Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADDF01

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N993NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ADDF01
Octal
53357401
Decimal
11,394,817
Country
US
Tail
N993NN
Type
B738
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
516
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S ADDF01.

Country allocation

The ICAO 24-bit address ADDF01 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
AAL874 - 9 2026-07-19
AAL3007 American Airlines 5 2026-07-21
AAL2702 American Airlines 5 2026-06-17
AAL2439 American Airlines 5 2026-06-18
AAL1911 American Airlines 5 2026-05-27
AAL2654 American Airlines 4 2026-05-07
AAL2581 American Airlines 4 2026-05-31
AAL2101 American Airlines 4 2026-04-16
AAL2052 - 4 2026-07-18
AAL1890 - 4 2026-07-17
AAL1868 American Airlines 4 2026-05-26
AAL1624 American Airlines 4 2026-07-25
AAL1620 - 4 2026-07-05
AAL1020 American Airlines 4 2026-05-10
AAL814 - 3 2026-06-26
AAL695 American Airlines 3 2026-07-22
AAL679 American Airlines 3 2026-06-05
AAL650 American Airlines 3 2026-05-04
AAL483 American Airlines 3 2026-06-01
AAL475 American Airlines 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2638 ORF → DFW Jul 26, 20:00 UTCJul 26, 21:25 UTC1h 25m
2026-07-25 AAL902 CID → DFW Jul 25, 23:35 UTCJul 26, 15:30 UTC15h 56m
2026-07-25 AAL2664 PIT → DFW Jul 25, 19:20 UTCJul 25, 21:25 UTC2h 5m
2026-07-25 AAL2664 PIT → DFW Jul 25, 19:17 UTCJul 25, 21:23 UTC2h 6m
2026-07-25 AAL1624 PHL → LAS Jul 25, 15:20 UTCJul 25, 17:55 UTC2h 35m
2026-07-25 AAL2782 IND → DFW Jul 25, 10:15 UTCJul 25, 12:10 UTC1h 55m
2026-07-25 AAL766 PHL → BGR Jul 25, 02:05 UTCJul 25, 03:45 UTC1h 40m
2026-07-25 AAL766 PHL → BGR Jul 25, 02:04 UTCJul 25, 03:44 UTC1h 40m
2026-07-24 AAL684R STT → CLT Jul 24, 21:55 UTCJul 25, 00:45 UTC2h 50m
2026-07-24 AAL2684 PHL → PHX Jul 24, 17:35 UTCJul 24, 20:05 UTC2h 30m
2026-07-24 AAL2684 PHL → PHX Jul 24, 17:32 UTCJul 24, 20:02 UTC2h 30m
2026-07-24 AAL1303 EWR → DFW Jul 24, 12:10 UTCJul 24, 15:10 UTC3h 0m
2026-07-24 AAL2999 PIT → PHL Jul 24, 00:35 UTCJul 24, 03:40 UTC3h 5m
2026-07-23 AAL2213 CLT → BDL Jul 23, 20:55 UTCJul 23, 23:05 UTC2h 10m
2026-07-23 AAL2213 CLT → BDL Jul 23, 17:30 UTCJul 23, 19:30 UTC2h 0m
2026-07-23 AAL1390 DFW → FLL Jul 23, 15:00 UTCJul 23, 16:05 UTC1h 5m
2026-07-23 AAL2180 RDU → LGA Jul 23, 12:30 UTCJul 23, 14:00 UTC1h 30m
2026-07-23 AAL1212 PHL → PHX Jul 23, 02:55 UTCJul 23, 04:25 UTC1h 30m
2026-07-22 AAL2111 LGA → BNA Jul 22, 23:10 UTCJul 23, 01:40 UTC2h 30m
2026-07-22 AAL695 MIA → DFW Jul 22, 18:50 UTCJul 22, 21:10 UTC2h 20m
