Apparatus

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sensors Mode-S transponder

AAD981

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N799AN · BOEING 777-200 · operated by AMERICAN AIRLINES INC

Hex
AAD981
Octal
52554601
Decimal
11,196,801
Country
US
Tail
N799AN
Type
B772
No current signal · last broadcast 9h ago
Flights observed
165
Distinct callsigns
20
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S AAD981.

Country allocation

The ICAO 24-bit address AAD981 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
AAL785 American Airlines 10 2026-06-07
AAL94 American Airlines 9 2026-06-11
AAL784 American Airlines 9 2026-06-06
AAL43 American Airlines 9 2026-05-31
AAL199 American Airlines 7 2026-06-11
AAL95 American Airlines 6 2026-06-12
AAL69 American Airlines 6 2026-05-28
AAL123 American Airlines 6 2026-05-18
AAL721 American Airlines 4 2026-06-02
AAL705 American Airlines 4 2026-06-08
AAL704 American Airlines 4 2026-06-07
AAL61 American Airlines 4 2026-05-19
AAL60 American Airlines 4 2026-05-20
AAL49 American Airlines 4 2026-04-17
AAL42 American Airlines 4 2026-04-13
AAL36 American Airlines 4 2026-05-27
AAL325 American Airlines 4 2026-06-05
AAL198 American Airlines 4 2026-06-10
AAL116 American Airlines 4 2026-05-19
AAL908 American Airlines 3 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 AAL95 MAD → JFK Jun 12, 08:55 UTCJun 12, 15:50 UTC6h 55m
2026-06-12 AAL95 MAD → JFK Jun 12, 08:53 UTCJun 12, 15:49 UTC6h 56m
2026-06-11 AAL94 JFK → MAD Jun 11, 20:45 UTCJun 11, 22:15 UTC1h 30m
2026-06-11 AAL94 JFK → MAD Jun 11, 20:43 UTCJun 12, 03:32 UTC6h 49m
2026-06-11 AAL199 MXP → JFK Jun 11, 09:30 UTCJun 11, 17:40 UTC8h 10m
2026-06-10 AAL198 JFK → MXP Jun 10, 23:19 UTCJun 11, 06:15 UTC6h 56m
2026-06-10 AAL198 JFK → MXP Jun 10, 23:20 UTCJun 11, 06:20 UTC7h 0m
2026-06-10 AAL95 MAD → JFK Jun 10, 08:50 UTCJun 10, 15:50 UTC7h 0m
2026-06-09 AAL94 JFK → MAD Jun 9, 20:45 UTCJun 10, 02:15 UTC5h 30m
2026-06-09 AAL94 JFK → MAD Jun 9, 20:40 UTCJun 10, 03:14 UTC6h 34m
2026-06-09 AAL95 MAD → JFK Jun 9, 08:35 UTCJun 9, 09:50 UTC1h 15m
2026-06-09 AAL95 MAD → JFK Jun 9, 08:35 UTCJun 9, 15:51 UTC7h 16m
2026-06-08 AAL748 CLT → MAD Jun 8, 22:30 UTCJun 8, 23:25 UTC55m
2026-06-08 AAL748 CLT → MAD Jun 8, 22:28 UTCJun 9, 05:51 UTC7h 23m
2026-06-08 AAL705 FRA → CLT Jun 8, 13:30 UTCJun 8, 16:00 UTC2h 30m
2026-06-08 AAL705 FRA → CLT Jun 8, 07:40 UTCJun 8, 09:20 UTC1h 40m
2026-06-07 AAL704 CLT → FRA Jun 7, 21:10 UTCJun 8, 05:00 UTC7h 50m
2026-06-07 AAL785 DFW → TUS Jun 7, 07:20 UTCJun 7, 16:15 UTC8h 55m
2026-06-07 AAL785 DFW → TUS Jun 7, 07:15 UTCJun 7, 16:17 UTC9h 2m
2026-06-06 AAL784 DFW → CLT Jun 6, 20:45 UTCJun 7, 04:35 UTC7h 50m
