Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABAC48

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N851NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABAC48
Octal
52726110
Decimal
11,250,760
Country
US
Tail
N851NN
Type
B738
No current signal · last broadcast Jul 26, 18:45 UTC
Flights observed
568
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 18:45 UTC

Last known position

Most recent position reported by Mode-S ABAC48.

Country allocation

The ICAO 24-bit address ABAC48 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
AAL3235 American Airlines 6 2026-05-24
AAL444 - 5 2026-07-13
AAL413 - 5 2026-07-15
AAL2572 - 5 2026-07-16
AAL2517 American Airlines 5 2026-04-16
AAL2439 - 5 2026-07-12
AAL2128 American Airlines 5 2026-04-15
AAL1864 - 5 2026-07-13
AAL1819 - 5 2026-06-16
AAL1331 - 5 2026-07-18
AAL3329 - 4 2026-07-01
AAL3092 - 4 2026-07-02
AAL3034 American Airlines 4 2026-06-09
AAL790 American Airlines 3 2026-04-18
AAL680 - 3 2026-06-30
AAL503 American Airlines 3 2026-05-11
AAL490 - 3 2026-06-24
AAL455 American Airlines 3 2026-07-25
AAL384 American Airlines 3 2026-04-26
AAL3201 American Airlines 3 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1586 CHS → CLT Jul 26, 14:35 UTCJul 26, 18:40 UTC4h 5m
2026-07-26 AAL2718 CLT → EWR Jul 26, 01:35 UTCJul 26, 05:15 UTC3h 40m
2026-07-25 AAL3201 ORD → BOS Jul 25, 20:30 UTCJul 26, 00:00 UTC3h 30m
2026-07-25 AAL3201 ORD → BOS Jul 25, 20:28 UTCJul 26, 00:14 UTC3h 46m
2026-07-25 AAL1946 SAN → DFW Jul 25, 16:10 UTCJul 25, 19:15 UTC3h 5m
2026-07-25 AAL455 LAX → PHL Jul 25, 11:30 UTCJul 25, 13:20 UTC1h 50m
2026-07-25 AAL2118 LGA → DCA Jul 25, 02:00 UTCJul 25, 04:45 UTC2h 45m
2026-07-24 AAL3201 ORD → BOS Jul 24, 20:40 UTCJul 25, 00:30 UTC3h 50m
2026-07-24 AAL1946 SAN → DFW Jul 24, 16:25 UTCJul 24, 19:30 UTC3h 5m
2026-07-24 AAL1946 SAN → DFW Jul 24, 16:21 UTCJul 24, 19:22 UTC3h 1m
2026-07-24 AAL2544 DFW → TYS Jul 24, 05:45 UTCJul 24, 06:00 UTC15m
2026-07-24 AAL2544 DFW → TYS Jul 24, 05:44 UTCJul 24, 07:27 UTC1h 43m
2026-07-24 AAL1620 PHX → CVG Jul 24, 00:35 UTCJul 24, 04:25 UTC3h 50m
2026-07-24 AAL1620 PHX → CVG Jul 24, 00:30 UTCJul 24, 04:24 UTC3h 54m
2026-07-23 AAL2907 PHL → SRQ Jul 23, 20:35 UTCJul 23, 22:05 UTC1h 30m
2026-07-23 AAL3080 SVD → JFK Jul 23, 17:30 UTCJul 23, 19:05 UTC1h 35m
2026-07-23 AAL3080 SVD → JFK Jul 23, 17:24 UTCJul 23, 19:07 UTC1h 43m
2026-07-23 AAL3080 SVD → JFK Jul 23, 14:35 UTCJul 23, 16:05 UTC1h 30m
2026-07-23 AAL1204 BUF → CLT Jul 23, 10:15 UTCJul 23, 11:35 UTC1h 20m
2026-07-23 AAL703 CLT → BUF Jul 23, 01:30 UTCJul 23, 02:50 UTC1h 20m
