sensors Mode-S transponder
A2A38E
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N26952 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC
- Hex
- A2A38E
- Octal
- 50521616
- Decimal
- 10,658,702
- Country
- US
- Tail
- N26952
- Type
- B789
- Flights observed
- 119
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address A2A38E 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 |
|---|---|---|---|
| UAL7 | United Airlines | 8 | 2026-05-11 |
| UAL62 | United Airlines | 8 | 2026-05-10 |
| UAL63 | United Airlines | 6 | 2026-05-11 |
| UAL842 | United Airlines | 4 | 2026-05-23 |
| UAL820 | United Airlines | 4 | 2026-05-15 |
| UAL6 | United Airlines | 4 | 2026-05-09 |
| UAL33 | United Airlines | 4 | 2026-05-27 |
| UAL27 | United Airlines | 4 | 2026-04-17 |
| UAL26 | United Airlines | 4 | 2026-04-17 |
| UAL182 | United Airlines | 4 | 2026-04-16 |
| UAL177 | United Airlines | 4 | 2026-04-18 |
| UAL839 | United Airlines | 3 | 2026-05-22 |
| UAL806 | United Airlines | 3 | 2026-05-19 |
| UAL32 | United Airlines | 3 | 2026-05-26 |
| UAL199 | United Airlines | 3 | 2026-05-13 |
| UAL198 | United Airlines | 3 | 2026-05-13 |
| UAL181 | United Airlines | 3 | 2026-04-16 |
| UAL153 | United Airlines | 3 | 2026-05-29 |
| UAL152 | United Airlines | 3 | 2026-05-28 |
| UAL142 | United Airlines | 3 | 2026-04-15 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | UAL923 | LAX → LHR | May 29, 22:50 UTC | May 30, 09:05 UTC | 10h 15m |
| 2026-05-29 | UAL153 | HKG → LAX | May 29, 04:50 UTC | May 29, 17:25 UTC | 12h 35m |
| 2026-05-29 | UAL153 | HKG → LAX | May 29, 02:15 UTC | May 29, 02:35 UTC | 20m |
| 2026-05-29 | UAL153 | HKG → LAX | May 29, 00:19 UTC | May 29, 02:34 UTC | 2h 15m |
| 2026-05-28 | UAL152 | LAX → HKG | May 28, 13:00 UTC | May 28, 13:10 UTC | 10m |
| 2026-05-27 | UAL152 | LAX → HKG | May 27, 20:20 UTC | May 28, 09:30 UTC | 13h 10m |
| 2026-05-27 | UAL152 | LAX → HKG | May 27, 20:08 UTC | May 28, 10:32 UTC | 14h 24m |
| 2026-05-27 | UAL33 | NRT → LAX | May 27, 08:25 UTC | May 27, 17:55 UTC | 9h 30m |
| 2026-05-26 | UAL32 | LAX → NRT | May 26, 18:30 UTC | May 27, 05:14 UTC | 10h 45m |
| 2026-05-25 | UAL935 | LHR → LAX | May 25, 12:35 UTC | May 25, 23:04 UTC | 10h 30m |
| 2026-05-24 | UAL923 | LAX → LHR | May 24, 23:00 UTC | May 25, 08:55 UTC | 9h 55m |
| 2026-05-24 | UAL33 | NRT → LAX | May 24, 08:20 UTC | May 24, 17:40 UTC | 9h 20m |
| 2026-05-24 | UAL33 | NRT → LAX | May 24, 08:05 UTC | May 24, 17:28 UTC | 9h 23m |
| 2026-05-23 | UAL32 | LAX → NRT | May 23, 18:10 UTC | May 24, 05:05 UTC | 10h 55m |
| 2026-05-23 | UAL842 | SYD → LAX | May 23, 00:10 UTC | May 23, 12:45 UTC | 12h 34m |
| 2026-05-22 | UAL839 | LAX → SYD | May 22, 06:55 UTC | May 22, 21:55 UTC | 14h 59m |
| 2026-05-21 | UAL1321 | MIA → EWR | May 21, 17:10 UTC | May 21, 22:10 UTC | 5h 0m |
| 2026-05-20 | UAL187 | JNB → EWR | May 20, 20:05 UTC | May 20, 20:20 UTC | 15m |
