sensors Mode-S transponder
AA6943
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N770CK · BOEING 777-300ER · operated by BANK OF UTAH TRUSTEE
- Hex
- AA6943
- Octal
- 52464503
- Decimal
- 11,168,067
- Country
- US
- Tail
- N770CK
- Type
- B77W
- Flights observed
- 93
- Distinct callsigns
- 15
- Country
- US
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address AA6943 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CKS524 | Kalitta Air | 23 | 2026-05-28 |
| CKS523 | Kalitta Air | 20 | 2026-05-29 |
| CKS526 | Kalitta Air | 16 | 2026-05-25 |
| CKS551 | Kalitta Air | 10 | 2026-04-24 |
| CKS550 | Kalitta Air | 8 | 2026-04-23 |
| CKS9770 | Kalitta Air | 3 | 2026-04-21 |
| CKS9907 | Kalitta Air | 2 | 2026-05-29 |
| CKS616 | Kalitta Air | 2 | 2026-05-10 |
| CKS5960 | Kalitta Air | 2 | 2026-06-02 |
| CKS5928 | Kalitta Air | 2 | 2026-05-31 |
| CKS935 | Kalitta Air | 1 | 2026-05-31 |
| CKS916 | Kalitta Air | 1 | 2026-06-02 |
| CKS901 | Kalitta Air | 1 | 2026-06-01 |
| CKS5965 | Kalitta Air | 1 | 2026-05-30 |
| CKS5915 | Kalitta Air | 1 | 2026-05-30 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CKS5960 | ONT → HNL | Jun 2, 21:50 UTC | Jun 3, 02:45 UTC | 4h 55m |
| 2026-06-02 | CKS916 | YYZ → ANC | Jun 2, 07:15 UTC | Jun 2, 11:00 UTC | 3h 45m |
| 2026-06-01 | CKS901 | ONT → SDF | Jun 1, 23:55 UTC | Jun 2, 03:15 UTC | 3h 20m |
| 2026-05-31 | CKS5928 | SDF → ONT | May 31, 22:05 UTC | Jun 1, 01:45 UTC | 3h 40m |
| 2026-05-31 | CKS935 | ANC → ORD | May 31, 09:25 UTC | May 31, 12:40 UTC | 3h 15m |
| 2026-05-30 | CKS5928 | SDF → ONT | May 30, 22:15 UTC | May 31, 01:11 UTC | 2h 57m |
| 2026-05-30 | CKS5915 | ONT → SDF | May 30, 14:15 UTC | May 30, 17:35 UTC | 3h 20m |
| 2026-05-30 | CKS5965 | HNL → ONT | May 30, 06:00 UTC | May 30, 10:40 UTC | 4h 40m |
| 2026-05-29 | CKS5960 | ONT → HNL | May 29, 22:10 UTC | May 30, 03:25 UTC | 5h 15m |
| 2026-05-29 | CKS9907 | JFK → CVG | May 29, 18:00 UTC | May 29, 18:20 UTC | 20m |
| 2026-05-29 | CKS523 | SFO → FCO | May 29, 10:05 UTC | May 29, 14:35 UTC | 4h 30m |
| 2026-05-28 | CKS523 | SFO → FCO | May 28, 21:45 UTC | May 29, 07:35 UTC | 9h 50m |
| 2026-05-28 | CKS524 | AMS → LCK | May 28, 18:35 UTC | May 28, 18:50 UTC | 15m |
| 2026-05-28 | CKS524 | AMS → LCK | May 28, 15:20 UTC | May 28, 15:45 UTC | 25m |
| 2026-05-27 | CKS524 | AMS → LCK | May 27, 23:15 UTC | May 28, 13:05 UTC | 13h 50m |
| 2026-05-27 | CKS523 | SFO → FCO | May 27, 14:25 UTC | May 27, 19:35 UTC | 5h 10m |
| 2026-05-26 | CKS523 | SFO → FCO | May 26, 18:50 UTC | May 27, 11:45 UTC | 16h 55m |
| 2026-05-26 | CKS524 | AMS → LCK | May 26, 03:05 UTC | May 26, 16:35 UTC | 13h 30m |
| 2026-05-25 | CKS526 | ORD → NGO | May 25, 04:20 UTC | May 25, 10:00 UTC | 5h 40m |
