sensors Mode-S transponder
4A2182
ICAO 24-bit transponder address · allocated to Romania
Currently assigned to YR-HLB · BOEING 737-800
- Hex
- 4A2182
- Octal
- 22420602
- Decimal
- 4,858,242
- Country
- RO
- Tail
- YR-HLB
- Type
- B738
- Flights observed
- 157
- Distinct callsigns
- 20
- Country
- RO
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address 4A2182 falls within the block assigned to Romania (RO) by ICAO Annex 10, Volume III. Every aircraft registered in Romania 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 |
|---|---|---|---|
| HLJ1AC | - | 41 | 2026-07-11 |
| HLJ1EG | - | 33 | 2026-07-13 |
| HLJ3DF | - | 13 | 2026-07-03 |
| HLJ1AD | - | 13 | 2026-07-13 |
| HLJ3AP | - | 11 | 2026-07-12 |
| HLJ5AN | - | 6 | 2026-07-14 |
| HLJ1QR | - | 6 | 2026-07-07 |
| HLJ260 | - | 4 | 2026-06-30 |
| HLJ1CF | - | 4 | 2026-07-11 |
| HLJ261 | - | 3 | 2026-06-30 |
| HLJ814F | - | 2 | 2026-06-10 |
| HLJ4AB | - | 2 | 2026-06-11 |
| HLJ3SB | - | 2 | 2026-07-14 |
| HLJ909T | - | 1 | 2026-06-24 |
| HLJ815F | - | 1 | 2026-06-11 |
| HLJ813F | Hello Jets | 1 | 2026-06-04 |
| HLJ810F | - | 1 | 2026-05-28 |
| HLJ808F | - | 1 | 2026-05-27 |
| HLJ804F | - | 1 | 2026-05-21 |
| HLJ803F | - | 1 | 2026-05-21 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | HLJ5AN | - | Jul 14, 08:05 UTC | Jul 14, 09:50 UTC | 1h 45m |
| 2026-07-14 | HLJ3SB | - | Jul 14, 05:00 UTC | Jul 14, 06:00 UTC | 1h 0m |
| 2026-07-13 | HLJ1AD | - | Jul 13, 12:35 UTC | Jul 13, 22:55 UTC | 10h 20m |
| 2026-07-13 | HLJ1EG | - | Jul 13, 00:25 UTC | Jul 13, 11:20 UTC | 10h 55m |
| 2026-07-12 | HLJ1AD | - | Jul 12, 18:05 UTC | Jul 12, 20:25 UTC | 2h 20m |
| 2026-07-12 | HLJ3AP | - | Jul 12, 10:10 UTC | Jul 12, 17:10 UTC | 7h 0m |
| 2026-07-11 | HLJ1CF | - | Jul 11, 22:15 UTC | Jul 12, 08:35 UTC | 10h 20m |
| 2026-07-11 | HLJ1AC | - | Jul 11, 13:20 UTC | Jul 11, 20:50 UTC | 7h 30m |
| 2026-07-11 | HLJ3AP | - | Jul 11, 10:25 UTC | Jul 11, 12:55 UTC | 2h 30m |
| 2026-07-10 | HLJ1EG | - | Jul 10, 22:25 UTC | Jul 11, 08:40 UTC | 10h 15m |
| 2026-07-09 | HLJ1AC | BRQ → BRQ | Jul 9, 22:35 UTC | Jul 10, 09:40 UTC | 11h 5m |
| 2026-07-07 | HLJ1AC | BRQ → BRQ | Jul 7, 22:40 UTC | Jul 8, 09:45 UTC | 11h 5m |
| 2026-07-07 | HLJ6SS | - | Jul 7, 15:00 UTC | Jul 7, 16:15 UTC | 1h 15m |
| 2026-07-07 | HLJ1QR | - | Jul 7, 11:20 UTC | Jul 7, 12:30 UTC | 1h 10m |
| 2026-07-07 | HLJ5AN | - | Jul 7, 08:30 UTC | Jul 7, 09:55 UTC | 1h 25m |
| 2026-07-07 | HLJ3SB | BRQ → TGD | Jul 7, 05:20 UTC | Jul 7, 06:20 UTC | 1h 0m |
| 2026-07-06 | HLJ1AD | - | Jul 6, 12:25 UTC | Jul 6, 22:50 UTC | 10h 25m |
| 2026-07-06 | HLJ1EG | BRQ → OSR | Jul 6, 00:45 UTC | Jul 6, 11:20 UTC | 10h 35m |
