Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB20DF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N816NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AB20DF
Octal
52620337
Decimal
11,215,071
Country
US
Tail
N816NN
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
541
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AB20DF.

Country allocation

The ICAO 24-bit address AB20DF 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
AAL2460 - 8 2026-07-15
AAL2418 American Airlines 5 2026-04-16
AAL1728 - 5 2026-07-16
AAL695 - 4 2026-07-14
AAL1913 American Airlines 4 2026-05-09
AAL1682 - 4 2026-06-26
AAL1616 American Airlines 4 2026-07-26
AAL471 American Airlines 3 2026-07-04
AAL463 - 3 2026-06-22
AAL3298 American Airlines 3 2026-05-09
AAL3125 American Airlines 3 2026-05-14
AAL3091 American Airlines 3 2026-06-17
AAL3034 - 3 2026-04-13
AAL2898 American Airlines 3 2026-04-16
AAL2891 American Airlines 3 2026-04-16
AAL2693 American Airlines 3 2026-05-14
AAL2673 - 3 2026-07-09
AAL2639 American Airlines 3 2026-07-25
AAL2600 - 3 2026-07-08
AAL2552 - 3 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2731 BOS → ORD Jul 26, 21:10 UTCJul 26, 21:45 UTC35m
2026-07-26 AAL1616 BDL → PHL Jul 26, 18:06 UTCJul 26, 19:24 UTC1h 18m
2026-07-26 AAL1616 BDL → PHL Jul 26, 15:30 UTCJul 26, 16:55 UTC1h 25m
2026-07-26 AAL2692 EWR → MIA Jul 26, 12:45 UTCJul 26, 13:50 UTC1h 5m
2026-07-26 AAL1500 DFW → BNA Jul 26, 01:40 UTCJul 26, 03:15 UTC1h 35m
2026-07-26 AAL1500 DFW → BNA Jul 26, 01:40 UTCJul 26, 03:09 UTC1h 29m
2026-07-25 AAL2371 ORD → LGA Jul 25, 21:50 UTCJul 26, 00:15 UTC2h 25m
2026-07-25 AAL2371 ORD → LGA Jul 25, 18:05 UTCJul 25, 20:30 UTC2h 25m
2026-07-25 AAL2591 JFK → MBJ Jul 25, 13:50 UTCJul 25, 16:35 UTC2h 45m
2026-07-25 AAL2591 JFK → MBJ Jul 25, 13:47 UTCJul 25, 16:34 UTC2h 47m
2026-07-25 AAL3174 CLT → BWI Jul 25, 05:10 UTCJul 25, 06:15 UTC1h 5m
2026-07-25 AAL2639 ORD → SFO Jul 25, 02:45 UTCJul 25, 03:40 UTC55m
2026-07-25 AAL2639 ORD → SFO Jul 25, 02:41 UTCJul 25, 03:46 UTC1h 5m
2026-07-25 AAL2639 ORD → SFO Jul 25, 00:25 UTCJul 25, 01:15 UTC50m
2026-07-24 AAL1750 CUN → DFW Jul 24, 20:30 UTCJul 24, 23:10 UTC2h 40m
2026-07-24 AAL1750 CUN → DFW Jul 24, 20:27 UTCJul 24, 23:22 UTC2h 55m
2026-07-24 AAL1750 CUN → DFW Jul 24, 16:40 UTCJul 24, 19:15 UTC2h 35m
2026-07-24 AAL866 PHX → ORD Jul 24, 01:35 UTCJul 24, 04:40 UTC3h 5m
2026-07-23 AAL3254 PHL → DFW Jul 23, 20:22 UTCJul 23, 21:59 UTC1h 37m
2026-07-23 AAL3254 PHL → DFW Jul 23, 20:25 UTCJul 23, 22:00 UTC1h 35m
2026-07-23 AAL1606 DCA → ORD Jul 23, 16:15 UTCJul 23, 18:45 UTC2h 30m
