sensors Mode-S transponder
AA92F9
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N78002 · BOEING 777-200 · operated by UNITED AIRLINES INC
- Hex
- AA92F9
- Octal
- 52511371
- Decimal
- 11,178,745
- Country
- US
- Tail
- N78002
- Type
- B772
- Flights observed
- 104
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 59m ago
Last known position
Country allocation
The ICAO 24-bit address AA92F9 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 |
|---|---|---|---|
| UAL804 | United Airlines | 8 | 2026-05-24 |
| UAL195 | United Airlines | 7 | 2026-05-27 |
| UAL131 | United Airlines | 7 | 2026-04-24 |
| UAL130 | United Airlines | 6 | 2026-04-16 |
| UAL507 | United Airlines | 5 | 2026-05-21 |
| UAL916 | United Airlines | 4 | 2026-05-23 |
| UAL879 | United Airlines | 4 | 2026-05-26 |
| UAL819 | United Airlines | 4 | 2026-05-15 |
| UAL803 | United Airlines | 4 | 2026-04-16 |
| UAL918 | United Airlines | 3 | 2026-05-25 |
| UAL875 | United Airlines | 3 | 2026-05-23 |
| UAL506 | United Airlines | 3 | 2026-05-21 |
| UAL102 | United Airlines | 3 | 2026-05-26 |
| UAL984 | United Airlines | 2 | 2026-05-11 |
| UAL97 | United Airlines | 2 | 2026-05-08 |
| UAL943 | United Airlines | 2 | 2026-05-25 |
| UAL917 | United Airlines | 2 | 2026-05-22 |
| UAL853 | United Airlines | 2 | 2026-05-28 |
| UAL852 | United Airlines | 2 | 2026-05-29 |
| UAL818 | United Airlines | 2 | 2026-04-30 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | UAL968 | SFO → AMS | May 29, 22:40 UTC | May 30, 00:15 UTC | 1h 35m |
| 2026-05-29 | UAL852 | TPE → SAN | May 29, 06:45 UTC | May 29, 07:00 UTC | 15m |
| 2026-05-29 | UAL852 | TPE → SAN | May 29, 06:51 UTC | May 29, 17:58 UTC | 11h 7m |
| 2026-05-28 | UAL853 | SFO → TPE | May 28, 07:33 UTC | May 28, 20:21 UTC | 12h 48m |
| 2026-05-28 | UAL853 | SFO → TPE | May 28, 07:45 UTC | May 28, 08:10 UTC | 25m |
| 2026-05-27 | UAL195 | MUC → SFO | May 27, 10:05 UTC | May 27, 21:25 UTC | 11h 20m |
| 2026-05-27 | UAL195 | MUC → SFO | May 27, 10:02 UTC | May 27, 21:15 UTC | 11h 13m |
| 2026-05-26 | UAL102 | IAH → MUC | May 26, 22:15 UTC | May 27, 08:05 UTC | 9h 51m |
| 2026-05-26 | UAL879 | LHR → IAH | May 26, 09:35 UTC | May 26, 19:15 UTC | 9h 40m |
| 2026-05-26 | UAL879 | LHR → IAH | May 26, 09:25 UTC | May 26, 19:14 UTC | 9h 49m |
| 2026-05-25 | UAL918 | IAD → LHR | May 25, 23:19 UTC | May 26, 05:59 UTC | 6h 40m |
| 2026-05-25 | UAL943 | LIS → IAD | May 25, 13:26 UTC | May 25, 20:42 UTC | 7h 16m |
| 2026-05-25 | UAL943 | LIS → IAD | May 25, 13:20 UTC | May 25, 20:45 UTC | 7h 24m |
| 2026-05-25 | UAL942 | IAD → LIS | May 25, 04:10 UTC | May 25, 10:45 UTC | 6h 35m |
| 2026-05-24 | UAL804 | HND → IAD | May 24, 08:05 UTC | May 24, 20:05 UTC | 12h 0m |
| 2026-05-23 | UAL875 | SFO → HND | May 23, 18:50 UTC | May 24, 05:15 UTC | 10h 25m |
| 2026-05-23 | UAL916 | AKL → SFO | May 23, 02:05 UTC | May 23, 13:00 UTC | 10h 54m |
