sensors Mode-S transponder
AA92FC
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N78005 · BOEING 777-200 · operated by UNITED AIRLINES INC
- Hex
- AA92FC
- Octal
- 52511374
- Decimal
- 11,178,748
- Country
- US
- Tail
- N78005
- Type
- B772
- Flights observed
- 96
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address AA92FC 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 |
|---|---|---|---|
| UAL919 | United Airlines | 7 | 2026-05-27 |
| UAL933 | United Airlines | 6 | 2026-04-22 |
| UAL56 | United Airlines | 6 | 2026-04-24 |
| UAL984 | United Airlines | 5 | 2026-05-03 |
| UAL969 | United Airlines | 5 | 2026-04-16 |
| UAL57 | United Airlines | 5 | 2026-05-02 |
| UAL968 | United Airlines | 4 | 2026-04-16 |
| UAL926 | United Airlines | 4 | 2026-04-17 |
| UAL924 | United Airlines | 4 | 2026-04-18 |
| UAL22 | United Airlines | 4 | 2026-05-05 |
| UAL915 | United Airlines | 3 | 2026-04-23 |
| UAL876 | United Airlines | 3 | 2026-05-23 |
| UAL96 | United Airlines | 2 | 2026-04-30 |
| UAL939 | United Airlines | 2 | 2026-04-29 |
| UAL918 | United Airlines | 2 | 2026-05-26 |
| UAL901 | United Airlines | 2 | 2026-04-27 |
| UAL838 | United Airlines | 2 | 2026-04-27 |
| UAL8241 | United Airlines | 2 | 2026-05-25 |
| UAL59 | United Airlines | 2 | 2026-05-24 |
| UAL435 | United Airlines | 2 | 2026-05-04 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | UAL149 | EWR → GRU | May 30, 01:11 UTC | May 30, 09:57 UTC | 8h 46m |
| 2026-05-30 | UAL149 | EWR → GRU | May 30, 01:15 UTC | May 30, 02:40 UTC | 1h 25m |
| 2026-05-29 | UAL130 | HND → EWR | May 29, 09:30 UTC | May 29, 22:00 UTC | 12h 30m |
| 2026-05-28 | UAL803 | IAD → HND | May 28, 17:15 UTC | May 29, 07:15 UTC | 14h 0m |
| 2026-05-27 | UAL919 | LHR → IAD | May 27, 11:45 UTC | May 27, 19:00 UTC | 7h 15m |
| 2026-05-26 | UAL918 | IAD → LHR | May 26, 22:59 UTC | May 27, 05:55 UTC | 6h 55m |
| 2026-05-26 | UAL804 | HND → IAD | May 26, 06:59 UTC | May 26, 19:30 UTC | 12h 30m |
| 2026-05-25 | UAL131 | EWR → HND | May 25, 14:55 UTC | May 26, 04:00 UTC | 13h 5m |
| 2026-05-25 | UAL8241 | LAX → ORD | May 25, 06:06 UTC | May 25, 10:30 UTC | 4h 24m |
| 2026-05-25 | UAL8241 | LAX → ORD | May 25, 06:00 UTC | May 25, 10:35 UTC | 4h 35m |
| 2026-05-24 | UAL59 | FRA → SFO | May 24, 11:10 UTC | May 24, 13:00 UTC | 1h 50m |
| 2026-05-24 | UAL59 | FRA → SFO | May 24, 11:19 UTC | May 24, 22:06 UTC | 10h 47m |
| 2026-05-23 | UAL58 | SFO → FRA | May 23, 21:20 UTC | May 24, 07:30 UTC | 10h 10m |
| 2026-05-23 | UAL876 | HND → SFO | May 23, 07:30 UTC | May 23, 16:11 UTC | 8h 41m |
| 2026-05-23 | UAL876 | HND → SFO | May 23, 07:25 UTC | May 23, 08:05 UTC | 40m |
| 2026-05-22 | UAL875 | SFO → HND | May 22, 18:40 UTC | May 23, 05:15 UTC | 10h 34m |
| 2026-05-08 | UAL3854 | BGR → EWR | May 8, 00:40 UTC | May 8, 06:09 UTC | 5h 30m |
