Apparatus

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sensors Mode-S transponder

AB44A7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N825NN · BOEING 737-800 · operated by AMERICAN AIRLINES INC

Hex
AB44A7
Octal
52642247
Decimal
11,224,231
Country
US
Tail
N825NN
Type
B738
No current signal · last broadcast Jul 26, 20:40 UTC
Flights observed
366
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:40 UTC

Last known position

Most recent position reported by Mode-S AB44A7.

Country allocation

The ICAO 24-bit address AB44A7 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
AAL2265 American Airlines 5 2026-05-27
AAL1955 - 5 2026-07-17
AAL1906 - 5 2026-06-21
AAL413 American Airlines 4 2026-05-31
AAL2966 American Airlines 4 2026-07-20
AAL2617 - 4 2026-07-17
AAL2490 - 4 2026-06-20
AAL2278 - 4 2026-06-15
AAL2262 - 4 2026-07-16
AAL2242 American Airlines 4 2026-05-24
AAL2120 American Airlines 4 2026-07-20
AAL2046 - 4 2026-07-09
AAL1521 American Airlines 4 2026-06-06
AAL1495 - 4 2026-07-11
AAL1411 American Airlines 4 2026-06-07
AAL1132 - 4 2026-07-17
AAL491 - 3 2026-04-13
AAL479 - 3 2026-07-01
AAL3165 American Airlines 3 2026-06-07
AAL2582 American Airlines 3 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1609 PHX → DCA Jul 26, 17:30 UTCJul 26, 20:30 UTC3h 0m
2026-07-26 AAL1609 PHX → DCA Jul 26, 13:00 UTCJul 26, 16:10 UTC3h 10m
2026-07-26 AAL1098 MCI → DFW Jul 26, 10:40 UTCJul 26, 11:45 UTC1h 5m
2026-07-26 AAL1732 RDU → LGA Jul 26, 03:55 UTCJul 26, 05:45 UTC1h 50m
2026-07-25 AAL943 CMH → CLT Jul 25, 21:20 UTCJul 26, 01:35 UTC4h 15m
2026-07-25 AAL2052 CLT → ORD Jul 25, 17:20 UTCJul 25, 19:05 UTC1h 45m
2026-07-25 AAL2052 CLT → ORD Jul 25, 14:10 UTCJul 25, 16:00 UTC1h 50m
2026-07-25 AAL418 BOS → CLT Jul 25, 10:20 UTCJul 25, 11:45 UTC1h 25m
2026-07-25 AAL418 BOS → CLT Jul 25, 10:20 UTCJul 25, 12:14 UTC1h 54m
2026-07-24 AAL1461 BOS → ORD Jul 24, 22:40 UTCJul 25, 00:25 UTC1h 45m
2026-07-24 AAL2250 BOS → CLT Jul 24, 18:55 UTCJul 24, 20:50 UTC1h 55m
2026-07-24 AAL2250 BOS → CLT Jul 24, 15:45 UTCJul 24, 17:20 UTC1h 35m
2026-07-24 AAL3106 IAH → ORD Jul 24, 12:00 UTCJul 24, 14:15 UTC2h 15m
2026-07-24 AAL3106 IAH → ORD Jul 24, 11:59 UTCJul 24, 14:14 UTC2h 15m
2026-07-24 AAL3021 DFW → CMH Jul 24, 00:50 UTCJul 24, 03:34 UTC2h 44m
2026-07-24 AAL3021 DFW → CMH Jul 24, 00:55 UTCJul 24, 03:35 UTC2h 40m
2026-07-23 AAL1855 ORD → LAS Jul 23, 20:45 UTCJul 23, 23:10 UTC2h 25m
2026-07-23 AAL1855 ORD → LAS Jul 23, 20:42 UTCJul 23, 23:08 UTC2h 26m
2026-07-23 AAL1855 ORD → LAS Jul 23, 16:30 UTCJul 23, 19:20 UTC2h 50m
2026-07-23 AAL490 PHL → ORD Jul 23, 03:15 UTCJul 23, 04:30 UTC1h 15m
