Apparatus

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sensors Mode-S transponder

A4FC9A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N420LA · BOEING 767-300 · operated by CAIQUEN LEASING LLC

Hex
A4FC9A
Octal
51176232
Decimal
10,812,570
Country
US
Tail
N420LA
Type
B763
No current signal · last broadcast 13h ago
Flights observed
248
Distinct callsigns
20
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A4FC9A.

Country allocation

The ICAO 24-bit address A4FC9A 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
LCO3613 - 11 2026-07-09
LCO3617 LAN Cargo 9 2026-06-15
LCO1513 LAN Cargo 9 2026-05-28
LTG8517 - 8 2026-07-06
LCO1516 LAN Cargo 7 2026-05-31
LCO1514 LAN Cargo 7 2026-04-17
LAE1803 - 7 2026-07-01
LCO3607 - 6 2026-06-25
LAE2874 - 5 2026-07-01
LAE2530 LATAM Cargo Colombia 5 2026-05-21
LTG8507 - 4 2026-07-05
LCO1504 LAN Cargo 4 2026-06-16
LAE1820 LATAM Cargo Colombia 4 2026-06-17
LAE1801 - 4 2026-06-18
LTG8503 - 3 2026-07-06
LNE317 LATAM Airlines Ecuador 3 2026-04-15
LCO3616 - 3 2026-06-28
LCO3606 - 3 2026-07-09
LCO3603 - 3 2026-07-07
LCO1503 LAN Cargo 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LAE2506 - Jul 13, 14:05 UTCJul 13, 17:15 UTC3h 10m
2026-07-13 LAE2503 - Jul 13, 09:35 UTCJul 13, 12:00 UTC2h 25m
2026-07-13 LAE2503 - Jul 13, 02:15 UTCJul 13, 07:15 UTC5h 0m
2026-07-12 LTG8478 - Jul 12, 20:15 UTCJul 12, 23:25 UTC3h 10m
2026-07-12 LTG8478 - Jul 12, 13:25 UTCJul 12, 18:30 UTC5h 5m
2026-07-12 LTG8516 - Jul 12, 10:45 UTCJul 12, 11:05 UTC20m
2026-07-11 LTG8516 - Jul 11, 17:10 UTCJul 12, 07:40 UTC14h 30m
2026-07-11 LTG8506 - Jul 11, 06:25 UTCJul 11, 15:20 UTC8h 55m
2026-07-10 LNE518 - Jul 10, 16:10 UTCJul 11, 01:40 UTC9h 30m
2026-07-10 LAE1818 - Jul 10, 07:30 UTCJul 10, 10:20 UTC2h 50m
2026-07-10 LAE1817 - Jul 10, 02:55 UTCJul 10, 05:40 UTC2h 45m
2026-07-09 LCO3606 - Jul 9, 14:55 UTCJul 9, 20:10 UTC5h 15m
2026-07-09 LCO3606 - Jul 9, 12:00 UTCJul 9, 12:10 UTC10m
2026-07-09 LCO3613 - Jul 9, 03:35 UTCJul 9, 06:05 UTC2h 30m
2026-07-08 LCO3613 - Jul 8, 14:45 UTCJul 9, 02:05 UTC11h 20m
2026-07-08 LCO3613 - Jul 8, 08:35 UTCJul 8, 10:25 UTC1h 50m
2026-07-07 LCO3603 - Jul 7, 21:55 UTCJul 8, 06:40 UTC8h 45m
2026-07-07 LNE214 - Jul 7, 06:10 UTCJul 7, 18:55 UTC12h 45m
2026-07-06 LTG8503 - Jul 6, 14:25 UTCJul 6, 14:45 UTC20m
2026-07-06 LTG8503 - Jul 6, 03:55 UTCJul 6, 08:30 UTC4h 35m
