Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABFEFD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N872NN · BOEING 737-800 · operated by BANK OF UTAH TRUSTEE

Hex
ABFEFD
Octal
52777375
Decimal
11,271,933
Country
US
Tail
N872NN
Type
B738
No current signal · last broadcast 32m ago
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
32m ago

Last known position

Most recent position reported by Mode-S ABFEFD.

Country allocation

The ICAO 24-bit address ABFEFD 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
AAL2348 American Airlines 6 2026-05-18
AAL2439 American Airlines 5 2026-05-08
AAL2262 - 5 2026-07-02
AAL2189 American Airlines 5 2026-04-30
AAL877 - 4 2026-07-05
AAL486 - 4 2026-04-17
AAL462 - 4 2026-07-09
AAL2783 - 4 2026-07-01
AAL2704 - 4 2026-07-09
AAL2664 American Airlines 4 2026-05-23
AAL2581 - 4 2026-06-17
AAL2417 - 4 2026-07-10
AAL2026 American Airlines 4 2026-05-14
AAL1492 American Airlines 4 2026-05-21
AAL1220 - 4 2026-07-02
AAL1094 American Airlines 4 2026-06-09
AAL525 American Airlines 3 2026-05-10
AAL413 American Airlines 3 2026-06-18
AAL3259 American Airlines 3 2026-05-18
AAL3045 American Airlines 3 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 AAL1452 - Jul 18, 01:50 UTCJul 18, 03:15 UTC1h 26m
2026-07-17 AAL1490 DFW → BNA Jul 17, 23:00 UTCJul 18, 00:29 UTC1h 30m
2026-07-17 AAL2873 - Jul 17, 18:25 UTCJul 17, 20:15 UTC1h 50m
2026-07-17 AAL2873 TYS → DFW Jul 17, 18:22 UTCJul 17, 20:12 UTC1h 50m
2026-07-17 AAL2873 - Jul 17, 15:29 UTCJul 17, 17:05 UTC1h 35m
2026-07-17 AAL537 STL → DFW Jul 17, 12:30 UTCJul 17, 14:10 UTC1h 40m
2026-07-16 AAL2686 - Jul 16, 23:15 UTCJul 17, 00:35 UTC1h 20m
2026-07-16 AAL2573 - Jul 16, 20:05 UTCJul 16, 21:15 UTC1h 10m
2026-07-16 AAL2573 - Jul 16, 17:25 UTCJul 16, 18:40 UTC1h 15m
2026-07-16 AAL2427 - Jul 16, 14:29 UTCJul 16, 16:00 UTC1h 30m
2026-07-16 AAL2427 - Jul 16, 11:30 UTCJul 16, 12:49 UTC1h 20m
2026-07-16 AAL1903 - Jul 16, 09:10 UTCJul 16, 09:40 UTC30m
2026-07-16 AAL2969 LGA → RDU Jul 16, 01:15 UTCJul 16, 02:15 UTC1h 0m
2026-07-15 AAL2086 - Jul 15, 21:45 UTCJul 15, 23:30 UTC1h 45m
2026-07-15 AAL831 - Jul 15, 17:00 UTCJul 15, 19:25 UTC2h 25m
2026-07-15 AAL831 - Jul 15, 12:15 UTCJul 15, 14:45 UTC2h 30m
2026-07-15 AAL1305 YVR → ORD Jul 15, 07:05 UTCJul 15, 10:45 UTC3h 40m
2026-07-15 AAL1305 YVR → ORD Jul 15, 07:02 UTCJul 15, 10:38 UTC3h 36m
2026-07-15 AAL1305 - Jul 15, 02:10 UTCJul 15, 05:55 UTC3h 45m
2026-07-14 AAL3056 - Jul 14, 21:25 UTCJul 15, 00:05 UTC2h 39m
2026-07-14 AAL2249 - Jul 14, 19:35 UTCJul 14, 20:00 UTC25m
