Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADBB39

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N984NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ADBB39
Octal
53335471
Decimal
11,385,657
Country
US
Tail
N984NN
Type
B738
Broadcasting now · callsign AAL2945 · 36,000 ft
Flights observed
475
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:15 UTC

Current position

ADBB39 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADBB39 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
AAL1548 - 5 2026-07-03
AAL1346 - 5 2026-07-02
AAL564 American Airlines 4 2026-07-23
AAL3300 American Airlines 4 2026-07-24
AAL3269 American Airlines 4 2026-05-13
AAL3192 - 4 2026-06-25
AAL2711 American Airlines 4 2026-04-18
AAL2358 - 4 2026-04-13
AAL1713 - 4 2026-06-12
AAL1598 American Airlines 4 2026-06-23
AAL1080 American Airlines 4 2026-05-12
AAL684R - 3 2026-06-16
AAL380P American Airlines 3 2026-05-01
AAL3294 - 3 2026-04-13
AAL3280 American Airlines 3 2026-04-13
AAL319 - 3 2026-07-17
AAL2992 - 3 2026-07-21
AAL2751 American Airlines 3 2026-05-14
AAL2669 American Airlines 3 2026-05-11
AAL2580 American Airlines 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1855 ORD → LAS Jul 26, 21:05 UTCJul 26, 22:15 UTC1h 10m
2026-07-26 AAL1855 ORD → LAS Jul 26, 17:40 UTCJul 26, 19:55 UTC2h 15m
2026-07-26 AAL551 PHL → MIA Jul 26, 13:40 UTCJul 26, 14:15 UTC35m
2026-07-26 AAL551 PHL → MIA Jul 26, 13:37 UTCJul 26, 16:09 UTC2h 32m
2026-07-26 AAL1183 BWI → MIA Jul 26, 10:05 UTCJul 26, 12:15 UTC2h 10m
2026-07-25 AAL1495 DFW → LIR Jul 25, 23:15 UTCJul 26, 00:15 UTC1h 0m
2026-07-25 AAL2573 CLT → DFW Jul 25, 20:00 UTCJul 25, 21:15 UTC1h 15m
2026-07-25 AAL2573 CLT → DFW Jul 25, 17:10 UTCJul 25, 18:15 UTC1h 5m
2026-07-25 AAL2427 IAH → PHL Jul 25, 14:05 UTCJul 25, 15:30 UTC1h 25m
2026-07-25 AAL2427 IAH → PHL Jul 25, 14:04 UTCJul 25, 15:31 UTC1h 27m
2026-07-25 AAL2427 IAH → PHL Jul 25, 11:30 UTCJul 25, 13:00 UTC1h 30m
2026-07-25 AAL1212 PHL → PHX Jul 25, 03:00 UTCJul 25, 04:30 UTC1h 30m
2026-07-24 AAL3300 DFW → LIT Jul 24, 22:05 UTCJul 25, 01:15 UTC3h 10m
2026-07-24 AAL3300 DFW → LIT Jul 24, 22:01 UTCJul 25, 01:14 UTC3h 13m
2026-07-24 AAL3300 DFW → LIT Jul 24, 20:20 UTCJul 24, 20:45 UTC25m
2026-07-24 AAL3300 DFW → LIT Jul 24, 18:25 UTCJul 24, 18:45 UTC20m
2026-07-24 AAL1469 MIA → SDF Jul 24, 15:40 UTCJul 24, 17:00 UTC1h 20m
2026-07-24 AAL2494 MIA → CUN Jul 24, 13:10 UTCJul 24, 14:20 UTC1h 10m
2026-07-24 AAL1596 BNA → PHL Jul 24, 03:25 UTCJul 24, 04:50 UTC1h 25m
2026-07-23 AAL2917 DCA → CLT Jul 23, 23:35 UTCJul 24, 01:00 UTC1h 25m
2026-07-23 AAL1915 RIC → DFW Jul 23, 19:05 UTCJul 23, 21:20 UTC2h 15m
