Apparatus

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sensors Mode-S transponder

A9CB18

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N730AN · BOEING 777-300ER · operated by AMERICAN AIRLINES INC

Hex
A9CB18
Octal
52345430
Decimal
11,127,576
Country
US
Tail
N730AN
Type
B77W
No current signal · last broadcast 11d ago
Flights observed
211
Distinct callsigns
20
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S A9CB18.

Country allocation

The ICAO 24-bit address A9CB18 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
AAL953 American Airlines 14 2026-07-22
AAL141 - 14 2026-07-17
AAL731 American Airlines 13 2026-07-02
AAL954 American Airlines 12 2026-07-23
AAL930 - 12 2026-06-19
AAL730 - 12 2026-07-02
AAL39 - 11 2026-07-05
AAL38 - 10 2026-07-05
AAL142 - 10 2026-07-23
AAL51 American Airlines 9 2026-07-24
AAL929 - 8 2026-06-18
AAL72 American Airlines 8 2026-07-07
AAL734 - 7 2026-06-26
AAL73 - 6 2026-07-07
AAL137 - 6 2026-07-06
AAL78 - 5 2026-07-17
AAL735 American Airlines 5 2026-06-05
AAL217 American Airlines 5 2026-07-25
AAL20 - 5 2026-07-04
AAL81 - 4 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AAL217 CLT → AUS Jul 25, 12:34 UTCJul 26, 00:14 UTC11h 40m
2026-07-25 AAL217 CLT → AUS Jul 25, 12:35 UTCJul 26, 00:15 UTC11h 40m
2026-07-25 AAL216 SFO → DFW Jul 25, 00:50 UTCJul 25, 08:00 UTC7h 10m
2026-07-24 AAL216 SFO → DFW Jul 24, 21:20 UTCJul 25, 00:45 UTC3h 25m
2026-07-24 AAL51 LHR → DFW Jul 24, 08:25 UTCJul 24, 17:40 UTC9h 15m
2026-07-23 AAL142 - Jul 23, 15:00 UTCJul 23, 19:55 UTC4h 55m
2026-07-23 AAL142 - Jul 23, 13:55 UTCJul 23, 14:55 UTC1h 0m
2026-07-23 AAL954 EZE → JFK Jul 23, 00:20 UTCJul 23, 10:20 UTC10h 0m
2026-07-23 AAL954 EZE → JFK Jul 23, 00:18 UTCJul 23, 10:16 UTC9h 58m
2026-07-22 AAL953 JFK → EZE Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-22 AAL953 JFK → EZE Jul 22, 04:21 UTCJul 22, 15:16 UTC10h 55m
2026-07-21 AAL954 EZE → JFK Jul 21, 03:05 UTCJul 21, 13:30 UTC10h 25m
2026-07-21 AAL954 EZE → JFK Jul 21, 03:03 UTCJul 21, 13:21 UTC10h 18m
2026-07-20 AAL953 - Jul 20, 04:05 UTCJul 20, 07:30 UTC3h 25m
2026-07-20 AAL953 JFK → EZE Jul 20, 04:06 UTCJul 20, 14:13 UTC10h 7m
2026-07-19 AAL954 - Jul 19, 00:15 UTCJul 19, 10:15 UTC10h 0m
2026-07-18 AAL953 - Jul 18, 06:15 UTCJul 18, 07:40 UTC1h 25m
2026-07-18 AAL953 - Jul 18, 03:40 UTCJul 18, 04:00 UTC20m
2026-07-18 AAL953 JFK → EZE Jul 18, 03:37 UTCJul 18, 13:37 UTC10h 0m
2026-07-17 AAL141 - Jul 17, 17:30 UTCJul 18, 00:15 UTC6h 45m
