sensors Mode-S transponder
A0EEEA
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N15969 · BOEING 787-9 Dreamliner · operated by UNITED AIRLINES INC
- Hex
- A0EEEA
- Octal
- 50167352
- Decimal
- 10,546,922
- Country
- US
- Tail
- N15969
- Type
- B789
- Flights observed
- 111
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address A0EEEA 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 |
|---|---|---|---|
| UAL153 | United Airlines | 7 | 2026-05-03 |
| UAL152 | United Airlines | 7 | 2026-05-02 |
| UAL62 | United Airlines | 6 | 2026-05-06 |
| UAL6 | United Airlines | 6 | 2026-05-05 |
| UAL805 | United Airlines | 5 | 2026-05-29 |
| UAL99 | United Airlines | 4 | 2026-05-01 |
| UAL79 | United Airlines | 4 | 2026-04-17 |
| UAL29 | United Airlines | 4 | 2026-05-27 |
| UAL187 | United Airlines | 4 | 2026-04-16 |
| UAL98 | United Airlines | 3 | 2026-04-30 |
| UAL842 | - | 3 | 2026-04-14 |
| UAL839 | - | 3 | 2026-04-13 |
| UAL82 | United Airlines | 3 | 2026-05-11 |
| UAL806 | United Airlines | 3 | 2026-05-30 |
| UAL63 | United Airlines | 3 | 2026-05-07 |
| UAL2222 | United Airlines | 3 | 2026-05-15 |
| UAL2096 | United Airlines | 3 | 2026-04-14 |
| UAL198 | United Airlines | 3 | 2026-04-28 |
| UAL1227 | United Airlines | 3 | 2026-05-16 |
| UAL83 | United Airlines | 2 | 2026-05-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | UAL806 | ICN → SFO | May 30, 02:50 UTC | May 30, 04:15 UTC | 1h 25m |
| 2026-05-29 | UAL805 | SFO → ICN | May 29, 07:35 UTC | May 29, 19:50 UTC | 12h 15m |
| 2026-05-28 | UAL28 | SIN → SFO | May 28, 14:55 UTC | May 29, 04:35 UTC | 13h 40m |
| 2026-05-27 | UAL29 | SFO → SIN | May 27, 18:55 UTC | May 27, 19:15 UTC | 20m |
| 2026-05-27 | UAL29 | SFO → SIN | May 27, 18:45 UTC | May 28, 10:47 UTC | 16h 2m |
| 2026-05-27 | UAL114 | PPT → SFO | May 27, 07:10 UTC | May 27, 15:00 UTC | 7h 50m |
| 2026-05-26 | UAL115 | SFO → PPT | May 26, 20:50 UTC | May 27, 04:45 UTC | 7h 55m |
| 2026-05-26 | UAL806 | ICN → SFO | May 26, 02:55 UTC | May 26, 13:10 UTC | 10h 15m |
| 2026-05-25 | UAL805 | SFO → ICN | May 25, 07:26 UTC | May 25, 19:11 UTC | 11h 45m |
| 2026-05-25 | UAL805 | SFO → ICN | May 25, 07:30 UTC | May 25, 19:15 UTC | 11h 45m |
| 2026-05-24 | UAL28 | SIN → SFO | May 24, 15:35 UTC | May 25, 03:50 UTC | 12h 15m |
| 2026-05-23 | UAL29 | SFO → SIN | May 23, 18:35 UTC | May 24, 10:44 UTC | 16h 9m |
| 2026-05-23 | UAL29 | SFO → SIN | May 23, 19:00 UTC | May 24, 08:25 UTC | 13h 25m |
| 2026-05-23 | UAL61 | BRU → EWR | May 23, 01:20 UTC | May 23, 14:45 UTC | 13h 24m |
| 2026-05-22 | UAL60 | SFO → MEL | May 22, 07:45 UTC | May 22, 22:35 UTC | 14h 50m |
| 2026-05-21 | UAL1757 | PIT → DEN | May 21, 22:35 UTC | May 22, 03:45 UTC | 5h 10m |
| 2026-05-20 | UAL2023 | BOS → ORD | May 20, 08:25 UTC | May 20, 09:10 UTC | 45m |