| 2026-05-22 | UAL917 | SFO → AKL | May 22, 06:40 UTC | May 22, 19:22 UTC | 12h 42m |
| 2026-05-22 | UAL917 | SFO → AKL | May 22, 06:45 UTC | May 22, 07:10 UTC | 25m |
| 2026-05-21 | UAL506 | MSN → DEN | May 21, 14:00 UTC | May 22, 01:45 UTC | 11h 45m |
| 2026-05-21 | UAL507 | DEN → LGA | May 21, 00:05 UTC | May 21, 11:40 UTC | 11h 35m |
| 2026-05-20 | UAL195 | MUC → SFO | May 20, 10:20 UTC | May 20, 15:50 UTC | 5h 30m |
| 2026-05-20 | UAL195 | MUC → SFO | May 20, 10:12 UTC | May 20, 21:06 UTC | 10h 54m |
| 2026-05-20 | UAL195 | MUC → SFO | May 20, 10:12 UTC | May 20, 20:59 UTC | 10h 47m |
| 2026-05-19 | UAL102 | IAH → MUC | May 19, 22:05 UTC | May 20, 07:50 UTC | 9h 46m |
| 2026-05-19 | UAL818D | EZE → IAH | May 19, 01:40 UTC | May 19, 11:45 UTC | 10h 5m |
| 2026-05-15 | UAL819 | IAH → EZE | May 15, 03:45 UTC | May 15, 04:10 UTC | 25m |
| 2026-05-15 | UAL819 | IAH → EZE | May 15, 02:05 UTC | May 15, 02:25 UTC | 20m |
| 2026-05-15 | UAL819 | IAH → EZE | May 15, 02:11 UTC | May 15, 11:05 UTC | 8h 54m |
| 2026-05-14 | UAL160 | MUC → IAH | May 14, 10:50 UTC | May 14, 12:50 UTC | 2h 0m |
| 2026-05-14 | UAL160 | MUC → IAH | May 14, 10:39 UTC | May 14, 21:21 UTC | 10h 42m |
| 2026-05-13 | UAL194 | SFO → MUC | May 13, 21:25 UTC | May 14, 07:45 UTC | 10h 20m |
| 2026-05-12 | UAL506 | MSN → DEN | May 12, 13:51 UTC | May 13, 02:15 UTC | 12h 25m |
| 2026-05-12 | UAL507 | DEN → LGA | May 12, 02:45 UTC | May 12, 11:10 UTC | 8h 25m |
| 2026-05-12 | UAL507 | DEN → LGA | May 12, 00:04 UTC | May 12, 11:06 UTC | 11h 2m |
| 2026-05-11 | UAL984 | CDG → SFO | May 11, 09:15 UTC | May 11, 20:10 UTC | 10h 56m |
| 2026-05-11 | UAL984 | CDG → SFO | May 11, 09:27 UTC | May 11, 20:02 UTC | 10h 35m |
| 2026-05-11 | UAL57 | EWR → CDG | May 11, 00:48 UTC | May 11, 06:54 UTC | 6h 6m |
| 2026-05-11 | UAL57 | EWR → CDG | May 11, 00:30 UTC | May 11, 01:50 UTC | 1h 20m |
| 2026-05-08 | UAL435 | KOA → SFO | May 8, 16:20 UTC | May 8, 20:55 UTC | 4h 35m |
| 2026-05-08 | UAL97 | BNE → SFO | May 8, 00:54 UTC | May 8, 13:40 UTC | 12h 45m |
| 2026-05-08 | UAL97 | BNE → SFO | May 8, 00:43 UTC | May 8, 13:35 UTC | 12h 52m |
| 2026-05-07 | UAL96 | SFO → BNE | May 7, 07:05 UTC | May 7, 20:40 UTC | 13h 35m |
| 2026-05-06 | UAL673 | SFO → BOS | May 6, 14:25 UTC | May 7, 01:50 UTC | 11h 24m |
| 2026-05-06 | UAL673 | SFO → BOS | May 6, 14:36 UTC | May 7, 01:49 UTC | 11h 13m |
| 2026-05-06 | UAL672 | EWR → ATL | May 6, 01:01 UTC | May 6, 12:15 UTC | 11h 15m |
| 2026-05-05 | UAL59 | FRA → SFO | May 5, 11:25 UTC | May 5, 22:05 UTC | 10h 40m |
| 2026-05-04 | UAL58 | SFO → FRA | May 4, 21:15 UTC | May 5, 07:30 UTC | 10h 15m |
| 2026-05-04 | UAL34 | KIX → SFO | May 4, 08:45 UTC | May 4, 17:50 UTC | 9h 5m |
| 2026-05-03 | UAL35 | SFO → KIX | May 3, 18:20 UTC | May 4, 04:55 UTC | 10h 35m |
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 N78002 page for operator, model, and routing details .