2026-07-17 AAL78 DFW → LHR Jul 17, 05:30 UTCJul 17, 14:20 UTC8h 50m
2026-07-16 AAL81 - Jul 16, 17:14 UTCJul 17, 02:15 UTC9h 0m
2026-07-16 AAL80 DFW → LHR Jul 16, 05:15 UTCJul 16, 14:45 UTC9h 30m
2026-07-16 AAL80 DFW → LHR Jul 16, 05:11 UTCJul 16, 14:34 UTC9h 23m
2026-07-13 AAL217 - Jul 13, 11:55 UTCJul 13, 14:00 UTC2h 5m
2026-07-13 AAL217 ATH → DFW Jul 13, 11:53 UTCJul 13, 23:51 UTC11h 58m
2026-07-13 AAL217 ATH → DFW Jul 13, 11:53 UTCJul 14, 00:00 UTC12h 7m
2026-07-12 AAL216 DFW → ATH Jul 12, 21:35 UTCJul 13, 08:55 UTC11h 20m
2026-07-12 AAL51 LHR → DFW Jul 12, 08:10 UTCJul 12, 17:20 UTC9h 10m
2026-07-11 AAL142 - Jul 11, 14:00 UTCJul 11, 15:30 UTC1h 30m
2026-07-11 AAL142 JFK → LHR Jul 11, 14:00 UTCJul 11, 20:16 UTC6h 16m
2026-07-10 AAL9601 LHR → JFK Jul 10, 08:45 UTCJul 10, 15:55 UTC7h 10m
2026-07-09 AAL136 - Jul 9, 01:50 UTCJul 9, 11:45 UTC9h 55m
2026-07-09 AAL136 LAX → LHR Jul 9, 01:49 UTCJul 9, 11:43 UTC9h 54m
2026-07-07 AAL72 HNL → ORD Jul 7, 23:35 UTCJul 8, 12:10 UTC12h 35m
2026-07-07 AAL73 - Jul 7, 06:25 UTCJul 7, 20:45 UTC14h 20m
2026-07-06 AAL137 - Jul 6, 16:35 UTCJul 7, 03:10 UTC10h 35m
2026-07-06 AAL137 LHR → LAX Jul 6, 16:31 UTCJul 7, 03:09 UTC10h 38m
2026-07-05 AAL38 - Jul 5, 23:50 UTCJul 6, 08:00 UTC8h 10m
2026-07-05 AAL39 - Jul 5, 19:45 UTCJul 5, 20:00 UTC15m
2026-07-05 AAL39 - Jul 5, 11:40 UTCJul 5, 12:35 UTC55m
2026-07-05 AAL39 LHR → MIA Jul 5, 11:36 UTCJul 5, 20:13 UTC8h 37m
2026-07-04 AAL20 DFW → LHR Jul 4, 23:40 UTCJul 5, 08:30 UTC8h 50m
2026-07-03 AAL51 LHR → DFW Jul 3, 08:20 UTCJul 3, 09:35 UTC1h 15m
2026-07-03 AAL51 LHR → DFW Jul 3, 07:55 UTCJul 3, 17:44 UTC9h 49m
2026-07-03 AAL51 LHR → DFW Jul 3, 08:18 UTCJul 3, 17:40 UTC9h 22m
2026-07-02 AAL730 - Jul 2, 22:25 UTCJul 3, 05:20 UTC6h 55m
2026-07-02 AAL731 LHR → CLT Jul 2, 08:35 UTCJul 2, 16:45 UTC8h 10m
2026-07-01 AAL142 JFK → LHR Jul 1, 13:55 UTCJul 1, 20:35 UTC6h 40m
2026-07-01 AAL954 - Jul 1, 00:15 UTCJul 1, 10:10 UTC9h 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 N730AN page for operator, model, and routing details .

Mode-S A9CB18 frequently asked

What is Mode-S code A9CB18?
A9CB18 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N730AN.
Where is Mode-S A9CB18 registered?
Mode-S code A9CB18 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 A9CB18 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9CB18, octal 52345430, decimal 11,127,576.
What flights does A9CB18 operate?
Mode-S A9CB18 has broadcast 20 distinct callsigns, including AAL953, AAL141, AAL731, AAL954, AAL930.