| 2026-05-25 | CKS526 | ORD → NGO | May 25, 01:55 UTC | May 25, 02:25 UTC | 30m |
| 2026-05-24 | CKS526 | ORD → NGO | May 24, 18:30 UTC | May 24, 20:15 UTC | 1h 45m |
| 2026-05-24 | CKS526 | ORD → NGO | May 24, 13:25 UTC | May 24, 16:10 UTC | 2h 45m |
| 2026-05-24 | CKS524 | AMS → LCK | May 24, 02:00 UTC | May 24, 07:25 UTC | 5h 25m |
| 2026-05-23 | CKS524 | AMS → LCK | May 23, 04:35 UTC | May 23, 16:55 UTC | 12h 20m |
| 2026-05-22 | CKS523 | SFO → FCO | May 22, 16:10 UTC | May 22, 20:35 UTC | 4h 25m |
| 2026-05-21 | CKS523 | SFO → FCO | May 21, 17:00 UTC | May 22, 09:50 UTC | 16h 50m |
| 2026-05-20 | CKS524 | AMS → LCK | May 20, 10:15 UTC | May 21, 00:25 UTC | 14h 10m |
| 2026-05-19 | CKS523 | SFO → FCO | May 19, 22:50 UTC | May 20, 04:15 UTC | 5h 25m |
| 2026-05-19 | CKS523 | SFO → FCO | May 19, 03:35 UTC | May 19, 21:10 UTC | 17h 35m |
| 2026-05-18 | CKS524 | AMS → LCK | May 18, 11:20 UTC | May 19, 01:00 UTC | 13h 39m |
| 2026-05-18 | CKS526 | ORD → NGO | May 18, 02:50 UTC | May 18, 08:30 UTC | 5h 40m |
| 2026-05-17 | CKS526 | ORD → NGO | May 17, 12:30 UTC | May 17, 20:10 UTC | 7h 40m |
| 2026-05-17 | CKS526 | ORD → NGO | May 17, 07:05 UTC | May 17, 09:55 UTC | 2h 50m |
| 2026-05-16 | CKS524 | AMS → LCK | May 16, 19:40 UTC | May 17, 00:40 UTC | 5h 0m |
| 2026-05-16 | CKS524 | AMS → LCK | May 16, 04:45 UTC | May 16, 17:01 UTC | 12h 16m |
| 2026-05-15 | CKS523 | SFO → FCO | May 15, 18:20 UTC | May 15, 22:40 UTC | 4h 20m |
| 2026-05-15 | CKS523 | SFO → FCO | May 15, 07:35 UTC | May 15, 15:45 UTC | 8h 9m |
| 2026-05-14 | CKS524 | AMS → LCK | May 14, 07:15 UTC | May 14, 08:00 UTC | 45m |
| 2026-05-13 | CKS524 | AMS → LCK | May 13, 14:05 UTC | May 14, 03:50 UTC | 13h 45m |
| 2026-05-13 | CKS523 | SFO → FCO | May 13, 05:50 UTC | May 13, 11:00 UTC | 5h 10m |
| 2026-05-12 | CKS523 | SFO → FCO | May 12, 11:25 UTC | May 13, 04:00 UTC | 16h 35m |
| 2026-05-11 | CKS524 | AMS → LCK | May 11, 19:00 UTC | May 12, 08:40 UTC | 13h 40m |
| 2026-05-11 | CKS526 | ORD → NGO | May 11, 06:45 UTC | May 11, 12:15 UTC | 5h 30m |
| 2026-05-10 | CKS526 | ORD → NGO | May 10, 21:00 UTC | May 11, 04:30 UTC | 7h 30m |
| 2026-05-10 | CKS526 | ORD → NGO | May 10, 16:25 UTC | May 10, 19:15 UTC | 2h 50m |
| 2026-05-10 | CKS616 | CVG → ANC | May 10, 04:04 UTC | May 10, 09:20 UTC | 5h 15m |
| 2026-05-09 | CKS616 | CVG → ANC | May 9, 01:45 UTC | May 9, 14:25 UTC | 12h 40m |
| 2026-05-08 | CKS9907 | JFK → CVG | May 8, 20:45 UTC | May 8, 21:00 UTC | 15m |
| 2026-05-07 | CKS523 | SFO → FCO | May 7, 22:25 UTC | May 8, 02:55 UTC | 4h 29m |
| 2026-05-07 | CKS523 | SFO → FCO | May 7, 03:15 UTC | May 7, 20:10 UTC | 16h 55m |
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 N770CK page for operator, model, and routing details .