2026-07-22 AAL695 MIA → DFW Jul 22, 18:45 UTCJul 22, 21:00 UTC2h 15m
2026-07-22 AAL695 MIA → DFW Jul 22, 15:10 UTCJul 22, 17:30 UTC2h 20m
2026-07-21 AAL3007 ORD → BNA Jul 21, 16:05 UTCJul 22, 01:20 UTC9h 15m
2026-07-21 AAL1146 BOS → PHL Jul 21, 10:20 UTCJul 21, 11:20 UTC1h 0m
2026-07-20 AAL1048 CLT → LGA Jul 20, 22:40 UTCJul 21, 01:55 UTC3h 15m
2026-07-20 AAL1441 CLT → BOS Jul 20, 16:40 UTCJul 20, 19:40 UTC3h 0m
2026-07-20 AAL1441 CLT → BOS Jul 20, 16:39 UTCJul 20, 19:36 UTC2h 57m
2026-07-20 AAL1822 PHL → CLT Jul 20, 12:40 UTCJul 20, 15:00 UTC2h 20m
2026-07-20 AAL1165 BOS → PHL Jul 20, 09:25 UTCJul 20, 10:55 UTC1h 30m
2026-07-20 AAL1165 BOS → PHL Jul 20, 09:23 UTCJul 20, 10:55 UTC1h 32m
2026-07-20 AAL1811 - Jul 20, 04:00 UTCJul 20, 05:20 UTC1h 20m
2026-07-20 AAL1811 - Jul 20, 00:50 UTCJul 20, 02:10 UTC1h 20m
2026-07-19 AAL874 - Jul 19, 19:20 UTCJul 19, 23:00 UTC3h 40m
2026-07-19 AAL874 - Jul 19, 17:35 UTCJul 19, 17:50 UTC15m
2026-07-19 AAL874 - Jul 19, 14:15 UTCJul 19, 16:55 UTC2h 40m
2026-07-19 AAL2938 EWR → PHX Jul 19, 11:30 UTCJul 19, 12:30 UTC1h 0m
2026-07-19 AAL1033 PHL → CLT Jul 19, 04:15 UTCJul 19, 05:20 UTC1h 5m
2026-07-19 AAL1033 PHL → CLT Jul 19, 04:14 UTCJul 19, 05:17 UTC1h 3m
2026-07-19 AAL2338 - Jul 19, 00:35 UTCJul 19, 02:40 UTC2h 5m
2026-07-19 AAL2338 PVD → CLT Jul 19, 00:34 UTCJul 19, 02:31 UTC1h 57m
2026-07-18 AAL2338 - Jul 18, 20:45 UTCJul 18, 22:20 UTC1h 35m
2026-07-18 AAL2052 - Jul 18, 17:30 UTCJul 18, 19:20 UTC1h 50m
2026-07-18 AAL2052 - Jul 18, 14:10 UTCJul 18, 16:00 UTC1h 50m
2026-07-18 AAL1097 - Jul 18, 10:25 UTCJul 18, 11:55 UTC1h 30m
2026-07-18 AAL1176 - Jul 18, 02:14 UTCJul 18, 03:45 UTC1h 31m
2026-07-17 AAL2352 - Jul 17, 22:40 UTCJul 18, 00:45 UTC2h 5m
2026-07-17 AAL2352 - Jul 17, 19:05 UTCJul 17, 20:55 UTC1h 50m
2026-07-17 AAL1890 - Jul 17, 16:04 UTCJul 17, 17:25 UTC1h 20m
2026-07-17 AAL1890 - Jul 17, 13:20 UTCJul 17, 14:39 UTC1h 20m
2026-07-17 AAL2632 - Jul 17, 09:15 UTCJul 17, 10:15 UTC1h 0m

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 N993NN page for operator, model, and routing details .

Mode-S ADDF01 frequently asked

What is Mode-S code ADDF01?
ADDF01 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N993NN.
Where is Mode-S ADDF01 registered?
Mode-S code ADDF01 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 ADDF01 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADDF01, octal 53357401, decimal 11,394,817.
What flights does ADDF01 operate?
Mode-S ADDF01 has broadcast 20 distinct callsigns, including AAL874, AAL3007, AAL2702, AAL2439, AAL1911.