Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABA155

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N849AN · BOEING 787-9 Dreamliner · operated by BOEING CO

Hex
ABA155
Octal
52720525
Decimal
11,247,957
Country
US
Tail
N849AN
Type
B789
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
291
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S ABA155.

Country allocation

The ICAO 24-bit address ABA155 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
AAL729 American Airlines 28 2026-07-20
AAL106 American Airlines 23 2026-07-20
AAL105 American Airlines 21 2026-07-17
AAL736 American Airlines 19 2026-07-21
AAL728 American Airlines 18 2026-07-22
AAL91 - 17 2026-07-16
AAL98 - 16 2026-07-12
AAL55 - 16 2026-06-25
AAL737 American Airlines 14 2026-07-21
AAL50 American Airlines 14 2026-07-26
AAL135 - 14 2026-07-15
AAL21 American Airlines 13 2026-07-25
AAL87 - 12 2026-07-11
AAL86 - 12 2026-06-25
AAL54 American Airlines 12 2026-07-17
AAL101 American Airlines 12 2026-07-22
AAL100 American Airlines 12 2026-07-22
AAL136 American Airlines 10 2026-05-08
AAL134 - 5 2026-07-15
AAL9783 American Airlines 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL50 DFW → LHR Jul 26, 20:20 UTCJul 26, 21:15 UTC55m
2026-07-25 AAL21 LHR → DFW Jul 25, 09:30 UTCJul 25, 18:40 UTC9h 10m
2026-07-24 AAL50 DFW → LHR Jul 24, 20:25 UTCJul 25, 00:30 UTC4h 5m
2026-07-24 AAL50 DFW → LHR Jul 24, 20:22 UTCJul 25, 04:59 UTC8h 37m
2026-07-23 AAL21 LHR → DFW Jul 23, 09:40 UTCJul 23, 18:45 UTC9h 5m
2026-07-22 AAL100 JFK → LHR Jul 22, 22:30 UTCJul 23, 05:05 UTC6h 35m
2026-07-22 AAL101 LHR → JFK Jul 22, 09:55 UTCJul 22, 16:48 UTC6h 53m
2026-07-22 AAL728 PHL → LHR Jul 22, 00:25 UTCJul 22, 16:40 UTC16h 15m
2026-07-21 AAL737 LHR → PHL Jul 21, 12:00 UTCJul 21, 19:05 UTC7h 5m
2026-07-21 AAL737 LHR → PHL Jul 21, 11:57 UTCJul 21, 19:02 UTC7h 5m
2026-07-21 AAL736 PHL → LHR Jul 21, 03:05 UTCJul 21, 09:30 UTC6h 25m
2026-07-20 AAL729 LHR → PHL Jul 20, 08:40 UTCJul 20, 15:45 UTC7h 5m
2026-07-20 AAL106 JFK → LHR Jul 20, 00:02 UTCJul 20, 06:16 UTC6h 14m
2026-07-20 AAL106 JFK → LHR Jul 20, 00:05 UTCJul 20, 06:25 UTC6h 20m
2026-07-18 AAL101 LHR → JFK Jul 18, 09:55 UTCJul 18, 16:35 UTC6h 40m
2026-07-17 AAL106 JFK → LHR Jul 17, 23:41 UTCJul 18, 06:08 UTC6h 27m
2026-07-17 AAL106 JFK → LHR Jul 17, 23:45 UTCJul 18, 06:10 UTC6h 26m
2026-07-17 AAL105 LHR → JFK Jul 17, 13:25 UTCJul 17, 20:04 UTC6h 40m
2026-07-17 AAL105 LHR → JFK Jul 17, 13:24 UTCJul 17, 20:03 UTC6h 39m
2026-07-17 AAL54 DCA → DFW Jul 17, 03:14 UTCJul 17, 10:30 UTC7h 15m
