sensors Mode-S transponder
A1270B
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N17322 · BOEING 737 MAX 8 · operated by UMB BANK NA TRUSTEE
- Hex
- A1270B
- Octal
- 50223413
- Decimal
- 10,561,291
- Country
- US
- Tail
- N17322
- Type
- B38M
- Flights observed
- 241
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address A1270B 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 |
|---|---|---|---|
| UAL6 | - | 10 | 2026-07-13 |
| UAL7 | - | 6 | 2026-07-14 |
| UAL197 | - | 6 | 2026-07-13 |
| UAL196 | - | 6 | 2026-07-14 |
| UAL849 | - | 5 | 2026-07-10 |
| UAL848 | - | 5 | 2026-06-27 |
| UAL33 | - | 4 | 2026-07-07 |
| UAL2866 | United Airlines | 4 | 2026-04-24 |
| UAL2425 | United Airlines | 4 | 2026-05-10 |
| UAL143 | - | 4 | 2026-07-11 |
| UAL757 | United Airlines | 3 | 2026-05-19 |
| UAL649 | United Airlines | 3 | 2026-04-21 |
| UAL436 | United Airlines | 3 | 2026-04-15 |
| UAL3901 | United Airlines | 3 | 2026-06-17 |
| UAL32 | - | 3 | 2026-07-06 |
| UAL2492 | - | 3 | 2026-04-13 |
| UAL2433 | United Airlines | 3 | 2026-04-15 |
| UAL2367 | - | 3 | 2026-04-13 |
| UAL1908 | United Airlines | 3 | 2026-05-07 |
| UAL1815 | United Airlines | 3 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | UAL7 | - | Jul 14, 08:00 UTC | Jul 14, 11:05 UTC | 3h 5m |
| 2026-07-14 | UAL196 | - | Jul 14, 05:15 UTC | Jul 14, 06:05 UTC | 50m |
| 2026-07-13 | UAL196 | - | Jul 13, 08:50 UTC | Jul 14, 06:05 UTC | 21h 15m |
| 2026-07-13 | UAL197 | - | Jul 13, 08:15 UTC | Jul 13, 08:50 UTC | 35m |
| 2026-07-13 | UAL197 | NRT → GUM | Jul 13, 08:27 UTC | Jul 13, 11:19 UTC | 2h 52m |
| 2026-07-13 | UAL6 | NRT → IAH | Jul 13, 02:27 UTC | Jul 13, 06:35 UTC | 4h 8m |
| 2026-07-12 | UAL6 | - | Jul 12, 08:50 UTC | Jul 13, 06:45 UTC | 21h 55m |
| 2026-07-12 | UAL7 | - | Jul 12, 07:50 UTC | Jul 13, 06:45 UTC | 22h 55m |
| 2026-07-12 | UAL142 | ROR → NRT | Jul 12, 01:50 UTC | Jul 12, 06:10 UTC | 4h 20m |
| 2026-07-11 | UAL143 | - | Jul 11, 08:50 UTC | Jul 11, 12:45 UTC | 3h 55m |
| 2026-07-11 | UAL143 | DEN → NRT | Jul 11, 08:42 UTC | Jul 11, 12:38 UTC | 3h 56m |
| 2026-07-10 | UAL196 | HND → NRT | Jul 10, 14:45 UTC | Jul 11, 05:50 UTC | 15h 5m |
| 2026-07-10 | UAL849 | - | Jul 10, 12:20 UTC | Jul 10, 13:00 UTC | 40m |
| 2026-07-10 | UAL150 | KIX → GUM | Jul 10, 02:25 UTC | Jul 10, 05:30 UTC | 3h 5m |
| 2026-07-10 | UAL150 | - | Jul 10, 02:20 UTC | Jul 10, 02:35 UTC | 15m |
| 2026-07-10 | UAL151 | - | Jul 10, 00:15 UTC | Jul 10, 00:35 UTC | 20m |
| 2026-07-08 | UAL197 | - | Jul 8, 09:45 UTC | Jul 8, 10:20 UTC | 35m |
| 2026-07-08 | UAL197 | NRT → GUM | Jul 8, 09:17 UTC | Jul 8, 12:49 UTC | 3h 32m |
