Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABA281

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N849NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABA281
Octal
52721201
Decimal
11,248,257
Country
US
Tail
N849NN
Type
B738
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
527
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S ABA281.

Country allocation

The ICAO 24-bit address ABA281 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
AAL3175 American Airlines 6 2026-05-15
AAL2569 - 5 2026-06-24
AAL1953 American Airlines 5 2026-06-06
AAL1915 - 5 2026-07-10
AAL549 - 4 2026-06-24
AAL389 - 4 2026-06-20
AAL3300 American Airlines 4 2026-05-21
AAL3267 American Airlines 4 2026-05-24
AAL3165 American Airlines 4 2026-04-15
AAL2972 - 4 2026-04-13
AAL2806 American Airlines 4 2026-05-27
AAL2740 - 4 2026-07-09
AAL1823 American Airlines 4 2026-04-16
AAL1695 - 4 2026-06-21
AAL1515 - 4 2026-07-16
AAL1507 American Airlines 4 2026-04-27
AAL1081 - 4 2026-06-30
AAL1028 American Airlines 4 2026-06-13
AAL972R American Airlines 3 2026-05-12
AAL874 American Airlines 3 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2735 LGA → DFW Jul 26, 18:45 UTCJul 26, 21:20 UTC2h 35m
2026-07-26 AAL1461 BOS → ORD Jul 26, 00:55 UTCJul 26, 02:50 UTC1h 55m
2026-07-25 AAL2089 ORD → SNA Jul 25, 21:00 UTCJul 25, 23:40 UTC2h 40m
2026-07-25 AAL2089 ORD → SNA Jul 25, 17:15 UTCJul 25, 19:15 UTC2h 0m
2026-07-25 AAL1239 BOS → ORD Jul 25, 13:04 UTCJul 25, 15:13 UTC2h 9m
2026-07-25 AAL1239 BOS → ORD Jul 25, 13:05 UTCJul 25, 15:20 UTC2h 15m
2026-07-25 AAL2539 MIA → BOS Jul 25, 02:15 UTCJul 25, 05:00 UTC2h 45m
2026-07-22 AAL3265 BDL → DFW Jul 22, 19:30 UTCJul 22, 21:55 UTC2h 25m
2026-07-22 AAL551 - Jul 22, 13:40 UTCJul 22, 16:10 UTC2h 30m
2026-07-22 AAL551 MIA → PHL Jul 22, 13:37 UTCJul 22, 16:09 UTC2h 32m
2026-07-22 AAL914 CTG → MIA Jul 22, 01:20 UTCJul 22, 03:45 UTC2h 25m
2026-07-21 AAL2173 MIA → CTG Jul 21, 21:45 UTCJul 22, 00:00 UTC2h 15m
2026-07-21 AAL1474 - Jul 21, 15:20 UTCJul 21, 17:50 UTC2h 30m
2026-07-21 AAL1474 ORD → MIA Jul 21, 15:19 UTCJul 21, 17:50 UTC2h 31m
2026-07-21 AAL1064 AUS → DFW Jul 21, 11:10 UTCJul 21, 13:35 UTC2h 25m
2026-07-21 AAL2118 LGA → DCA Jul 21, 02:30 UTCJul 21, 05:05 UTC2h 35m
2026-07-21 AAL2118 LGA → DCA Jul 21, 02:25 UTCJul 21, 05:05 UTC2h 40m
2026-07-20 AAL966 DCA → CLT Jul 20, 22:45 UTCJul 21, 01:15 UTC2h 29m
2026-07-20 AAL2873 - Jul 20, 18:20 UTCJul 20, 20:15 UTC1h 55m
2026-07-20 AAL2873 TYS → DFW Jul 20, 18:18 UTCJul 20, 20:11 UTC1h 53m