2026-07-14 AAL2249 NAS → MIA Jul 14, 19:20 UTCJul 14, 19:58 UTC38m
2026-07-14 AAL2249 - Jul 14, 17:05 UTCJul 14, 17:25 UTC20m
2026-07-14 AAL1347 - Jul 14, 12:55 UTCJul 14, 15:10 UTC2h 15m
2026-07-14 AAL2935 - Jul 14, 00:00 UTCJul 14, 02:10 UTC2h 10m
2026-07-13 AAL2935 CLT → IAH Jul 13, 23:55 UTCJul 14, 02:08 UTC2h 13m
2026-07-13 AAL1681 - Jul 13, 20:05 UTCJul 13, 21:15 UTC1h 10m
2026-07-13 AAL1681 CLE → CLT Jul 13, 20:01 UTCJul 13, 21:10 UTC1h 9m
2026-07-13 AAL1681 - Jul 13, 17:35 UTCJul 13, 18:40 UTC1h 5m
2026-07-13 AAL1449 PVD → CLT Jul 13, 14:25 UTCJul 13, 16:00 UTC1h 35m
2026-07-13 AAL1449 PVD → CLT Jul 13, 14:22 UTCJul 13, 16:00 UTC1h 38m
2026-07-13 AAL1449 PVD → CLT Jul 13, 11:45 UTCJul 13, 13:15 UTC1h 30m
2026-07-13 AAL1708 - Jul 13, 09:10 UTCJul 13, 10:10 UTC1h 0m
2026-07-13 AAL3216 - Jul 13, 01:40 UTCJul 13, 03:50 UTC2h 10m
2026-07-12 AAL409 - Jul 12, 15:55 UTCJul 12, 23:30 UTC7h 35m
2026-07-12 AAL475 JFK → DFW Jul 12, 11:05 UTCJul 12, 14:10 UTC3h 5m
2026-07-10 AAL578 DFW → JFK Jul 10, 21:45 UTCJul 11, 00:50 UTC3h 5m
2026-07-10 AAL1358 ATL → DFW Jul 10, 18:15 UTCJul 10, 20:00 UTC1h 45m
2026-07-10 AAL1358 DFW → ATL Jul 10, 15:15 UTCJul 10, 17:00 UTC1h 45m
2026-07-10 AAL1066 - Jul 10, 11:20 UTCJul 10, 13:35 UTC2h 15m
2026-07-10 AAL2417 - Jul 10, 03:55 UTCJul 10, 04:05 UTC10m
2026-07-10 AAL2417 - Jul 10, 01:55 UTCJul 10, 03:10 UTC1h 15m
2026-07-09 AAL2704 - Jul 9, 21:50 UTCJul 10, 00:05 UTC2h 15m
2026-07-09 AAL2704 - Jul 9, 18:25 UTCJul 9, 20:30 UTC2h 5m
2026-07-09 AAL3052 - Jul 9, 15:00 UTCJul 9, 16:55 UTC1h 55m
2026-07-09 AAL3052 ORD → DFW Jul 9, 14:58 UTCJul 9, 16:54 UTC1h 56m
2026-07-09 AAL462 LGA → ORD Jul 9, 10:44 UTCJul 9, 12:30 UTC1h 46m
2026-07-09 AAL462 LGA → ORD Jul 9, 10:45 UTCJul 9, 12:45 UTC2h 0m
2026-07-08 AAL2808 - Jul 8, 22:10 UTCJul 9, 00:30 UTC2h 20m
2026-07-08 AAL3241 PHL → FLL Jul 8, 18:15 UTCJul 8, 20:20 UTC2h 5m

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 N872NN page for operator, model, and routing details .

Mode-S ABFEFD frequently asked

What is Mode-S code ABFEFD?
ABFEFD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N872NN.
Where is Mode-S ABFEFD registered?
Mode-S code ABFEFD 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 ABFEFD broadcasting right now?
No active broadcast right now. Last signal was 32m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABFEFD, octal 52777375, decimal 11,271,933.
What flights does ABFEFD operate?
Mode-S ABFEFD has broadcast 20 distinct callsigns, including AAL2348, AAL2439, AAL2262, AAL2189, AAL877.