sensors Mode-S transponder
AA5F41
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N768AA · BOEING 777-200 · operated by AMERICAN AIRLINES INC
- Hex
- AA5F41
- Octal
- 52457501
- Decimal
- 11,165,505
- Country
- US
- Tail
- N768AA
- Type
- B772
- Flights observed
- 115
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address AA5F41 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 |
|---|---|---|---|
| AAL10 | American Airlines | 8 | 2026-04-18 |
| AAL306 | American Airlines | 7 | 2026-04-18 |
| AAL109 | American Airlines | 7 | 2026-05-30 |
| AAL749 | American Airlines | 6 | 2026-05-27 |
| AAL43 | American Airlines | 6 | 2026-04-20 |
| AAL108 | American Airlines | 6 | 2026-05-30 |
| AAL194 | American Airlines | 5 | 2026-05-29 |
| AAL733 | American Airlines | 4 | 2026-05-08 |
| AAL732 | American Airlines | 4 | 2026-05-28 |
| AAL274 | American Airlines | 4 | 2026-04-18 |
| AAL199 | American Airlines | 4 | 2026-04-17 |
| AAL904 | American Airlines | 3 | 2026-04-30 |
| AAL720 | American Airlines | 3 | 2026-05-13 |
| AAL69 | American Airlines | 3 | 2026-04-26 |
| AAL198 | American Airlines | 3 | 2026-04-17 |
| AAL195 | American Airlines | 3 | 2026-05-28 |
| AAL173 | American Airlines | 3 | 2026-05-07 |
| AAL1 | American Airlines | 3 | 2026-04-18 |
| AAL94 | American Airlines | 2 | 2026-04-20 |
| AAL931 | American Airlines | 2 | 2026-04-27 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | AAL109 | LHR → BOS | May 30, 09:55 UTC | May 30, 10:15 UTC | 20m |
| 2026-05-30 | AAL109 | LHR → BOS | May 30, 09:55 UTC | May 30, 16:28 UTC | 6h 33m |
| 2026-05-30 | AAL108 | BOS → LHR | May 30, 00:53 UTC | May 30, 06:56 UTC | 6h 3m |
| 2026-05-30 | AAL108 | BOS → LHR | May 30, 00:55 UTC | May 30, 07:10 UTC | 6h 15m |
| 2026-05-29 | AAL109 | LHR → BOS | May 29, 12:35 UTC | May 29, 19:00 UTC | 6h 25m |
| 2026-05-29 | AAL194 | PHX → LHR | May 29, 00:20 UTC | May 29, 10:25 UTC | 10h 5m |
| 2026-05-29 | AAL194 | PHX → LHR | May 29, 00:20 UTC | May 29, 10:02 UTC | 9h 42m |
| 2026-05-28 | AAL195 | LHR → PHX | May 28, 10:55 UTC | May 28, 21:00 UTC | 10h 5m |
| 2026-05-28 | AAL732 | CLT → LHR | May 28, 01:10 UTC | May 28, 08:30 UTC | 7h 20m |
| 2026-05-28 | AAL732 | CLT → LHR | May 28, 01:06 UTC | May 28, 08:25 UTC | 7h 19m |
| 2026-05-27 | AAL749 | MAD → CLT | May 27, 12:45 UTC | May 27, 21:05 UTC | 8h 20m |
| 2026-05-27 | AAL36 | DFW → MAD | May 27, 01:29 UTC | May 27, 10:35 UTC | 9h 5m |
| 2026-05-26 | AAL60P | IAH → DFW | May 26, 21:55 UTC | May 26, 22:44 UTC | 50m |
| 2026-05-25 | AAL60 | NRT → DFW | May 25, 10:10 UTC | May 25, 22:30 UTC | 12h 19m |
| 2026-05-24 | AAL61 | DFW → NRT | May 24, 17:50 UTC | May 25, 06:25 UTC | 12h 35m |
| 2026-05-14 | AAL239 | FCO → DFW | May 14, 11:45 UTC | May 14, 22:40 UTC | 10h 55m |
| 2026-05-13 | AAL720 | CLT → FCO | May 13, 22:45 UTC | May 14, 07:05 UTC | 8h 20m |