| 2026-05-20 | UAL187 | JNB → EWR | May 20, 20:19 UTC | May 21, 11:55 UTC | 15h 36m |
| 2026-05-20 | UAL188 | EWR → JNB | May 20, 02:30 UTC | May 20, 16:00 UTC | 13h 31m |
| 2026-05-19 | UAL713 | ORD → DEL | May 19, 18:25 UTC | May 19, 23:00 UTC | 4h 35m |
| 2026-05-19 | UAL806 | ICN → SFO | May 19, 02:56 UTC | May 19, 12:51 UTC | 9h 55m |
| 2026-05-19 | UAL806 | ICN → SFO | May 19, 02:45 UTC | May 19, 12:55 UTC | 10h 10m |
| 2026-05-18 | UAL805 | SFO → ICN | May 18, 07:20 UTC | May 18, 19:15 UTC | 11h 54m |
| 2026-05-17 | UAL870 | SYD → SFO | May 17, 01:15 UTC | May 17, 14:26 UTC | 13h 11m |
| 2026-05-17 | UAL870 | SYD → SFO | May 17, 01:10 UTC | May 17, 14:30 UTC | 13h 20m |
| 2026-05-16 | UAL839 | LAX → SYD | May 16, 08:41 UTC | May 16, 22:55 UTC | 14h 15m |
| 2026-05-15 | UAL821 | SFO → MEX | May 15, 14:00 UTC | May 16, 02:25 UTC | 12h 24m |
| 2026-05-15 | UAL821 | SFO → MEX | May 15, 09:00 UTC | May 15, 11:50 UTC | 2h 50m |
| 2026-05-15 | UAL820 | MEX → SFO | May 15, 02:10 UTC | May 15, 02:55 UTC | 45m |
| 2026-05-15 | UAL820 | MEX → SFO | May 15, 00:30 UTC | May 15, 00:45 UTC | 15m |
| 2026-05-15 | UAL820 | MEX → SFO | May 15, 00:01 UTC | May 15, 02:46 UTC | 2h 45m |
| 2026-05-14 | UAL820 | MEX → SFO | May 14, 06:35 UTC | May 14, 20:40 UTC | 14h 5m |
| 2026-05-13 | UAL199 | PVG → LAX | May 13, 13:35 UTC | May 13, 15:05 UTC | 1h 30m |
| 2026-05-13 | UAL199 | PVG → LAX | May 13, 06:10 UTC | May 13, 23:40 UTC | 17h 30m |
| 2026-05-13 | UAL199 | PVG → LAX | May 13, 01:35 UTC | May 13, 23:40 UTC | 22h 5m |
| 2026-05-13 | UAL198 | LAX → PVG | May 13, 00:05 UTC | May 13, 23:30 UTC | 23h 25m |
| 2026-05-12 | UAL198 | LAX → PVG | May 12, 20:20 UTC | May 13, 01:30 UTC | 5h 10m |
| 2026-05-12 | UAL198 | LAX → PVG | May 12, 20:08 UTC | May 13, 08:48 UTC | 12h 40m |
| 2026-05-12 | UAL33 | NRT → LAX | May 12, 08:10 UTC | May 12, 17:40 UTC | 9h 30m |
| 2026-05-11 | UAL7 | IAH → NRT | May 11, 15:35 UTC | May 12, 04:20 UTC | 12h 46m |
| 2026-05-11 | UAL63 | GRU → IAH | May 11, 01:15 UTC | May 11, 10:40 UTC | 9h 25m |
| 2026-05-10 | UAL62 | IAH → GRU | May 10, 00:00 UTC | May 10, 09:15 UTC | 9h 15m |
| 2026-05-10 | UAL62 | IAH → GRU | May 10, 00:03 UTC | May 10, 09:07 UTC | 9h 4m |
| 2026-05-09 | UAL6 | NRT → IAH | May 9, 08:35 UTC | May 9, 19:40 UTC | 11h 5m |
| 2026-05-08 | UAL32 | LAX → NRT | May 8, 17:40 UTC | May 9, 04:50 UTC | 11h 10m |
| 2026-05-08 | UAL842 | SYD → LAX | May 8, 00:14 UTC | May 8, 13:25 UTC | 13h 10m |
| 2026-05-07 | UAL863 | SFO → SYD | May 7, 06:50 UTC | May 7, 21:20 UTC | 14h 30m |
| 2026-05-06 | UAL892 | ICN → SFO | May 6, 08:01 UTC | May 6, 18:20 UTC | 10h 19m |
| 2026-05-05 | UAL893 | SFO → ICN | May 5, 17:50 UTC | May 6, 05:48 UTC | 11h 58m |
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 N26952 page for operator, model, and routing details .