| 2026-05-05 | UAL22 | DUB → EWR | May 5, 08:25 UTC | May 5, 15:01 UTC | 6h 35m |
| 2026-05-05 | UAL23 | EWR → DUB | May 5, 00:30 UTC | May 5, 06:15 UTC | 5h 45m |
| 2026-05-04 | UAL435 | KOA → SFO | May 4, 16:15 UTC | May 4, 20:45 UTC | 4h 31m |
| 2026-05-03 | UAL984 | CDG → SFO | May 3, 07:30 UTC | May 3, 18:14 UTC | 10h 45m |
| 2026-05-02 | UAL57 | EWR → CDG | May 2, 22:08 UTC | May 3, 04:37 UTC | 6h 29m |
| 2026-05-02 | UAL57 | EWR → CDG | May 2, 22:05 UTC | May 3, 04:45 UTC | 6h 39m |
| 2026-05-02 | UAL22 | DUB → EWR | May 2, 08:35 UTC | May 2, 09:25 UTC | 50m |
| 2026-05-02 | UAL22 | DUB → EWR | May 2, 08:40 UTC | May 2, 15:09 UTC | 6h 29m |
| 2026-05-02 | UAL22 | DUB → EWR | May 2, 08:40 UTC | May 2, 15:12 UTC | 6h 32m |
| 2026-05-02 | UAL23 | EWR → DUB | May 2, 00:00 UTC | May 2, 06:05 UTC | 6h 5m |
| 2026-05-01 | UAL435 | KOA → SFO | May 1, 16:15 UTC | May 1, 20:50 UTC | 4h 35m |
| 2026-05-01 | UAL97 | BNE → SFO | May 1, 00:50 UTC | May 1, 13:00 UTC | 12h 10m |
| 2026-04-30 | UAL96 | SFO → BNE | Apr 30, 07:15 UTC | Apr 30, 07:40 UTC | 25m |
| 2026-04-30 | UAL96 | SFO → BNE | Apr 30, 06:51 UTC | Apr 30, 20:41 UTC | 13h 50m |
| 2026-04-29 | UAL939 | LHR → SFO | Apr 29, 15:50 UTC | Apr 29, 20:40 UTC | 4h 50m |
| 2026-04-29 | UAL939 | LHR → SFO | Apr 29, 15:39 UTC | Apr 30, 02:04 UTC | 10h 25m |
| 2026-04-29 | UAL930 | SFO → LHR | Apr 29, 02:45 UTC | Apr 29, 13:10 UTC | 10h 26m |
| 2026-04-28 | UAL900 | LHR → SFO | Apr 28, 10:05 UTC | Apr 28, 20:15 UTC | 10h 10m |
| 2026-04-27 | UAL901 | SFO → LHR | Apr 27, 20:30 UTC | Apr 28, 06:25 UTC | 9h 55m |
| 2026-04-27 | UAL838 | NRT → SFO | Apr 27, 08:35 UTC | Apr 27, 17:10 UTC | 8h 35m |
| 2026-04-26 | UAL837 | SFO → NRT | Apr 26, 19:10 UTC | Apr 27, 05:40 UTC | 10h 30m |
| 2026-04-26 | UAL876 | HND → SFO | Apr 26, 07:25 UTC | Apr 26, 16:30 UTC | 9h 5m |
| 2026-04-25 | UAL131 | EWR → HND | Apr 25, 14:35 UTC | Apr 26, 04:00 UTC | 13h 25m |
| 2026-04-25 | UAL2397 | EWR → PDX | Apr 25, 04:35 UTC | Apr 25, 08:50 UTC | 4h 15m |
| 2026-04-24 | UAL2238 | IAH → SFO | Apr 24, 20:05 UTC | Apr 25, 01:20 UTC | 5h 15m |
| 2026-04-24 | UAL56 | CDG → EWR | Apr 24, 08:00 UTC | Apr 24, 09:00 UTC | 1h 0m |
| 2026-04-24 | UAL56 | CDG → EWR | Apr 24, 08:09 UTC | Apr 24, 14:58 UTC | 6h 49m |
| 2026-04-23 | UAL915 | IAD → CDG | Apr 23, 22:26 UTC | Apr 24, 05:36 UTC | 7h 10m |
| 2026-04-23 | UAL915 | IAD → CDG | Apr 23, 22:25 UTC | Apr 24, 05:40 UTC | 7h 15m |
| 2026-04-22 | UAL933 | FRA → IAD | Apr 22, 15:30 UTC | Apr 22, 23:20 UTC | 7h 50m |
| 2026-04-22 | UAL932 | IAD → FRA | Apr 22, 02:30 UTC | Apr 22, 10:10 UTC | 7h 40m |
| 2026-04-21 | UAL933 | FRA → IAD | Apr 21, 15:45 UTC | Apr 21, 23:35 UTC | 7h 50m |
| 2026-04-20 | UAL46 | IAH → FRA | Apr 20, 23:40 UTC | Apr 21, 09:10 UTC | 9h 30m |
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 N78005 page for operator, model, and routing details .