Apparatus

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sensors Mode-S transponder

ABF78F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N870NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABF78F
Octal
52773617
Decimal
11,270,031
Country
US
Tail
N870NN
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
413
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S ABF78F.

Country allocation

The ICAO 24-bit address ABF78F 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
AAL2768 American Airlines 6 2026-06-09
AAL1616 - 6 2026-07-11
AAL1510 American Airlines 6 2026-06-14
AAL1915 - 5 2026-07-01
AAL2149 American Airlines 4 2026-05-18
AAL2008 - 4 2026-07-17
AAL1624 American Airlines 4 2026-07-24
AAL1614 - 4 2026-07-12
AAL1482 - 4 2026-07-09
AAL893 - 3 2026-07-13
AAL686 American Airlines 3 2026-06-08
AAL618 - 3 2026-06-20
AAL512 American Airlines 3 2026-06-07
AAL483 - 3 2026-07-16
AAL482 - 3 2026-07-15
AAL3230 - 3 2026-07-02
AAL3126 - 3 2026-06-22
AAL3113 - 3 2026-07-02
AAL2704 - 3 2026-06-16
AAL2669 American Airlines 3 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1331 DFW → SNA Jul 26, 20:25 UTCJul 26, 21:45 UTC1h 20m
2026-07-26 AAL1101 BOS → AUS Jul 26, 16:20 UTCJul 26, 18:15 UTC1h 55m
2026-07-26 AAL1101 BOS → AUS Jul 26, 15:45 UTCJul 26, 16:15 UTC30m
2026-07-25 AAL2144 BOS → DCA Jul 25, 22:15 UTCJul 26, 00:05 UTC1h 50m
2026-07-25 AAL2144 BOS → DCA Jul 25, 16:15 UTCJul 25, 19:00 UTC2h 45m
2026-07-25 AAL2204 RIC → DFW Jul 25, 11:20 UTCJul 25, 11:45 UTC25m
2026-07-25 AAL2204 RIC → DFW Jul 25, 11:17 UTCJul 25, 13:51 UTC2h 34m
2026-07-25 AAL3037 DFW → RIC Jul 25, 00:30 UTCJul 25, 02:55 UTC2h 25m
2026-07-24 AAL1624 PHL → LAS Jul 24, 19:30 UTCJul 24, 22:05 UTC2h 35m
2026-07-24 AAL1624 PHL → LAS Jul 24, 15:25 UTCJul 24, 18:05 UTC2h 40m
2026-07-24 AAL1296 - Jul 24, 13:40 UTCJul 24, 13:45 UTC5m
2026-07-24 AAL1296 - Jul 24, 11:30 UTCJul 24, 13:45 UTC2h 15m
2026-07-24 AAL1296 IND → DFW Jul 24, 11:28 UTCJul 24, 13:25 UTC1h 57m
2026-07-23 AAL1939 BOS → ORD Jul 23, 21:35 UTCJul 23, 22:45 UTC1h 10m
2026-07-23 AAL1877 CLT → PVD Jul 23, 18:10 UTCJul 23, 19:40 UTC1h 30m
2026-07-23 AAL1877 CLT → PVD Jul 23, 15:15 UTCJul 23, 16:45 UTC1h 30m
2026-07-23 AAL1877 CLT → PVD Jul 23, 15:13 UTCJul 23, 16:49 UTC1h 36m
2026-07-23 AAL1575 EWR → CLT Jul 23, 11:55 UTCJul 23, 13:40 UTC1h 45m
2026-07-22 AAL3253 ORD → EWR Jul 22, 23:55 UTCJul 23, 01:20 UTC1h 25m
2026-07-22 AAL3253 ORD → EWR Jul 22, 23:52 UTCJul 23, 01:20 UTC1h 28m
2026-07-22 AAL3254 DCA → ORD Jul 22, 20:15 UTCJul 22, 22:00 UTC1h 45m