| 2026-05-13 | AAL725 | DUB → CLT | May 13, 11:05 UTC | May 13, 11:50 UTC | 45m |
| 2026-05-13 | AAL725 | DUB → CLT | May 13, 11:05 UTC | May 13, 18:44 UTC | 7h 39m |
| 2026-05-13 | AAL724 | CLT → DUB | May 13, 01:25 UTC | May 13, 08:15 UTC | 6h 50m |
| 2026-05-12 | AAL749 | MAD → CLT | May 12, 12:40 UTC | May 12, 20:45 UTC | 8h 5m |
| 2026-05-12 | AAL749 | MAD → CLT | May 12, 12:40 UTC | May 12, 20:49 UTC | 8h 9m |
| 2026-05-12 | AAL36 | DFW → MAD | May 12, 06:45 UTC | May 12, 07:55 UTC | 1h 10m |
| 2026-05-11 | AAL221 | AMS → DFW | May 11, 10:30 UTC | May 11, 20:10 UTC | 9h 41m |
| 2026-05-11 | AAL221 | AMS → DFW | May 11, 10:28 UTC | May 11, 20:07 UTC | 9h 39m |
| 2026-05-10 | AAL220 | DFW → AMS | May 10, 23:09 UTC | May 11, 08:05 UTC | 8h 55m |
| 2026-05-09 | AAL239 | FCO → DFW | May 9, 11:35 UTC | May 9, 22:55 UTC | 11h 20m |
| 2026-05-08 | AAL720 | CLT → FCO | May 8, 22:55 UTC | May 9, 06:15 UTC | 7h 20m |
| 2026-05-08 | AAL720 | CLT → FCO | May 8, 22:51 UTC | May 9, 07:42 UTC | 8h 51m |
| 2026-05-08 | AAL733 | LHR → CLT | May 8, 11:25 UTC | May 8, 12:14 UTC | 50m |
| 2026-05-08 | AAL733 | LHR → CLT | May 8, 11:24 UTC | May 8, 19:43 UTC | 8h 19m |
| 2026-05-08 | AAL174 | RDU → LHR | May 8, 00:49 UTC | May 8, 07:44 UTC | 6h 55m |
| 2026-05-07 | AAL173 | LHR → RDU | May 7, 12:25 UTC | May 7, 20:50 UTC | 8h 25m |
| 2026-05-07 | AAL173 | LHR → RDU | May 7, 12:24 UTC | May 7, 20:45 UTC | 8h 21m |
| 2026-05-06 | AAL194 | PHX → LHR | May 6, 23:50 UTC | May 7, 09:20 UTC | 9h 30m |
| 2026-05-06 | AAL195 | LHR → PHX | May 6, 09:25 UTC | May 6, 19:25 UTC | 9h 59m |
| 2026-05-06 | AAL108 | BOS → LHR | May 6, 00:15 UTC | May 6, 01:25 UTC | 1h 10m |
| 2026-05-06 | AAL108 | BOS → LHR | May 6, 00:15 UTC | May 6, 06:17 UTC | 6h 2m |
| 2026-05-05 | AAL109 | LHR → BOS | May 5, 10:15 UTC | May 5, 16:45 UTC | 6h 30m |
| 2026-05-05 | AAL109 | LHR → BOS | May 5, 10:12 UTC | May 5, 16:41 UTC | 6h 29m |
| 2026-05-05 | AAL732 | CLT → LHR | May 5, 00:30 UTC | May 5, 07:45 UTC | 7h 15m |
| 2026-05-04 | AAL733 | LHR → CLT | May 4, 11:20 UTC | May 4, 19:10 UTC | 7h 51m |
| 2026-05-04 | AAL733 | LHR → CLT | May 4, 11:15 UTC | May 4, 19:10 UTC | 7h 55m |
| 2026-05-04 | AAL174 | RDU → LHR | May 4, 00:55 UTC | May 4, 08:25 UTC | 7h 30m |
| 2026-05-03 | AAL173 | LHR → RDU | May 3, 12:25 UTC | May 3, 20:05 UTC | 7h 40m |
| 2026-05-02 | AAL194 | PHX → LHR | May 2, 23:35 UTC | May 3, 09:25 UTC | 9h 49m |
| 2026-05-02 | AAL194 | PHX → LHR | May 2, 23:32 UTC | May 3, 09:19 UTC | 9h 47m |
| 2026-05-02 | AAL195 | LHR → PHX | May 2, 09:25 UTC | May 2, 19:35 UTC | 10h 10m |
| 2026-05-02 | AAL108 | BOS → LHR | May 2, 00:20 UTC | May 2, 06:40 UTC | 6h 20m |
| 2026-05-02 | AAL108 | BOS → LHR | May 2, 00:17 UTC | May 2, 06:24 UTC | 6h 7m |
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 N768AA page for operator, model, and routing details .