Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABAFFF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N852NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABAFFF
Octal
52727777
Decimal
11,251,711
Country
US
Tail
N852NN
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
587
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S ABAFFF.

Country allocation

The ICAO 24-bit address ABAFFF 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
AAL2110 American Airlines 9 2026-06-29
AAL3063 - 6 2026-07-18
AAL2439 - 6 2026-07-19
AAL2346 - 6 2026-06-27
AAL1915 - 6 2026-06-30
AAL903 American Airlines 5 2026-07-19
AAL309 American Airlines 5 2026-05-16
AAL2509 American Airlines 5 2026-04-14
AAL1414 American Airlines 5 2026-06-03
AAL3165 - 4 2026-07-04
AAL3045 American Airlines 4 2026-06-05
AAL2870 - 4 2026-07-08
AAL2507 American Airlines 4 2026-04-28
AAL2472 - 4 2026-07-03
AAL2307 - 4 2026-07-01
AAL2226 - 4 2026-06-12
AAL2002 American Airlines 4 2026-05-08
AAL1683 - 4 2026-06-29
AAL1449 American Airlines 4 2026-07-21
AAL1408 American Airlines 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL3254 PHL → DFW Jul 26, 20:10 UTCJul 26, 21:45 UTC1h 35m
2026-07-26 AAL1606 DCA → ORD Jul 26, 16:35 UTCJul 26, 17:45 UTC1h 10m
2026-07-26 AAL1606 DCA → ORD Jul 26, 16:35 UTCJul 26, 18:53 UTC2h 18m
2026-07-26 AAL2155 MIA → SAP Jul 26, 00:00 UTCJul 26, 14:45 UTC14h 46m
2026-07-25 AAL1144 CTG → MIA Jul 25, 18:42 UTCJul 25, 21:10 UTC2h 28m
2026-07-25 AAL1144 CTG → MIA Jul 25, 18:45 UTCJul 25, 21:10 UTC2h 25m
2026-07-25 AAL1145 MIA → CTG Jul 25, 15:20 UTCJul 25, 17:35 UTC2h 15m
2026-07-25 AAL892 PIT → DFW Jul 25, 10:15 UTCJul 25, 11:45 UTC1h 30m
2026-07-25 AAL892 PIT → DFW Jul 25, 10:11 UTCJul 25, 12:47 UTC2h 36m
2026-07-25 AAL1036 AUA → MIA Jul 25, 04:15 UTCJul 25, 05:25 UTC1h 10m
2026-07-24 AAL1980 IND → PHX Jul 24, 23:55 UTCJul 25, 02:10 UTC2h 15m
2026-07-24 AAL1980 IND → PHX Jul 24, 20:40 UTCJul 24, 22:35 UTC1h 55m
2026-07-24 AAL1166 BOS → JFK Jul 24, 15:35 UTCJul 24, 18:40 UTC3h 5m
2026-07-24 AAL327 JFK → CLT Jul 24, 11:25 UTCJul 24, 13:10 UTC1h 45m
2026-07-24 AAL627 ORD → CLT Jul 24, 01:15 UTCJul 24, 02:45 UTC1h 30m
2026-07-23 AAL2318 IND → PHX Jul 23, 21:55 UTCJul 23, 23:45 UTC1h 50m
2026-07-23 AAL2318 IND → PHX Jul 23, 18:55 UTCJul 23, 20:35 UTC1h 40m
2026-07-23 AAL1548 PHX → BOS Jul 23, 15:15 UTCJul 23, 17:20 UTC2h 5m
2026-07-23 AAL1548 PHX → BOS Jul 23, 11:20 UTCJul 23, 13:05 UTC1h 45m
2026-07-22 AAL1699 - Jul 22, 15:30 UTCJul 22, 21:50 UTC6h 20m