2026-07-23 AAL1915 RIC → DFW Jul 23, 19:03 UTCJul 23, 21:17 UTC2h 14m
2026-07-23 AAL1915 RIC → DFW Jul 23, 15:20 UTCJul 23, 17:15 UTC1h 55m
2026-07-23 AAL2112 BUF → ORD Jul 23, 12:15 UTCJul 23, 13:55 UTC1h 40m
2026-07-23 AAL564 LGA → DFW Jul 23, 02:00 UTCJul 23, 03:05 UTC1h 5m
2026-07-23 AAL564 LGA → DFW Jul 23, 01:57 UTCJul 23, 03:01 UTC1h 4m
2026-07-22 AAL1717 ORD → YVR Jul 22, 21:05 UTCJul 23, 00:15 UTC3h 10m
2026-07-22 AAL1717 ORD → YVR Jul 22, 15:40 UTCJul 22, 19:45 UTC4h 5m
2026-07-22 AAL3267 - Jul 22, 11:10 UTCJul 22, 13:20 UTC2h 10m
2026-07-21 AAL2999 PIT → PHL Jul 21, 23:50 UTCJul 22, 02:50 UTC3h 0m
2026-07-21 AAL1529 DFW → GRR Jul 21, 18:45 UTCJul 21, 21:25 UTC2h 40m
2026-07-21 AAL1529 DFW → GRR Jul 21, 18:43 UTCJul 21, 21:25 UTC2h 42m
2026-07-21 AAL1529 DFW → GRR Jul 21, 14:55 UTCJul 21, 17:25 UTC2h 30m
2026-07-21 AAL1254 - Jul 21, 11:25 UTCJul 21, 13:25 UTC2h 0m
2026-07-21 AAL2992 - Jul 21, 01:00 UTCJul 21, 02:55 UTC1h 55m
2026-07-20 AAL2213 - Jul 20, 20:55 UTCJul 20, 23:05 UTC2h 10m
2026-07-20 AAL2213 MYR → DFW Jul 20, 20:47 UTCJul 20, 23:05 UTC2h 18m
2026-07-20 AAL2213 - Jul 20, 17:05 UTCJul 20, 19:10 UTC2h 5m
2026-07-20 AAL1544 SMF → DFW Jul 20, 12:40 UTCJul 20, 15:45 UTC3h 5m
2026-07-20 AAL1094 CLT → BOS Jul 20, 05:20 UTCJul 20, 09:05 UTC3h 45m
2026-07-20 AAL2066 MCO → ORD Jul 20, 00:10 UTCJul 20, 02:40 UTC2h 30m
2026-07-20 AAL2066 MCO → ORD Jul 20, 00:10 UTCJul 20, 02:40 UTC2h 30m
2026-07-19 AAL2066 - Jul 19, 20:20 UTCJul 19, 22:20 UTC2h 0m
2026-07-19 AAL2433 RSW → ORD Jul 19, 15:50 UTCJul 19, 18:30 UTC2h 40m
2026-07-19 AAL2433 - Jul 19, 12:00 UTCJul 19, 14:25 UTC2h 25m
2026-07-18 AAL814 LAX → PHL Jul 18, 23:25 UTCJul 19, 02:35 UTC3h 10m
2026-07-18 AAL814 LAX → PHL Jul 18, 19:00 UTCJul 18, 22:20 UTC3h 20m
2026-07-18 AAL2614 - Jul 18, 13:10 UTCJul 18, 17:05 UTC3h 55m
2026-07-18 AAL686 - Jul 18, 06:20 UTCJul 18, 07:50 UTC1h 30m
2026-07-18 AAL2576 LGA → RDU Jul 18, 03:35 UTCJul 18, 05:10 UTC1h 35m

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 N984NN page for operator, model, and routing details .

Mode-S ADBB39 frequently asked

What is Mode-S code ADBB39?
ADBB39 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N984NN.
Where is Mode-S ADBB39 registered?
Mode-S code ADBB39 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 ADBB39 broadcasting right now?
Yes. Mode-S ADBB39 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADBB39, octal 53335471, decimal 11,385,657.
What flights does ADBB39 operate?
Mode-S ADBB39 has broadcast 20 distinct callsigns, including AAL1548, AAL1346, AAL564, AAL3300, AAL3269.