| 2026-07-05 | HLJ1AD | - | Jul 5, 10:15 UTC | Jul 5, 20:50 UTC | 10h 35m |
| 2026-07-04 | HLJ1EG | - | Jul 4, 22:30 UTC | Jul 5, 08:40 UTC | 10h 10m |
| 2026-07-04 | HLJ1AC | - | Jul 4, 10:15 UTC | Jul 4, 21:00 UTC | 10h 45m |
| 2026-07-04 | HLJ1EG | - | Jul 4, 05:45 UTC | Jul 4, 09:00 UTC | 3h 15m |
| 2026-07-03 | HLJ3DF | - | Jul 3, 22:10 UTC | Jul 4, 00:20 UTC | 2h 10m |
| 2026-07-02 | HLJ1AC | BRQ → BRQ | Jul 2, 22:35 UTC | Jul 3, 09:35 UTC | 11h 0m |
| 2026-06-30 | HLJ3DF | - | Jun 30, 22:40 UTC | Jul 1, 09:20 UTC | 10h 40m |
| 2026-06-30 | HLJ261 | - | Jun 30, 14:35 UTC | Jun 30, 15:45 UTC | 1h 10m |
| 2026-06-30 | HLJ1QR | - | Jun 30, 11:30 UTC | Jun 30, 12:50 UTC | 1h 20m |
| 2026-06-30 | HLJ5AN | - | Jun 30, 08:20 UTC | Jun 30, 09:40 UTC | 1h 20m |
| 2026-06-30 | HLJ260 | - | Jun 30, 05:25 UTC | Jun 30, 06:30 UTC | 1h 5m |
| 2026-06-29 | HLJ3DF | - | Jun 29, 00:14 UTC | Jun 29, 11:10 UTC | 10h 55m |
| 2026-06-28 | HLJ3AP | - | Jun 28, 09:55 UTC | Jun 28, 19:55 UTC | 10h 0m |
| 2026-06-27 | HLJ1CF | - | Jun 27, 22:25 UTC | Jun 28, 08:50 UTC | 10h 25m |
| 2026-06-27 | HLJ3AP | - | Jun 27, 10:00 UTC | Jun 27, 20:39 UTC | 10h 40m |
| 2026-06-26 | HLJ1EG | - | Jun 26, 22:10 UTC | Jun 27, 08:49 UTC | 10h 40m |
| 2026-06-25 | HLJ1AC | BRQ → BRQ | Jun 25, 22:39 UTC | Jun 26, 09:45 UTC | 11h 5m |
| 2026-06-24 | HLJ909T | BRQ → BRQ | Jun 24, 11:09 UTC | Jun 24, 13:54 UTC | 2h 45m |
| 2026-06-23 | HLJ1AC | BRQ → BRQ | Jun 23, 22:15 UTC | Jun 24, 09:45 UTC | 11h 30m |
| 2026-06-23 | HLJ261 | - | Jun 23, 14:35 UTC | Jun 23, 15:50 UTC | 1h 15m |
| 2026-06-23 | HLJ1QR | - | Jun 23, 11:14 UTC | Jun 23, 12:35 UTC | 1h 20m |
| 2026-06-23 | HLJ5AN | - | Jun 23, 08:20 UTC | Jun 23, 09:40 UTC | 1h 20m |
| 2026-06-23 | HLJ260 | - | Jun 23, 05:00 UTC | Jun 23, 06:04 UTC | 1h 5m |
| 2026-06-22 | HLJ1AC | - | Jun 22, 00:10 UTC | Jun 22, 11:35 UTC | 11h 25m |
| 2026-06-21 | HLJ1AD | - | Jun 21, 09:44 UTC | Jun 21, 20:00 UTC | 10h 15m |
| 2026-06-20 | HLJ1EG | - | Jun 20, 22:25 UTC | Jun 21, 08:30 UTC | 10h 5m |
| 2026-06-20 | HLJ1AC | - | Jun 20, 10:15 UTC | Jun 20, 20:55 UTC | 10h 40m |
| 2026-06-19 | HLJ1EG | - | Jun 19, 22:14 UTC | Jun 20, 08:34 UTC | 10h 20m |
| 2026-06-18 | HLJ1AC | - | Jun 18, 22:40 UTC | Jun 19, 09:34 UTC | 10h 54m |
| 2026-06-16 | HLJ1AC | BRQ → BRQ | Jun 16, 22:55 UTC | Jun 17, 09:20 UTC | 10h 25m |
| 2026-06-16 | HLJ1QR | PRG → BRQ | Jun 16, 11:15 UTC | Jun 16, 15:50 UTC | 4h 35m |
| 2026-06-16 | HLJ5AN | - | Jun 16, 08:20 UTC | Jun 16, 09:45 UTC | 1h 25m |
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 YR-HLB page for operator, model, and routing details .