18, 03:35 UTC2h 46m
2026-07-17 AAL1331 - Jul 17, 20:20 UTCJul 17, 22:20 UTC2h 0m
2026-07-17 AAL1331 NAS → PHL Jul 17, 19:59 UTCJul 17, 22:19 UTC2h 20m
2026-07-17 AAL1101 - Jul 17, 15:55 UTCJul 17, 18:25 UTC2h 30m
2026-07-17 AAL533 AUS → LAX Jul 17, 11:30 UTCJul 17, 14:24 UTC2h 55m
2026-07-17 AAL421 - Jul 17, 01:55 UTCJul 17, 04:35 UTC2h 40m
2026-07-16 AAL2754 - Jul 16, 21:50 UTCJul 17, 00:10 UTC2h 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 N855NN page for operator, model, and routing details .

Mode-S ABBB24 frequently asked

What is Mode-S code ABBB24?
ABBB24 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N855NN.
Where is Mode-S ABBB24 registered?
Mode-S code ABBB24 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 ABBB24 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABBB24, octal 52735444, decimal 11,254,564.
What flights does ABBB24 operate?
Mode-S ABBB24 has broadcast 20 distinct callsigns, including AAL3165, AAL1618, AAL1386, AAL2512, AAL3051.