Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ABA891

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N850NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
ABA891
Octal
52724221
Decimal
11,249,809
Country
US
Tail
N850NN
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S ABA891.

Country allocation

The ICAO 24-bit address ABA891 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
AAL491 - 6 2026-07-08
AAL2753 - 5 2026-06-26
AAL2487 American Airlines 5 2026-04-25
AAL2090 - 5 2026-06-27
AAL2925 - 4 2026-07-15
AAL2762 American Airlines 4 2026-04-17
AAL2582 - 4 2026-07-07
AAL2358 - 4 2026-07-03
AAL2338 American Airlines 4 2026-06-05
AAL655 American Airlines 3 2026-06-11
AAL652 - 3 2026-04-14
AAL603 - 3 2026-07-06
AAL544 American Airlines 3 2026-05-16
AAL412 - 3 2026-07-09
AAL368 - 3 2026-07-11
AAL3305 American Airlines 3 2026-05-10
AAL3300 - 3 2026-07-10
AAL3051 American Airlines 3 2026-05-18
AAL2876 American Airlines 3 2026-04-19
AAL2651 - 3 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2867 DEN → PHL Jul 26, 19:40 UTCJul 26, 22:15 UTC2h 35m
2026-07-26 AAL2867 DEN → PHL Jul 26, 15:05 UTCJul 26, 18:05 UTC3h 0m
2026-07-26 AAL360 LGA → ORD Jul 26, 11:25 UTCJul 26, 13:25 UTC2h 0m
2026-07-26 AAL2566 LGA → ORD Jul 26, 01:25 UTCJul 26, 02:50 UTC1h 25m
2026-07-26 AAL2566 LGA → ORD Jul 26, 01:20 UTCJul 26, 02:48 UTC1h 28m
2026-07-25 AAL2626 SNA → DFW Jul 25, 19:35 UTCJul 25, 23:10 UTC3h 35m
2026-07-25 AAL2626 SNA → DFW Jul 25, 13:50 UTCJul 25, 18:15 UTC4h 25m
2026-07-25 AAL429 ORD → MIA Jul 25, 09:40 UTCJul 25, 10:30 UTC50m
2026-07-25 AAL626 PHL → CLT Jul 25, 03:35 UTCJul 25, 04:15 UTC40m
2026-07-25 AAL626 PHL → CLT Jul 25, 03:32 UTCJul 25, 04:20 UTC48m
2026-07-25 AAL1614 SFO → DFW Jul 25, 00:40 UTCJul 25, 02:00 UTC1h 20m
2026-07-24 AAL1614 SFO → DFW Jul 24, 22:10 UTCJul 24, 23:20 UTC1h 10m
2026-07-24 AAL1611 PHX → LAS Jul 24, 18:35 UTCJul 24, 20:30 UTC1h 55m
2026-07-24 AAL1611 PHX → LAS Jul 24, 18:34 UTCJul 24, 20:28 UTC1h 54m
2026-07-24 AAL1611 PHX → LAS Jul 24, 15:35 UTCJul 24, 17:05 UTC1h 30m
2026-07-24 AAL1297 CLT → DTW Jul 24, 11:50 UTCJul 24, 13:35 UTC1h 45m
2026-07-24 AAL1036 AUA → MIA Jul 24, 04:02 UTCJul 24, 05:11 UTC1h 9m
2026-07-24 AAL1036 AUA → MIA Jul 24, 04:05 UTCJul 24, 05:05 UTC1h 0m
2026-07-24 AAL1980 IND → PHX Jul 24, 00:40 UTCJul 24, 02:40 UTC2h 0m
2026-07-23 AAL1980 IND → PHX Jul 23, 21:25 UTCJul 23, 23:20 UTC1h 55m
2026-07-23 AAL2049 SJC → PHX Jul 23, 16:50 UTCJul 23, 19:55 UTC3h 5m
2026-07-23 AAL1029 DCA → ORD Jul 23, 12:45 UTCJul 23, 14:50 UTC2h 5m