2026-07-22 AAL2520 SEA → ORD Jul 22, 22:00 UTCJul 23, 01:10 UTC3h 10m
2026-07-22 AAL2520 - Jul 22, 16:00 UTCJul 22, 20:10 UTC4h 10m
2026-07-22 AAL354 TPA → ORD Jul 22, 11:10 UTCJul 22, 13:40 UTC2h 30m
2026-07-21 AAL2920 TPA → ORD Jul 21, 18:30 UTCJul 21, 20:45 UTC2h 15m
2026-07-21 AAL3324 BOS → ORD Jul 21, 09:15 UTCJul 21, 11:45 UTC2h 30m
2026-07-21 AAL2539 MIA → BOS Jul 21, 00:50 UTCJul 21, 03:45 UTC2h 55m
2026-07-21 AAL2539 MIA → BOS Jul 21, 00:46 UTCJul 21, 03:50 UTC3h 4m
2026-07-20 AAL2231 DFW → SFO Jul 20, 20:55 UTCJul 20, 22:30 UTC1h 35m
2026-07-20 AAL1819 - Jul 20, 17:50 UTCJul 20, 19:30 UTC1h 40m
2026-07-20 AAL1819 EWR → CLT Jul 20, 17:50 UTCJul 20, 19:29 UTC1h 39m
2026-07-20 AAL1819 - Jul 20, 14:55 UTCJul 20, 16:25 UTC1h 30m
2026-07-20 AAL2966 PHL → CLT Jul 20, 11:25 UTCJul 20, 11:45 UTC20m
2026-07-20 AAL2966 PHL → CLT Jul 20, 11:22 UTCJul 20, 13:15 UTC1h 53m
2026-07-20 AAL2120 DCA → BOS Jul 20, 02:00 UTCJul 20, 03:45 UTC1h 45m
2026-07-20 AAL2120 DCA → BOS Jul 20, 01:58 UTCJul 20, 03:45 UTC1h 47m
2026-07-19 AAL1320 DEN → DFW Jul 19, 22:55 UTCJul 20, 00:15 UTC1h 20m
2026-07-19 AAL1942 - Jul 19, 20:05 UTCJul 19, 21:20 UTC1h 15m
2026-07-19 AAL2363 - Jul 19, 17:50 UTCJul 19, 18:20 UTC30m
2026-07-19 AAL2363 - Jul 19, 16:00 UTCJul 19, 16:30 UTC30m
2026-07-19 AAL2133 - Jul 19, 11:40 UTCJul 19, 13:15 UTC1h 35m
2026-07-19 AAL1272 MIA → BDL Jul 19, 04:00 UTCJul 19, 06:30 UTC2h 30m
2026-07-18 AAL2890 - Jul 18, 17:45 UTCJul 18, 23:35 UTC5h 50m
2026-07-18 AAL1555 DFW → GRR Jul 18, 14:29 UTCJul 18, 16:15 UTC1h 46m
2026-07-18 AAL1555 DFW → GRR Jul 18, 14:30 UTCJul 18, 16:15 UTC1h 45m
2026-07-18 AAL2057 LGA → ORD Jul 18, 02:05 UTCJul 18, 04:05 UTC2h 1m
2026-07-17 AAL2028 SFO → DFW Jul 17, 21:30 UTCJul 18, 00:45 UTC3h 15m
2026-07-17 AAL1955 - Jul 17, 17:44 UTCJul 17, 19:30 UTC1h 45m
2026-07-17 AAL1955 DFW → IND Jul 17, 14:39 UTCJul 17, 16:19 UTC1h 40m
2026-07-17 AAL2617 IAD → DFW Jul 17, 10:30 UTCJul 17, 13:05 UTC2h 35m
2026-07-17 AAL2617 IAD → DFW Jul 17, 10:28 UTCJul 17, 13:01 UTC2h 33m

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 N825NN page for operator, model, and routing details .

Mode-S AB44A7 frequently asked

What is Mode-S code AB44A7?
AB44A7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N825NN.
Where is Mode-S AB44A7 registered?
Mode-S code AB44A7 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 AB44A7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB44A7, octal 52642247, decimal 11,224,231.
What flights does AB44A7 operate?
Mode-S AB44A7 has broadcast 20 distinct callsigns, including AAL2265, AAL1955, AAL1906, AAL413, AAL2966.