sensors Mode-S transponder
A2A3B6
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N26967 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC
- Hex
- A2A3B6
- Octal
- 50521666
- Decimal
- 10,658,742
- Country
- US
- Tail
- N26967
- Type
- B789
- Flights observed
- 230
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- Jul 26, 18:30 UTC
Last known position
Country allocation
The ICAO 24-bit address A2A3B6 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 |
|---|---|---|---|
| UAL821 | United Airlines | 10 | 2026-05-23 |
| UAL820 | United Airlines | 8 | 2026-05-23 |
| UAL187 | United Airlines | 8 | 2026-07-18 |
| UAL115 | - | 8 | 2026-07-04 |
| UAL114 | - | 8 | 2026-07-05 |
| UAL839 | United Airlines | 7 | 2026-05-24 |
| UAL60 | - | 7 | 2026-07-16 |
| UAL29 | - | 7 | 2026-07-14 |
| UAL806 | - | 6 | 2026-07-03 |
| UAL61 | - | 6 | 2026-07-17 |
| UAL2096 | United Airlines | 6 | 2026-05-25 |
| UAL188 | - | 6 | 2026-07-18 |
| UAL923 | United Airlines | 5 | 2026-05-20 |
| UAL893 | - | 5 | 2026-07-10 |
| UAL892 | - | 5 | 2026-07-11 |
| UAL842 | United Airlines | 5 | 2026-05-25 |
| UAL83 | United Airlines | 5 | 2026-05-26 |
| UAL28 | - | 5 | 2026-07-15 |
| UAL1849 | United Airlines | 5 | 2026-07-25 |
| UAL1321 | United Airlines | 5 | 2026-05-09 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | UAL2023 | BOS → ORD | Jul 26, 18:21 UTC | Jul 27, 08:55 UTC | 14h 34m |
| 2026-07-26 | UAL2023 | BOS → ORD | Jul 26, 18:05 UTC | Jul 26, 18:30 UTC | 25m |
| 2026-07-26 | UAL1011 | MCI → SFO | Jul 26, 13:00 UTC | Jul 26, 13:15 UTC | 15m |
| 2026-07-25 | UAL1011 | MCI → SFO | Jul 25, 22:51 UTC | Jul 26, 13:07 UTC | 14h 16m |
| 2026-07-25 | UAL1011 | MCI → SFO | Jul 25, 22:50 UTC | Jul 25, 23:35 UTC | 45m |
| 2026-07-25 | UAL1849 | MCO → EWR | Jul 25, 15:50 UTC | Jul 25, 20:20 UTC | 4h 30m |
| 2026-07-25 | UAL1849 | MCO → EWR | Jul 25, 15:39 UTC | Jul 25, 20:15 UTC | 4h 36m |
| 2026-07-23 | UAL1227 | PHX → IAD | Jul 23, 18:00 UTC | Jul 23, 23:25 UTC | 5h 25m |
| 2026-07-23 | UAL123 | ANC → ORD | Jul 23, 07:00 UTC | Jul 23, 14:00 UTC | 7h 0m |
| 2026-07-22 | UAL122 | IAD → LHR | Jul 22, 14:15 UTC | Jul 22, 20:30 UTC | 6h 15m |
| 2026-07-21 | UAL1855 | ORD → BOS | Jul 21, 22:20 UTC | Jul 22, 02:40 UTC | 4h 20m |
| 2026-07-21 | UAL2692 | - | Jul 21, 15:00 UTC | Jul 21, 19:55 UTC | 4h 55m |
| 2026-07-18 | UAL187 | JNB → EWR | Jul 18, 20:05 UTC | Jul 19, 11:15 UTC | 15h 10m |
| 2026-07-18 | UAL187 | JNB → EWR | Jul 18, 20:19 UTC | Jul 19, 11:12 UTC | 14h 53m |
| 2026-07-18 | UAL188 | - | Jul 18, 02:14 UTC | Jul 18, 16:25 UTC | 14h 11m |
| 2026-07-17 | UAL713 | SFO → EWR | Jul 17, 18:40 UTC | Jul 17, 23:45 UTC | 5h 5m |
| 2026-07-17 | UAL61 | - | Jul 17, 01:15 UTC | Jul 17, 15:10 UTC | 13h 55m |