2026-07-22 AAL2731 BOS → ORD Jul 22, 23:15 UTCJul 23, 00:30 UTC1h 15m
2026-07-22 AAL2731 BOS → ORD Jul 22, 20:35 UTCJul 22, 22:05 UTC1h 30m
2026-07-22 AAL846 BOS → CLT Jul 22, 18:10 UTCJul 22, 19:05 UTC55m
2026-07-22 AAL846 BOS → CLT Jul 22, 15:50 UTCJul 22, 16:45 UTC55m
2026-07-22 AAL712 CLT → PVD Jul 22, 12:35 UTCJul 22, 13:56 UTC1h 21m
2026-07-22 AAL712 CLT → PVD Jul 22, 12:40 UTCJul 22, 14:00 UTC1h 20m
2026-07-21 AAL2686 CLT → GRR Jul 21, 23:20 UTCJul 22, 00:50 UTC1h 30m
2026-07-21 AAL2309 DFW → CVG Jul 21, 20:30 UTCJul 21, 21:35 UTC1h 5m
2026-07-21 AAL2309 DFW → CVG Jul 21, 20:26 UTCJul 21, 21:34 UTC1h 8m
2026-07-21 AAL2309 DFW → CVG Jul 21, 17:50 UTCJul 21, 19:05 UTC1h 15m
2026-07-21 AAL3235 - Jul 21, 11:05 UTCJul 21, 11:40 UTC35m
2026-07-21 AAL1659 CLT → SFO Jul 21, 01:45 UTCJul 21, 02:15 UTC30m
2026-07-20 AAL2352 - Jul 20, 22:20 UTCJul 21, 00:10 UTC1h 49m
2026-07-20 AAL2352 - Jul 20, 19:10 UTCJul 20, 20:55 UTC1h 45m
2026-07-20 AAL493 - Jul 20, 16:25 UTCJul 20, 17:40 UTC1h 15m
2026-07-20 AAL2292 AUS → JFK Jul 20, 11:20 UTCJul 20, 15:00 UTC3h 40m
2026-07-20 AAL935 DCA → PHX Jul 20, 04:40 UTCJul 20, 06:45 UTC2h 5m
2026-07-20 AAL935 DCA → PHX Jul 20, 04:37 UTCJul 20, 06:41 UTC2h 4m
2026-07-19 AAL2013 LAS → ORD Jul 19, 23:25 UTCJul 20, 02:45 UTC3h 20m
2026-07-19 AAL2023 DFW → SFO Jul 19, 21:30 UTCJul 19, 22:10 UTC40m
2026-07-19 AAL2023 DFW → SFO Jul 19, 21:28 UTCJul 19, 22:09 UTC41m
2026-07-19 AAL3058 EWR → PHX Jul 19, 16:00 UTCJul 19, 20:15 UTC4h 15m
2026-07-19 AAL1782 LGA → CLT Jul 19, 13:15 UTCJul 19, 14:30 UTC1h 15m
2026-07-18 AAL3248 - Jul 18, 20:25 UTCJul 19, 00:25 UTC4h 0m
2026-07-18 AAL3248 GND → CLT Jul 18, 20:18 UTCJul 19, 00:21 UTC4h 3m
2026-07-18 AAL1140 CLT → PVD Jul 18, 18:15 UTCJul 18, 18:25 UTC10m
2026-07-18 AAL1140 CLT → PVD Jul 18, 14:30 UTCJul 18, 17:40 UTC3h 10m
2026-07-18 AAL2505 - Jul 18, 10:35 UTCJul 18, 11:55 UTC1h 20m

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 N850NN page for operator, model, and routing details .

Mode-S ABA891 frequently asked

What is Mode-S code ABA891?
ABA891 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N850NN.
Where is Mode-S ABA891 registered?
Mode-S code ABA891 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 ABA891 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ABA891, octal 52724221, decimal 11,249,809.
What flights does ABA891 operate?
Mode-S ABA891 has broadcast 20 distinct callsigns, including AAL491, AAL2753, AAL2487, AAL2090, AAL2925.