2026-07-16 AAL91 - Jul 16, 14:05 UTCJul 16, 21:40 UTC7h 35m
2026-07-15 AAL134 LAX → LHR Jul 15, 23:30 UTCJul 16, 09:25 UTC9h 55m
2026-07-15 AAL135 - Jul 15, 07:35 UTCJul 15, 17:50 UTC10h 15m
2026-07-14 AAL100 JFK → LHR Jul 14, 22:45 UTCJul 15, 05:20 UTC6h 35m
2026-07-14 AAL101 - Jul 14, 10:10 UTCJul 14, 11:15 UTC1h 5m
2026-07-14 AAL101 LHR → JFK Jul 14, 10:10 UTCJul 14, 16:55 UTC6h 45m
2026-07-13 AAL728 PHL → LHR Jul 13, 23:50 UTCJul 14, 06:35 UTC6h 45m
2026-07-13 AAL729 - Jul 13, 08:40 UTCJul 13, 09:45 UTC1h 5m
2026-07-13 AAL729 LHR → PHL Jul 13, 08:37 UTCJul 13, 15:37 UTC7h 0m
2026-07-13 AAL729 LHR → PHL Jul 13, 08:37 UTCJul 13, 15:34 UTC6h 57m
2026-07-12 AAL106 JFK → LHR Jul 12, 23:45 UTCJul 13, 06:01 UTC6h 15m
2026-07-12 AAL105 LHR → JFK Jul 12, 13:50 UTCJul 12, 20:30 UTC6h 40m
2026-07-12 AAL98 ORD → LHR Jul 12, 03:50 UTCJul 12, 11:05 UTC7h 15m
2026-07-12 AAL98 ORD → LHR Jul 12, 03:47 UTCJul 12, 11:11 UTC7h 24m
2026-07-11 AAL87 LHR → ORD Jul 11, 09:15 UTCJul 11, 16:50 UTC7h 35m
2026-07-10 AAL728 PHL → LHR Jul 10, 23:55 UTCJul 11, 06:25 UTC6h 30m
2026-07-10 AAL728 PHL → LHR Jul 10, 23:55 UTCJul 11, 06:16 UTC6h 21m
2026-07-10 AAL737 - Jul 10, 12:30 UTCJul 10, 19:15 UTC6h 45m
2026-07-10 AAL737 LHR → PHL Jul 10, 12:29 UTCJul 10, 19:52 UTC7h 23m
2026-07-10 AAL54 - Jul 10, 03:15 UTCJul 10, 10:10 UTC6h 55m
2026-07-10 AAL54 ORD → LHR Jul 10, 03:14 UTCJul 10, 10:07 UTC6h 53m
2026-07-09 AAL91 - Jul 9, 14:15 UTCJul 9, 21:50 UTC7h 35m
2026-07-09 AAL50 - Jul 9, 01:25 UTCJul 9, 04:50 UTC3h 25m
2026-07-09 AAL50 DFW → LHR Jul 9, 01:22 UTCJul 9, 09:42 UTC8h 20m
2026-07-08 AAL21 - Jul 8, 15:45 UTCJul 8, 19:10 UTC3h 25m
2026-07-08 AAL21 - Jul 8, 10:00 UTCJul 8, 15:40 UTC5h 40m
2026-07-08 AAL728 PHL → LHR Jul 8, 00:43 UTCJul 8, 07:18 UTC6h 35m
2026-07-08 AAL728 - Jul 8, 00:45 UTCJul 8, 07:15 UTC6h 30m
2026-07-07 AAL737 - Jul 7, 12:00 UTCJul 7, 13:15 UTC1h 15m
2026-07-07 AAL737 LHR → PHL Jul 7, 11:57 UTCJul 7, 19:05 UTC7h 8m

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 N849AN page for operator, model, and routing details .

Mode-S ABA155 frequently asked

What is Mode-S code ABA155?
ABA155 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N849AN.
Where is Mode-S ABA155 registered?
Mode-S code ABA155 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 ABA155 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABA155, octal 52720525, decimal 11,247,957.
What flights does ABA155 operate?
Mode-S ABA155 has broadcast 20 distinct callsigns, including AAL729, AAL106, AAL105, AAL736, AAL728.