Apparatus

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sensors Mode-S transponder

ADC2A7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N986NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
ADC2A7
Octal
53341247
Decimal
11,387,559
Country
US
Tail
N986NN
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
545
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S ADC2A7.

Country allocation

The ICAO 24-bit address ADC2A7 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
AAL2346 American Airlines 7 2026-05-08
AAL1523 - 7 2026-07-07
AAL2989 - 5 2026-04-13
AAL1821 - 5 2026-06-13
AAL1796 American Airlines 5 2026-07-07
AAL3307 American Airlines 4 2026-06-17
AAL3115 American Airlines 4 2026-04-15
AAL301 American Airlines 4 2026-04-16
AAL2804 American Airlines 4 2026-05-19
AAL2703 American Airlines 4 2026-05-16
AAL2616 American Airlines 4 2026-06-11
AAL2013 - 4 2026-07-18
AAL1737 - 4 2026-07-12
AAL1603 - 4 2026-07-06
AAL1006 - 4 2026-07-06
AAL689 - 3 2026-07-15
AAL496 American Airlines 3 2026-05-04
AAL3269 American Airlines 3 2026-04-25
AAL3208 American Airlines 3 2026-04-22
AAL3104 American Airlines 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL814 LAX → PHL Jul 26, 18:45 UTCJul 26, 21:45 UTC3h 0m
2026-07-26 AAL9783 PHL → ORD Jul 26, 14:40 UTCJul 26, 16:55 UTC2h 15m
2026-07-24 AAL2211 RDU → PHL Jul 24, 18:35 UTCJul 24, 20:10 UTC1h 35m
2026-07-24 AAL1978 CLT → BOS Jul 24, 12:45 UTCJul 24, 15:20 UTC2h 35m
2026-07-24 AAL1978 CLT → BOS Jul 24, 12:41 UTCJul 24, 15:17 UTC2h 36m
2026-07-23 AAL2648 MIA → DCA Jul 23, 23:20 UTCJul 23, 23:45 UTC25m
2026-07-23 AAL2648 MIA → DCA Jul 23, 23:16 UTCJul 24, 01:24 UTC2h 8m
2026-07-23 AAL2664 PIT → DFW Jul 23, 19:20 UTCJul 23, 21:45 UTC2h 25m
2026-07-23 AAL2088 JFK → CLT Jul 23, 14:50 UTCJul 23, 17:00 UTC2h 10m
2026-07-23 AAL3173 SPS → DFW Jul 23, 11:30 UTCJul 23, 13:40 UTC2h 10m
2026-07-23 AAL2136 DFW → MLM Jul 23, 00:25 UTCJul 23, 02:20 UTC1h 55m
2026-07-23 AAL2136 DFW → MLM Jul 23, 00:20 UTCJul 23, 02:16 UTC1h 56m
2026-07-22 AAL2136 DFW → MLM Jul 22, 21:05 UTCJul 22, 22:50 UTC1h 45m
2026-07-22 AAL2049 SJC → PHX Jul 22, 16:25 UTCJul 22, 19:35 UTC3h 10m
2026-07-22 AAL203Q LAX → DFW Jul 22, 11:15 UTCJul 22, 13:55 UTC2h 40m
2026-07-21 AAL1441 CLT → BOS Jul 21, 23:50 UTCJul 22, 03:05 UTC3h 15m
2026-07-21 AAL1822 PHL → CLT Jul 21, 13:05 UTCJul 21, 15:45 UTC2h 40m
2026-07-21 AAL1822 PHL → CLT Jul 21, 12:59 UTCJul 21, 15:59 UTC3h 0m
2026-07-21 AAL1233 - Jul 21, 02:30 UTCJul 21, 04:30 UTC2h 0m
2026-07-20 AAL472 DFW → DCA Jul 20, 22:30 UTCJul 21, 01:00 UTC2h 30m