2026-07-20 AAL2873 - Jul 20, 15:30 UTCJul 20, 17:10 UTC1h 40m
2026-07-18 AAL2371 ORD → LGA Jul 18, 22:35 UTCJul 19, 00:55 UTC2h 20m
2026-07-18 AAL2371 ORD → LGA Jul 18, 18:45 UTCJul 18, 21:05 UTC2h 20m
2026-07-17 AAL2181 - Jul 17, 02:45 UTCJul 17, 16:34 UTC13h 50m
2026-07-17 AAL380 - Jul 17, 00:50 UTCJul 17, 01:00 UTC10m
2026-07-16 AAL380 - Jul 16, 21:15 UTCJul 17, 01:00 UTC3h 45m
2026-07-16 AAL380 SAL → DFW Jul 16, 21:02 UTCJul 17, 00:30 UTC3h 28m
2026-07-16 AAL937 - Jul 16, 16:44 UTCJul 16, 19:25 UTC2h 40m
2026-07-16 AAL1515 BNA → DFW Jul 16, 13:20 UTCJul 16, 14:55 UTC1h 35m
2026-07-16 AAL1515 BNA → DFW Jul 16, 13:19 UTCJul 16, 14:57 UTC1h 38m
2026-07-16 AAL1500 DFW → BNA Jul 16, 04:35 UTCJul 16, 06:05 UTC1h 30m
2026-07-16 AAL1626 - Jul 16, 00:15 UTCJul 16, 03:05 UTC2h 50m
2026-07-15 AAL1634 - Jul 15, 20:05 UTCJul 15, 22:10 UTC2h 5m
2026-07-15 AAL3302 PHL → MIA Jul 15, 16:10 UTCJul 15, 18:20 UTC2h 10m
2026-07-15 AAL2328 - Jul 15, 12:10 UTCJul 15, 14:30 UTC2h 20m
2026-07-15 AAL1181 PHL → MIA Jul 15, 00:33 UTCJul 15, 02:44 UTC2h 11m
2026-07-15 AAL1181 - Jul 15, 00:35 UTCJul 15, 02:45 UTC2h 10m
2026-07-14 AAL1855 - Jul 14, 20:10 UTCJul 14, 22:25 UTC2h 15m
2026-07-14 AAL1855 PHL → FLL Jul 14, 16:40 UTCJul 14, 19:00 UTC2h 20m
2026-07-14 AAL3063 - Jul 14, 13:35 UTCJul 14, 14:50 UTC1h 15m
2026-07-14 AAL3063 SJU → PHL Jul 14, 11:14 UTCJul 14, 14:54 UTC3h 40m
2026-07-13 AAL3065 - Jul 13, 23:00 UTCJul 14, 02:25 UTC3h 25m
2026-07-13 AAL2439 RSW → PHL Jul 13, 19:10 UTCJul 13, 21:30 UTC2h 20m
2026-07-13 AAL2439 PHL → RSW Jul 13, 15:35 UTCJul 13, 17:50 UTC2h 15m
2026-07-13 AAL2642 - Jul 13, 11:10 UTCJul 13, 13:35 UTC2h 25m
2026-07-13 AAL2642 - Jul 13, 11:09 UTCJul 13, 13:25 UTC2h 16m
2026-07-13 AAL1764 - Jul 13, 03:40 UTCJul 13, 05:25 UTC1h 45m
2026-07-13 AAL1764 - Jul 13, 03:39 UTCJul 13, 05:22 UTC1h 43m
2026-07-13 AAL1637 - Jul 13, 00:50 UTCJul 13, 01:50 UTC1h 0m
2026-07-12 AAL3004 DFW → BWI Jul 12, 20:45 UTCJul 12, 23:30 UTC2h 45m

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 N849NN page for operator, model, and routing details .

Mode-S ABA281 frequently asked

What is Mode-S code ABA281?
ABA281 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N849NN.
Where is Mode-S ABA281 registered?
Mode-S code ABA281 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 ABA281 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 ABA281, octal 52721201, decimal 11,248,257.
What flights does ABA281 operate?
Mode-S ABA281 has broadcast 20 distinct callsigns, including AAL3175, AAL2569, AAL1953, AAL1915, AAL549.