2026-07-22 AAL3235 - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 AAL1141 MDE → MIA Jul 22, 03:05 UTCJul 22, 03:35 UTC30m
2026-07-22 AAL1141 MDE → MIA Jul 22, 03:01 UTCJul 22, 03:32 UTC31m
2026-07-21 AAL1449 PVD → CLT Jul 21, 17:35 UTCJul 21, 19:25 UTC1h 50m
2026-07-21 AAL1449 PVD → CLT Jul 21, 17:15 UTCJul 21, 17:30 UTC15m
2026-07-21 AAL1449 PVD → CLT Jul 21, 11:40 UTCJul 21, 13:10 UTC1h 30m
2026-07-21 AAL1449 PVD → CLT Jul 21, 11:37 UTCJul 21, 13:12 UTC1h 35m
2026-07-20 AAL1408 DTW → CLT Jul 20, 22:50 UTCJul 21, 01:05 UTC2h 14m
2026-07-20 AAL1408 DTW → CLT Jul 20, 19:05 UTCJul 20, 21:15 UTC2h 10m
2026-07-20 AAL2828 - Jul 20, 16:00 UTCJul 20, 17:15 UTC1h 15m
2026-07-20 AAL2828 - Jul 20, 13:30 UTCJul 20, 14:45 UTC1h 15m
2026-07-20 AAL2848 BOS → DFW Jul 20, 10:00 UTCJul 20, 11:30 UTC1h 30m
2026-07-20 AAL2848 BOS → DFW Jul 20, 09:55 UTCJul 20, 11:30 UTC1h 35m
2026-07-20 AAL3145 LCH → DFW Jul 20, 01:55 UTCJul 20, 03:55 UTC2h 0m
2026-07-19 AAL903 ORD → DCA Jul 19, 21:20 UTCJul 19, 22:10 UTC50m
2026-07-19 AAL903 ORD → DCA Jul 19, 18:45 UTCJul 19, 18:55 UTC10m
2026-07-19 AAL903 ORD → DCA Jul 19, 18:42 UTCJul 19, 22:10 UTC3h 28m
2026-07-19 AAL903 ORD → DCA Jul 19, 16:55 UTCJul 19, 17:15 UTC20m
2026-07-19 AAL903 ORD → DCA Jul 19, 14:00 UTCJul 19, 14:50 UTC50m
2026-07-19 AAL2439 RSW → PHL Jul 19, 00:20 UTCJul 19, 02:50 UTC2h 30m
2026-07-18 AAL2439 PHL → RSW Jul 18, 17:25 UTCJul 18, 19:40 UTC2h 15m
2026-07-18 AAL3063 - Jul 18, 13:35 UTCJul 18, 14:45 UTC1h 10m
2026-07-18 AAL3063 - Jul 18, 11:05 UTCJul 18, 11:20 UTC15m
2026-07-18 AAL3063 SJU → PHL Jul 18, 11:05 UTCJul 18, 14:41 UTC3h 36m
2026-07-18 AAL3065 PSQ → SJU Jul 18, 02:00 UTCJul 18, 05:15 UTC3h 16m
2026-07-18 AAL3065 PHL → PHL Jul 18, 01:50 UTCJul 18, 01:54 UTC5m
2026-07-17 AAL2439 - Jul 17, 22:10 UTCJul 17, 22:49 UTC40m
2026-07-17 AAL2439 RSW → PHL Jul 17, 20:15 UTCJul 17, 22:49 UTC2h 34m
2026-07-17 AAL2439 - Jul 17, 20:20 UTCJul 17, 22:05 UTC1h 45m
2026-07-17 AAL2439 - Jul 17, 15:40 UTCJul 17, 17:50 UTC2h 10m

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 N852NN page for operator, model, and routing details .

Mode-S ABAFFF frequently asked

What is Mode-S code ABAFFF?
ABAFFF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N852NN.
Where is Mode-S ABAFFF registered?
Mode-S code ABAFFF 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 ABAFFF 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 ABAFFF, octal 52727777, decimal 11,251,711.
What flights does ABAFFF operate?
Mode-S ABAFFF has broadcast 20 distinct callsigns, including AAL2110, AAL3063, AAL2439, AAL2346, AAL1915.