2026-07-23 AAL2294 SEA → PHL Jul 23, 12:10 UTCJul 23, 14:35 UTC2h 25m
2026-07-23 AAL1715 DTW → DFW Jul 23, 01:30 UTCJul 23, 03:35 UTC2h 5m
2026-07-23 AAL1715 DTW → DFW Jul 23, 01:29 UTCJul 23, 03:36 UTC2h 7m
2026-07-22 AAL396 LGA → ORD Jul 22, 21:40 UTCJul 22, 23:40 UTC2h 0m
2026-07-22 AAL396 LGA → ORD Jul 22, 21:35 UTCJul 22, 23:37 UTC2h 2m
2026-07-22 AAL2490 LAX → DFW Jul 22, 16:25 UTCJul 22, 18:50 UTC2h 25m
2026-07-22 AAL2490 LAX → DFW Jul 22, 16:20 UTCJul 22, 18:50 UTC2h 30m
2026-07-22 AAL2490 LAX → DFW Jul 22, 12:25 UTCJul 22, 15:15 UTC2h 50m
2026-07-21 AAL2805 LAS → PHL Jul 21, 16:25 UTCJul 21, 18:45 UTC2h 20m
2026-07-21 AAL2805 LAS → PHL Jul 21, 12:45 UTCJul 21, 15:10 UTC2h 25m
2026-07-20 AAL1060 - Jul 20, 21:50 UTCJul 20, 23:10 UTC1h 20m
2026-07-20 AAL1616 - Jul 20, 18:40 UTCJul 20, 20:15 UTC1h 35m
2026-07-20 AAL1616 - Jul 20, 16:05 UTCJul 20, 17:25 UTC1h 20m
2026-07-20 AAL712 CLT → PVD Jul 20, 13:10 UTCJul 20, 14:25 UTC1h 15m
2026-07-20 AAL1594 PHL → IND Jul 20, 01:35 UTCJul 20, 03:55 UTC2h 20m
2026-07-20 AAL1594 PHL → IND Jul 20, 01:35 UTCJul 20, 03:48 UTC2h 13m
2026-07-19 AAL2890 - Jul 19, 18:25 UTCJul 20, 00:10 UTC5h 45m
2026-07-19 AAL1884 - Jul 19, 11:25 UTCJul 19, 12:30 UTC1h 5m
2026-07-19 AAL1646 DFW → AUS Jul 19, 04:30 UTCJul 19, 05:35 UTC1h 5m
2026-07-19 AAL2148 MSP → DFW Jul 19, 00:25 UTCJul 19, 02:20 UTC1h 55m
2026-07-18 AAL2148 - Jul 18, 21:15 UTCJul 18, 23:10 UTC1h 55m
2026-07-18 AAL2341 - Jul 18, 17:20 UTCJul 18, 19:00 UTC1h 40m
2026-07-18 AAL1236 - Jul 18, 13:40 UTCJul 18, 15:10 UTC1h 30m
2026-07-18 AAL1236 DFW → QRO Jul 18, 13:38 UTCJul 18, 15:30 UTC1h 52m
2026-07-18 AAL2540 - Jul 18, 10:30 UTCJul 18, 11:50 UTC1h 20m
2026-07-18 AAL961 CVG → DFW Jul 18, 02:55 UTCJul 18, 04:55 UTC2h 0m
2026-07-18 AAL961 CVG → DFW Jul 18, 02:53 UTCJul 18, 04:52 UTC1h 59m
2026-07-18 AAL2412 - Jul 18, 00:25 UTCJul 18, 01:15 UTC50m
2026-07-18 AAL2412 RIC → CLT Jul 18, 00:20 UTCJul 18, 01:10 UTC50m

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 N816NN page for operator, model, and routing details .

Mode-S AB20DF frequently asked

What is Mode-S code AB20DF?
AB20DF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N816NN.
Where is Mode-S AB20DF registered?
Mode-S code AB20DF 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 AB20DF 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 AB20DF, octal 52620337, decimal 11,215,071.
What flights does AB20DF operate?
Mode-S AB20DF has broadcast 20 distinct callsigns, including AAL2460, AAL2418, AAL1728, AAL695, AAL1913.