2026-07-22 AAL1606 DCA → ORD Jul 22, 16:10 UTCJul 22, 18:15 UTC2h 5m
2026-07-22 AAL1464 - Jul 22, 12:30 UTCJul 22, 14:00 UTC1h 30m
2026-07-21 AAL2155 MIA → SAP Jul 21, 23:35 UTCJul 22, 00:55 UTC1h 20m
2026-07-21 AAL2155 MIA → SAP Jul 21, 23:29 UTCJul 22, 01:29 UTC2h 0m
2026-07-21 AAL411 PHX → MCO Jul 21, 14:25 UTCJul 21, 21:20 UTC6h 55m
2026-07-21 AAL604 CLT → BOS Jul 21, 10:40 UTCJul 21, 12:35 UTC1h 55m
2026-07-21 AAL604 CLT → BOS Jul 21, 10:39 UTCJul 21, 12:34 UTC1h 55m
2026-07-21 AAL993 - Jul 21, 02:00 UTCJul 21, 02:50 UTC50m
2026-07-21 AAL993 CLT → RIC Jul 21, 01:56 UTCJul 21, 02:47 UTC51m
2026-07-20 AAL400 - Jul 20, 22:45 UTCJul 21, 00:25 UTC1h 39m
2026-07-20 AAL1138 IND → PHL Jul 20, 15:15 UTCJul 20, 19:30 UTC4h 15m
2026-07-20 AAL3227 - Jul 20, 11:15 UTCJul 20, 12:45 UTC1h 30m
2026-07-19 AAL2511 - Jul 19, 23:55 UTCJul 20, 00:15 UTC20m
2026-07-19 AAL2511 MIA → STI Jul 19, 23:52 UTCJul 20, 01:31 UTC1h 39m
2026-07-19 AAL2753 - Jul 19, 20:00 UTCJul 19, 22:20 UTC2h 20m
2026-07-19 AAL2753 - Jul 19, 16:25 UTCJul 19, 18:40 UTC2h 15m
2026-07-19 AAL386 MSY → MIA Jul 19, 12:40 UTCJul 19, 14:50 UTC2h 10m
2026-07-19 AAL1472 DFW → MSY Jul 19, 05:30 UTCJul 19, 06:35 UTC1h 5m
2026-07-19 AAL1472 DFW → MSY Jul 19, 05:30 UTCJul 19, 06:33 UTC1h 3m
2026-07-19 AAL1894 - Jul 19, 00:10 UTCJul 19, 02:20 UTC2h 10m
2026-07-18 AAL1894 - Jul 18, 20:45 UTCJul 18, 22:50 UTC2h 5m
2026-07-18 AAL2460 - Jul 18, 17:35 UTCJul 18, 19:10 UTC1h 35m
2026-07-18 AAL2460 - Jul 18, 14:40 UTCJul 18, 16:05 UTC1h 25m
2026-07-18 AAL2728 EWR → DFW Jul 18, 10:00 UTCJul 18, 13:00 UTC3h 0m
2026-07-18 AAL322 - Jul 18, 01:39 UTCJul 18, 04:05 UTC2h 26m
2026-07-17 AAL1222 BOS → MIA Jul 17, 21:05 UTCJul 17, 21:39 UTC35m
2026-07-17 AAL1222 BOS → MIA Jul 17, 16:44 UTCJul 17, 17:05 UTC20m
2026-07-17 AAL1152 - Jul 17, 12:00 UTCJul 17, 14:24 UTC2h 25m
2026-07-17 AAL2008 - Jul 17, 02:20 UTCJul 17, 04:44 UTC2h 25m

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 N870NN page for operator, model, and routing details .

Mode-S ABF78F frequently asked

What is Mode-S code ABF78F?
ABF78F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N870NN.
Where is Mode-S ABF78F registered?
Mode-S code ABF78F 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 ABF78F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABF78F, octal 52773617, decimal 11,270,031.
What flights does ABF78F operate?
Mode-S ABF78F has broadcast 20 distinct callsigns, including AAL2768, AAL1616, AAL1510, AAL1915, AAL2149.