2026-07-20 AAL1177 ORD → PHL Jul 20, 18:05 UTCJul 20, 20:35 UTC2h 30m
2026-07-20 AAL1177 ORD → PHL Jul 20, 18:03 UTCJul 20, 20:34 UTC2h 31m
2026-07-20 AAL1177 ORD → PHL Jul 20, 14:05 UTCJul 20, 16:45 UTC2h 40m
2026-07-20 AAL2563 AUS → DFW Jul 20, 11:10 UTCJul 20, 11:50 UTC40m
2026-07-20 AAL1715 DTW → DFW Jul 20, 02:21 UTCJul 20, 04:22 UTC2h 1m
2026-07-20 AAL1715 DTW → DFW Jul 20, 02:25 UTCJul 20, 04:25 UTC2h 0m
2026-07-19 AAL1915 RIC → DFW Jul 19, 21:50 UTCJul 20, 00:25 UTC2h 35m
2026-07-19 AAL1915 RIC → DFW Jul 19, 18:20 UTCJul 19, 20:20 UTC2h 0m
2026-07-19 AAL3100 LGA → ORD Jul 19, 14:40 UTCJul 19, 16:55 UTC2h 15m
2026-07-19 AAL327 JFK → CLT Jul 19, 11:30 UTCJul 19, 13:00 UTC1h 30m
2026-07-18 AAL2013 LAS → ORD Jul 18, 23:22 UTCJul 19, 02:38 UTC3h 16m
2026-07-18 AAL2013 LAS → ORD Jul 18, 23:25 UTCJul 19, 02:40 UTC3h 15m
2026-07-18 AAL2023 DFW → SFO Jul 18, 21:00 UTCJul 18, 21:50 UTC50m
2026-07-18 AAL2042 AUS → PHX Jul 18, 17:30 UTCJul 18, 19:30 UTC2h 0m
2026-07-18 AAL2218 DFW → PBI Jul 18, 14:10 UTCJul 18, 16:15 UTC2h 5m
2026-07-18 AAL2949 LAS → ORD Jul 18, 09:00 UTCJul 18, 12:25 UTC3h 25m
2026-07-18 AAL2949 LAS → ORD Jul 18, 08:58 UTCJul 18, 12:11 UTC3h 13m
2026-07-18 AAL1880 ORD → LAS Jul 18, 04:40 UTCJul 18, 07:40 UTC3h 0m
2026-07-18 AAL1554 BOS → ORD Jul 18, 00:10 UTCJul 18, 02:35 UTC2h 25m
2026-07-17 AAL1554 ORD → BOS Jul 17, 19:55 UTCJul 17, 21:39 UTC1h 45m
2026-07-17 AAL489 DCA → ORD Jul 17, 15:44 UTCJul 17, 17:20 UTC1h 35m
2026-07-17 AAL1299 - Jul 17, 12:19 UTCJul 17, 14:30 UTC2h 10m
2026-07-17 AAL1931 - Jul 17, 00:40 UTCJul 17, 02:39 UTC2h 0m
2026-07-16 AAL1931 - Jul 16, 20:49 UTCJul 16, 22:59 UTC2h 10m
2026-07-16 AAL815 BOS → MIA Jul 16, 15:19 UTCJul 16, 18:05 UTC2h 45m
2026-07-16 AAL815 - Jul 16, 11:05 UTCJul 16, 13:54 UTC2h 50m
2026-07-16 AAL1596 - Jul 16, 03:00 UTCJul 16, 04:35 UTC1h 35m
2026-07-16 AAL1596 CLT → MIA Jul 16, 02:57 UTCJul 16, 04:32 UTC1h 35m
2026-07-15 AAL1573 BOS → CLT Jul 15, 22:29 UTCJul 16, 00:30 UTC2h 1m
2026-07-15 AAL1573 - Jul 15, 22:30 UTCJul 16, 00:25 UTC1h 55m

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 N986NN page for operator, model, and routing details .

Mode-S ADC2A7 frequently asked

What is Mode-S code ADC2A7?
ADC2A7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N986NN.
Where is Mode-S ADC2A7 registered?
Mode-S code ADC2A7 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 ADC2A7 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 ADC2A7, octal 53341247, decimal 11,387,559.
What flights does ADC2A7 operate?
Mode-S ADC2A7 has broadcast 20 distinct callsigns, including AAL2346, AAL1523, AAL2989, AAL1821, AAL1796.