2026-06-05 AAL325 ORD → LGA Jun 5, 09:35 UTCJun 5, 20:50 UTC11h 15m
2026-06-04 AAL334 JFK → ATH Jun 4, 21:25 UTCJun 5, 06:20 UTC8h 55m
2026-06-03 AAL333 ATH → JFK Jun 3, 23:30 UTCJun 3, 23:45 UTC15m
2026-06-03 AAL333 ATH → JFK Jun 3, 13:24 UTCJun 3, 23:23 UTC9h 59m
2026-06-03 AAL333 ATH → JFK Jun 3, 13:05 UTCJun 3, 23:25 UTC10h 20m
2026-06-03 AAL326 PHL → CHS Jun 3, 01:55 UTCJun 3, 11:10 UTC9h 15m
2026-06-02 AAL721 FCO → CLT Jun 2, 12:00 UTCJun 2, 22:00 UTC10h 0m
2026-06-02 AAL721 FCO → CLT Jun 2, 11:56 UTCJun 2, 21:58 UTC10h 2m
2026-06-01 AAL720 CLT → FCO Jun 1, 23:55 UTCJun 2, 08:00 UTC8h 5m
2026-06-01 AAL325 ORD → LGA Jun 1, 20:25 UTCJun 1, 20:45 UTC20m
2026-06-01 AAL325 ORD → LGA Jun 1, 09:25 UTCJun 1, 20:45 UTC11h 20m
2026-06-01 AAL325 ORD → LGA Jun 1, 09:25 UTCJun 1, 20:10 UTC10h 45m
2026-05-31 AAL334 JFK → ATH May 31, 22:05 UTCJun 1, 06:55 UTC8h 50m
2026-05-31 AAL43 LGA → DCA May 31, 10:50 UTCMay 31, 18:15 UTC7h 25m
2026-05-31 AAL43 LGA → DCA May 31, 10:47 UTCMay 31, 18:10 UTC7h 23m
2026-05-30 AAL48 DFW → CDG May 30, 23:00 UTCMay 31, 01:11 UTC2h 11m
2026-05-30 AAL3081 ELP → DFW May 30, 14:50 UTCMay 30, 17:25 UTC2h 35m
2026-05-30 AAL908 EZE → MIA May 30, 02:25 UTCMay 30, 06:15 UTC3h 50m
2026-05-30 AAL908 EZE → MIA May 30, 02:21 UTCMay 30, 10:37 UTC8h 16m
2026-05-30 AAL908 EZE → MIA May 30, 02:21 UTCMay 30, 10:40 UTC8h 19m
2026-05-29 AAL931 MIA → EZE May 29, 01:50 UTCMay 29, 10:00 UTC8h 10m
2026-05-28 AAL69 MAD → MIA May 28, 10:50 UTCMay 28, 19:55 UTC9h 5m
2026-05-28 AAL69 MAD → MIA May 28, 10:46 UTCMay 28, 19:54 UTC9h 8m
2026-05-27 AAL36 DFW → MAD May 27, 22:35 UTCMay 28, 07:20 UTC8h 45m
2026-05-27 - DFW → DFW May 27, 19:15 UTCMay 27, 19:25 UTC10m
2026-05-26 AAL201 AUS → DFW May 26, 18:34 UTCMay 26, 18:45 UTC10m
2026-05-26 AAL201 AUS → DFW May 26, 07:55 UTCMay 26, 18:30 UTC10h 35m
2026-05-25 AAL200 PIT → PHL May 25, 20:23 UTCMay 26, 05:39 UTC9h 16m
2026-05-25 AAL200 PIT → PHL May 25, 19:40 UTCMay 26, 05:40 UTC10h 0m
2026-05-25 AAL3081 ELP → DFW May 25, 14:40 UTCMay 25, 17:25 UTC2h 45m

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 N799AN page for operator, model, and routing details .

Mode-S AAD981 frequently asked

What is Mode-S code AAD981?
AAD981 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N799AN.
Where is Mode-S AAD981 registered?
Mode-S code AAD981 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 AAD981 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAD981, octal 52554601, decimal 11,196,801.
What flights does AAD981 operate?
Mode-S AAD981 has broadcast 20 distinct callsigns, including AAL785, AAL94, AAL784, AAL43, AAL199.