2026-07-22 AAL1683 PHL → IND Jul 22, 22:15 UTCJul 22, 23:35 UTC1h 20m
2026-07-22 AAL1683 PHL → IND Jul 22, 22:14 UTCJul 22, 23:37 UTC1h 23m
2026-07-22 AAL2080 ORD → CLT Jul 22, 19:15 UTCJul 22, 21:00 UTC1h 45m
2026-07-22 AAL1548 PHX → BOS Jul 22, 15:14 UTCJul 22, 17:09 UTC1h 55m
2026-07-22 AAL1548 PHX → BOS Jul 22, 15:15 UTCJul 22, 17:10 UTC1h 55m
2026-07-22 AAL2968 CLT → BOS Jul 22, 12:00 UTCJul 22, 13:50 UTC1h 50m
2026-07-22 AAL2968 CLT → BOS Jul 22, 11:59 UTCJul 22, 13:48 UTC1h 49m
2026-07-21 AAL2537 SFO → ORD Jul 21, 23:35 UTCJul 22, 03:15 UTC3h 40m
2026-07-21 AAL2537 SFO → ORD Jul 21, 23:32 UTCJul 22, 03:09 UTC3h 37m
2026-07-21 AAL3199 CLT → GSP Jul 21, 19:05 UTCJul 21, 20:35 UTC1h 30m
2026-07-21 AAL1777 ATL → PHX Jul 21, 12:40 UTCJul 21, 16:10 UTC3h 30m
2026-07-21 AAL1045 - Jul 21, 00:20 UTCJul 21, 01:45 UTC1h 25m
2026-07-20 AAL2757 SAN → PHX Jul 20, 19:55 UTCJul 20, 22:15 UTC2h 20m
2026-07-20 AAL2757 SAN → PHX Jul 20, 19:09 UTCJul 20, 22:12 UTC3h 3m
2026-07-20 AAL2757 SAN → PHX Jul 20, 14:40 UTCJul 20, 16:55 UTC2h 15m
2026-07-19 AAL2111 LGA → BNA Jul 19, 23:15 UTCJul 20, 01:30 UTC2h 15m
2026-07-19 AAL695 MIA → DFW Jul 19, 18:55 UTCJul 19, 21:20 UTC2h 25m
2026-07-19 AAL695 MIA → DFW Jul 19, 15:35 UTCJul 19, 17:45 UTC2h 10m
2026-07-18 AAL1331 - Jul 18, 22:30 UTCJul 18, 22:35 UTC5m
2026-07-18 AAL1331 - Jul 18, 20:35 UTCJul 18, 22:25 UTC1h 50m
2026-07-18 AAL1331 NAS → PHL Jul 18, 20:07 UTCJul 18, 22:25 UTC2h 18m
2026-07-18 AAL1101 - Jul 18, 15:30 UTCJul 18, 18:05 UTC2h 35m
2026-07-18 AAL537 ELP → DFW Jul 18, 12:10 UTCJul 18, 13:25 UTC1h 15m
2026-07-18 AAL3049 DFW → STL Jul 18, 03:50 UTCJul 18, 05:10 UTC1h 20m
2026-07-17 AAL372 - Jul 17, 22:25 UTCJul 18, 01:30 UTC3h 5m
2026-07-17 AAL819 - Jul 17, 17:05 UTCJul 17, 19:40 UTC2h 35m
2026-07-17 AAL819 DFW → LIR Jul 17, 17:01 UTCJul 17, 20:33 UTC3h 32m
2026-07-17 AAL1537 - Jul 17, 13:15 UTCJul 17, 15:25 UTC2h 10m
2026-07-17 AAL1537 JAX → DFW Jul 17, 13:12 UTCJul 17, 15:20 UTC2h 8m
2026-07-17 AAL2449 DFW → JAX Jul 17, 00:14 UTCJul 17, 02:13 UTC1h 59m

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 N851NN page for operator, model, and routing details .

Mode-S ABAC48 frequently asked

What is Mode-S code ABAC48?
ABAC48 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N851NN.
Where is Mode-S ABAC48 registered?
Mode-S code ABAC48 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 ABAC48 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABAC48, octal 52726110, decimal 11,250,760.
What flights does ABAC48 operate?
Mode-S ABAC48 has broadcast 20 distinct callsigns, including AAL3235, AAL444, AAL413, AAL2572, AAL2517.