| 2026-05-19 | UAL2023 | BOS → ORD | May 19, 18:10 UTC | May 19, 18:25 UTC | 15m |
| 2026-05-18 | UAL1011 | MCI → SFO | May 18, 23:16 UTC | May 19, 13:02 UTC | 13h 46m |
| 2026-05-18 | UAL1011 | MCI → SFO | May 18, 23:20 UTC | May 19, 13:10 UTC | 13h 50m |
| 2026-05-18 | UAL1849 | MCO → EWR | May 18, 15:35 UTC | May 18, 20:15 UTC | 4h 39m |
| 2026-05-18 | UAL806 | ICN → SFO | May 18, 02:45 UTC | May 18, 12:50 UTC | 10h 5m |
| 2026-05-17 | UAL805 | SFO → ICN | May 17, 07:10 UTC | May 17, 18:30 UTC | 11h 20m |
| 2026-05-17 | UAL805 | SFO → ICN | May 17, 07:11 UTC | May 17, 18:29 UTC | 11h 18m |
| 2026-05-16 | UAL1227 | PHX → IAD | May 16, 18:15 UTC | May 16, 23:55 UTC | 5h 40m |
| 2026-05-16 | UAL123 | ANC → ORD | May 16, 07:11 UTC | May 16, 14:05 UTC | 6h 55m |
| 2026-05-15 | UAL122 | IAD → LHR | May 15, 14:05 UTC | May 15, 20:00 UTC | 5h 54m |
| 2026-05-15 | UAL2222 | IAD → CPT | May 15, 08:15 UTC | May 15, 08:55 UTC | 40m |
| 2026-05-14 | UAL2222 | IAD → CPT | May 14, 18:10 UTC | May 14, 18:25 UTC | 15m |
| 2026-05-14 | UAL2222 | IAD → CPT | May 14, 18:12 UTC | May 15, 09:00 UTC | 14h 48m |
| 2026-05-14 | UAL1122 | EWR → CPT | May 14, 01:15 UTC | May 14, 15:01 UTC | 13h 45m |
| 2026-05-11 | UAL83 | DEL → EWR | May 11, 18:35 UTC | May 12, 10:45 UTC | 16h 10m |
| 2026-05-11 | UAL82 | EWR → DEL | May 11, 01:21 UTC | May 11, 14:56 UTC | 13h 35m |
| 2026-05-11 | UAL82 | EWR → DEL | May 11, 01:15 UTC | May 11, 14:30 UTC | 13h 15m |
| 2026-05-09 | UAL83 | DEL → EWR | May 9, 19:00 UTC | May 10, 11:00 UTC | 16h 0m |
| 2026-05-09 | UAL82 | EWR → DEL | May 9, 01:20 UTC | May 9, 15:25 UTC | 14h 5m |
| 2026-05-08 | UAL78 | NRT → EWR | May 8, 08:51 UTC | May 8, 20:40 UTC | 11h 49m |
| 2026-05-08 | UAL78 | NRT → EWR | May 8, 08:34 UTC | May 8, 09:09 UTC | 35m |
| 2026-05-07 | UAL7 | IAH → NRT | May 7, 16:00 UTC | May 8, 05:20 UTC | 13h 19m |
| 2026-05-07 | UAL63 | GRU → IAH | May 7, 01:15 UTC | May 7, 10:10 UTC | 8h 55m |
| 2026-05-06 | UAL62 | IAH → GRU | May 6, 00:01 UTC | May 6, 09:35 UTC | 9h 35m |
| 2026-05-05 | UAL6 | NRT → IAH | May 5, 08:26 UTC | May 5, 19:19 UTC | 10h 53m |
| 2026-05-05 | UAL6 | NRT → IAH | May 5, 08:05 UTC | May 5, 19:20 UTC | 11h 15m |
| 2026-05-04 | UAL32 | LAX → NRT | May 4, 18:00 UTC | May 5, 05:05 UTC | 11h 6m |
| 2026-05-03 | UAL153 | HKG → LAX | May 3, 05:55 UTC | May 3, 17:40 UTC | 11h 45m |
| 2026-05-03 | UAL153 | HKG → LAX | May 3, 05:05 UTC | May 3, 05:20 UTC | 15m |
| 2026-05-03 | UAL153 | HKG → LAX | May 3, 02:10 UTC | May 3, 02:30 UTC | 20m |
| 2026-05-03 | UAL153 | HKG → LAX | May 3, 00:19 UTC | May 3, 02:23 UTC | 2h 4m |
| 2026-05-02 | UAL152 | LAX → HKG | May 2, 13:10 UTC | May 2, 13:25 UTC | 15m |
| 2026-05-01 | UAL152 | LAX → HKG | May 1, 19:20 UTC | May 2, 10:30 UTC | 15h 10m |
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 N15969 page for operator, model, and routing details .