| 2026-07-08 | UAL6 | - | Jul 8, 05:05 UTC | Jul 8, 07:05 UTC | 2h 0m |
| 2026-07-07 | UAL6 | - | Jul 7, 11:10 UTC | Jul 8, 07:05 UTC | 19h 55m |
| 2026-07-07 | UAL6 | - | Jul 7, 08:50 UTC | Jul 8, 07:05 UTC | 22h 15m |
| 2026-07-07 | UAL7 | - | Jul 7, 08:25 UTC | Jul 8, 06:45 UTC | 22h 20m |
| 2026-07-07 | UAL33 | CEB → NRT | Jul 7, 01:36 UTC | Jul 7, 05:49 UTC | 4h 13m |
| 2026-07-06 | UAL32 | - | Jul 6, 09:10 UTC | Jul 6, 09:55 UTC | 45m |
| 2026-07-06 | UAL32 | NRT → CEB | Jul 6, 09:22 UTC | Jul 6, 13:21 UTC | 3h 59m |
| 2026-07-06 | UAL6 | - | Jul 6, 04:20 UTC | Jul 6, 06:20 UTC | 2h 0m |
| 2026-07-05 | UAL6 | - | Jul 5, 08:50 UTC | Jul 6, 06:20 UTC | 21h 30m |
| 2026-07-05 | UAL7 | - | Jul 5, 08:10 UTC | Jul 5, 08:45 UTC | 35m |
| 2026-07-05 | UAL7 | NRT → UBN | Jul 5, 08:12 UTC | Jul 5, 12:58 UTC | 4h 46m |
| 2026-07-05 | UAL142 | NRT → DEN | Jul 5, 02:25 UTC | Jul 5, 02:50 UTC | 25m |
| 2026-07-05 | UAL142 | NRT → DEN | Jul 5, 02:03 UTC | Jul 5, 06:35 UTC | 4h 32m |
| 2026-07-04 | UAL143 | DEN → NRT | Jul 4, 08:15 UTC | Jul 4, 12:20 UTC | 4h 5m |
| 2026-07-04 | UAL143 | DEN → NRT | Jul 4, 08:12 UTC | Jul 4, 12:18 UTC | 4h 6m |
| 2026-07-04 | UAL196 | - | Jul 4, 05:05 UTC | Jul 4, 05:55 UTC | 50m |
| 2026-07-03 | UAL136 | - | Jul 3, 02:45 UTC | Jul 3, 03:10 UTC | 25m |
| 2026-07-03 | UAL136 | NGO → GUM | Jul 3, 02:45 UTC | Jul 3, 05:44 UTC | 2h 59m |
| 2026-07-01 | UAL132 | - | Jul 1, 17:40 UTC | Jul 1, 17:55 UTC | 15m |
| 2026-07-01 | UAL132 | HNL → MAJ | Jul 1, 17:38 UTC | Jul 1, 22:15 UTC | 4h 37m |
| 2026-07-01 | UAL133 | - | Jul 1, 14:00 UTC | Jul 1, 14:20 UTC | 20m |
| 2026-07-01 | UAL133 | MAJ → HNL | Jul 1, 09:37 UTC | Jul 1, 14:16 UTC | 4h 39m |
| 2026-06-30 | UAL197 | - | Jun 30, 08:30 UTC | Jun 30, 09:05 UTC | 35m |
| 2026-06-29 | UAL33 | - | Jun 29, 12:39 UTC | Jun 30, 05:55 UTC | 17h 15m |
| 2026-06-29 | UAL32 | - | Jun 29, 09:10 UTC | Jun 30, 05:55 UTC | 20h 45m |
| 2026-06-29 | UAL196 | - | Jun 29, 05:15 UTC | Jun 29, 06:05 UTC | 50m |
| 2026-06-27 | UAL848 | HND → GUM | Jun 27, 15:00 UTC | Jun 27, 18:04 UTC | 3h 4m |
| 2026-06-27 | UAL848 | - | Jun 27, 14:54 UTC | Jun 27, 15:30 UTC | 35m |
| 2026-06-27 | UAL849 | - | Jun 27, 12:04 UTC | Jun 27, 12:50 UTC | 45m |
| 2026-06-27 | UAL166 | - | Jun 27, 03:25 UTC | Jun 27, 03:40 UTC | 15m |
| 2026-06-27 | UAL166 | TPE → GUM | Jun 27, 03:17 UTC | Jun 27, 06:55 UTC | 3h 38m |
| 2026-06-26 | UAL165 | GUM → TPE | Jun 26, 21:58 UTC | Jun 27, 01:48 UTC | 3h 50m |
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 N17322 page for operator, model, and routing details .