| 2026-07-16 | UAL60 | SFO → MEL | Jul 16, 07:45 UTC | Jul 16, 22:45 UTC | 15h 0m |
| 2026-07-15 | UAL28 | - | Jul 15, 15:55 UTC | Jul 16, 04:55 UTC | 13h 0m |
| 2026-07-15 | UAL28 | SIN → SFO | Jul 15, 13:31 UTC | Jul 16, 04:48 UTC | 15h 17m |
| 2026-07-14 | UAL29 | - | Jul 14, 19:00 UTC | Jul 15, 07:30 UTC | 12h 29m |
| 2026-07-14 | UAL29 | SFO → SIN | Jul 14, 18:35 UTC | Jul 15, 10:28 UTC | 15h 53m |
| 2026-07-14 | UAL61 | MEL → SFO | Jul 14, 01:36 UTC | Jul 14, 15:23 UTC | 13h 47m |
| 2026-07-14 | UAL61 | - | Jul 14, 01:50 UTC | Jul 14, 02:55 UTC | 1h 5m |
| 2026-07-13 | UAL60 | SFO → MEL | Jul 13, 08:16 UTC | Jul 13, 23:14 UTC | 14h 58m |
| 2026-07-13 | UAL60 | - | Jul 13, 08:10 UTC | Jul 13, 21:30 UTC | 13h 20m |
| 2026-07-12 | UAL969 | - | Jul 12, 13:20 UTC | Jul 12, 23:50 UTC | 10h 30m |
| 2026-07-11 | UAL968 | SFO → AMS | Jul 11, 22:15 UTC | Jul 12, 07:50 UTC | 9h 35m |
| 2026-07-11 | UAL892 | ICN → SFO | Jul 11, 09:05 UTC | Jul 11, 19:20 UTC | 10h 15m |
| 2026-07-10 | UAL893 | SFO → ICN | Jul 10, 20:00 UTC | Jul 11, 07:00 UTC | 11h 0m |
| 2026-07-10 | UAL870 | SYD → SFO | Jul 10, 00:50 UTC | Jul 10, 13:35 UTC | 12h 45m |
| 2026-07-09 | UAL863 | SFO → SYD | Jul 9, 06:45 UTC | Jul 9, 21:35 UTC | 14h 50m |
| 2026-07-09 | UAL863 | - | Jul 9, 07:00 UTC | Jul 9, 07:20 UTC | 20m |
| 2026-07-08 | UAL1593 | - | Jul 8, 13:50 UTC | Jul 8, 19:05 UTC | 5h 15m |
| 2026-07-08 | UAL1141 | SFO → EWR | Jul 8, 06:15 UTC | Jul 8, 10:50 UTC | 4h 35m |
| 2026-07-06 | UAL28 | - | Jul 6, 15:40 UTC | Jul 7, 03:25 UTC | 11h 45m |
| 2026-07-06 | UAL29 | - | Jul 6, 10:20 UTC | Jul 6, 10:30 UTC | 10m |
| 2026-07-05 | UAL29 | SFO → SIN | Jul 5, 18:41 UTC | Jul 6, 10:35 UTC | 15h 54m |
| 2026-07-05 | UAL29 | - | Jul 5, 19:00 UTC | Jul 6, 08:50 UTC | 13h 50m |
| 2026-07-05 | UAL114 | - | Jul 5, 07:20 UTC | Jul 5, 14:50 UTC | 7h 30m |
| 2026-07-04 | UAL115 | SFO → PPT | Jul 4, 21:00 UTC | Jul 5, 04:50 UTC | 7h 50m |
| 2026-07-04 | UAL1757 | - | Jul 4, 03:00 UTC | Jul 4, 07:50 UTC | 4h 50m |
| 2026-07-03 | UAL1849 | MCO → EWR | Jul 3, 19:00 UTC | Jul 3, 23:35 UTC | 4h 35m |
| 2026-07-03 | UAL806 | ICN → SFO | Jul 3, 02:56 UTC | Jul 3, 12:44 UTC | 9h 48m |
| 2026-07-03 | UAL806 | ICN → SFO | Jul 3, 02:45 UTC | Jul 3, 12:50 UTC | 10h 5m |
| 2026-07-02 | UAL805 | SFO → ICN | Jul 2, 07:49 UTC | Jul 2, 19:38 UTC | 11h 49m |
| 2026-07-02 | UAL805 | SFO → ICN | Jul 2, 07:55 UTC | Jul 2, 19:45 UTC | 11h 50m |
| 2026-07-01 | UAL114 | - | Jul 1, 08:05 UTC | Jul 1, 15:35 UTC | 7h 30m |
| 2026-07-01 | UAL114 | PPT → SFO | Jul 1, 08:10 UTC | Jul 1, 15:26 UTC | 7h 16m |
| 2026-06-30 | UAL115 | SFO → PPT | Jun 30, 21:25 UTC | Jul 1, 05:20 UTC | 7h 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 N26967 page for operator, model, and routing details .