2026-07-06 LTG8517 - Jul 6, 02:20 UTCJul 6, 02:35 UTC15m
2026-07-05 LTG8517 - Jul 5, 11:20 UTCJul 6, 00:50 UTC13h 30m
2026-07-05 LTG8507 - Jul 5, 00:10 UTCJul 5, 08:40 UTC8h 30m
2026-07-04 LAE2520 - Jul 4, 21:20 UTCJul 4, 21:45 UTC25m
2026-07-04 LAE2519 - Jul 4, 07:50 UTCJul 4, 12:10 UTC4h 20m
2026-07-04 LAE2519 - Jul 4, 05:50 UTCJul 4, 06:15 UTC25m
2026-07-03 LAE2519 - Jul 3, 20:00 UTCJul 4, 04:05 UTC8h 5m
2026-07-03 LTG9832 - Jul 3, 09:00 UTCJul 3, 09:25 UTC25m
2026-07-02 LTG9832 - Jul 2, 21:25 UTCJul 2, 23:40 UTC2h 15m
2026-07-02 LTG9827 - Jul 2, 18:55 UTCJul 2, 19:45 UTC50m
2026-07-02 LTG8511 - Jul 2, 16:35 UTCJul 2, 17:25 UTC50m
2026-07-02 LAE2538 - Jul 2, 12:10 UTCJul 2, 13:25 UTC1h 15m
2026-07-02 LAE2538 - Jul 2, 03:00 UTCJul 2, 10:05 UTC7h 5m
2026-07-01 LAE1804 - Jul 1, 20:50 UTCJul 1, 23:15 UTC2h 25m
2026-07-01 LAE1803 - Jul 1, 17:45 UTCJul 1, 18:10 UTC25m
2026-07-01 LAE1803 - Jul 1, 15:05 UTCJul 1, 15:20 UTC15m
2026-07-01 LAE1803 - Jul 1, 13:05 UTCJul 1, 14:35 UTC1h 30m
2026-07-01 LAE2874 - Jul 1, 06:55 UTCJul 1, 07:30 UTC35m
2026-06-30 LAE2803 - Jun 30, 01:55 UTCJun 30, 04:15 UTC2h 20m
2026-06-29 LTG8484 - Jun 29, 04:14 UTCJun 29, 18:05 UTC13h 50m
2026-06-28 LCO3616 - Jun 28, 07:20 UTCJun 29, 01:29 UTC18h 10m
2026-06-27 LCO3616 - Jun 27, 15:14 UTCJun 28, 04:44 UTC13h 30m
2026-06-27 LCO3616 - Jun 27, 10:29 UTCJun 27, 11:14 UTC45m
2026-06-26 LCO3606 - Jun 26, 23:44 UTCJun 27, 08:14 UTC8h 30m
2026-06-26 LNE516 - Jun 26, 20:50 UTCJun 26, 21:10 UTC20m
2026-06-26 LNE515 - Jun 26, 07:45 UTCJun 26, 19:35 UTC11h 50m
2026-06-25 LCO3607 - Jun 25, 17:05 UTCJun 25, 19:15 UTC2h 10m
2026-06-25 LCO3613 - Jun 25, 06:00 UTCJun 25, 06:40 UTC40m
2026-06-25 LCO3613 - Jun 25, 02:54 UTCJun 25, 04:45 UTC1h 50m
2026-06-24 LCO3613 - Jun 24, 12:40 UTCJun 25, 00:05 UTC11h 25m

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 N420LA page for operator, model, and routing details .

Mode-S A4FC9A frequently asked

What is Mode-S code A4FC9A?
A4FC9A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N420LA.
Where is Mode-S A4FC9A registered?
Mode-S code A4FC9A 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 A4FC9A broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A4FC9A, octal 51176232, decimal 10,812,570.
What flights does A4FC9A operate?
Mode-S A4FC9A has broadcast 20 distinct callsigns, including LCO3613, LCO3617, LCO1513, LTG8517, LCO1516.