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sensors Mode-S transponder

AB0D2E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N811BB · SAAB 2000 · operated by MEREGRASS INC

Hex
AB0D2E
Octal
52606456
Decimal
11,210,030
Country
US
Tail
N811BB
Type
SB20
No current signal · last broadcast 5h ago
Flights observed
162
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S AB0D2E.

Country allocation

The ICAO 24-bit address AB0D2E 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
QHD811 Meregrass 21 2026-06-28
SRY1402 - 20 2026-07-11
SRY1401 - 19 2026-07-11
SRY1404 - 10 2026-07-14
SRY1403 - 10 2026-07-14
SRY1406 - 9 2026-07-13
SRY1405 - 9 2026-07-13
SRY1801 - 7 2026-07-09
SRY1210 - 6 2026-07-08
SRY1802 - 5 2026-07-10
SRY1602 - 5 2026-07-10
SRY1601 - 5 2026-07-10
SRY1105 Sterling Airways 5 2026-07-07
0HD811 - 5 2026-05-13
SRY1103 - 4 2026-07-11
SRY1101 - 3 2026-07-12
SRY811 Sterling Airways 2 2026-05-21
SRY3101 - 2 2026-06-27
SRY1508 - 2 2026-07-05
SRY1507 - 2 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 SRY1404 HOM → ANC Jul 14, 03:45 UTCJul 14, 04:15 UTC30m
2026-07-14 SRY1403 - Jul 14, 02:30 UTCJul 14, 03:00 UTC30m
2026-07-13 SRY1406 - Jul 13, 23:25 UTCJul 14, 00:00 UTC35m
2026-07-13 SRY1405 - Jul 13, 22:25 UTCJul 13, 22:50 UTC25m
2026-07-12 SRY1101 - Jul 12, 18:50 UTCJul 13, 00:15 UTC5h 25m
2026-07-11 SRY1101 - Jul 11, 19:20 UTCJul 12, 00:45 UTC5h 25m
2026-07-11 SRY1402 HOM → ANC Jul 11, 16:20 UTCJul 11, 16:45 UTC25m
2026-07-11 SRY1401 - Jul 11, 15:05 UTCJul 11, 15:30 UTC25m
2026-07-11 SRY1103 - Jul 11, 00:10 UTCJul 11, 04:55 UTC4h 45m
2026-07-10 SRY1602 - Jul 10, 20:50 UTCJul 10, 21:55 UTC1h 5m
2026-07-10 SRY1601 - Jul 10, 18:45 UTCJul 10, 19:50 UTC1h 5m
2026-07-10 SRY1402 - Jul 10, 16:20 UTCJul 10, 16:45 UTC25m
2026-07-10 SRY1401 - Jul 10, 15:25 UTCJul 10, 15:50 UTC25m
2026-07-10 SRY1802 - Jul 10, 00:55 UTCJul 10, 02:50 UTC1h 55m
2026-07-09 SRY1801 - Jul 9, 21:55 UTCJul 10, 00:05 UTC2h 10m
2026-07-08 SRY1210 - Jul 8, 23:15 UTCJul 9, 00:55 UTC1h 40m
2026-07-08 SRY1210 - Jul 8, 20:40 UTCJul 8, 22:05 UTC1h 25m
2026-07-07 SRY1105 ANC → DUT Jul 7, 14:00 UTCJul 7, 19:40 UTC5h 40m
2026-07-07 SRY1404 - Jul 7, 04:00 UTCJul 7, 04:30 UTC30m
2026-07-07 SRY1403 - Jul 7, 02:30 UTCJul 7, 02:55 UTC25m
2026-07-06 SRY1406 - Jul 6, 23:35 UTCJul 7, 00:05 UTC30m
2026-07-06 SRY1405 - Jul 6, 22:30 UTCJul 6, 22:55 UTC25m
2026-07-06 SRY1105 ANC → DUT Jul 6, 14:05 UTCJul 6, 19:20 UTC5h 15m
2026-07-05 SRY1508 AKN → ANC Jul 5, 19:25 UTCJul 5, 20:30 UTC1h 5m
2026-07-05 SRY1507 - Jul 5, 18:00 UTCJul 5, 18:50 UTC50m
2026-07-05 SRY1406 - Jul 5, 01:05 UTCJul 5, 01:35 UTC30m
2026-07-04 SRY1405 - Jul 4, 23:45 UTCJul 5, 00:10 UTC25m
2026-07-04 SRY1201 - Jul 4, 21:05 UTCJul 4, 22:35 UTC1h 30m
2026-07-04 SRY1201 - Jul 4, 18:35 UTCJul 4, 20:05 UTC1h 30m
2026-07-03 SRY1103 - Jul 3, 23:55 UTCJul 4, 04:45 UTC4h 50m
2026-07-03 SRY1101 - Jul 3, 17:20 UTCJul 3, 22:30 UTC5h 10m
2026-07-03 SRY1402 HOM → ANC Jul 3, 16:20 UTCJul 3, 16:45 UTC25m
2026-07-03 SRY1401 ANC → HOM Jul 3, 15:10 UTCJul 3, 15:35 UTC25m
2026-07-03 SRY1404 - Jul 3, 03:50 UTCJul 3, 04:15 UTC25m
2026-07-03 SRY1403 - Jul 3, 02:30 UTCJul 3, 03:00 UTC30m
2026-07-02 SRY1406 - Jul 2, 23:45 UTCJul 3, 00:10 UTC25m
2026-07-02 SRY1405 - Jul 2, 22:40 UTCJul 2, 23:05 UTC25m
2026-07-02 SRY1508 - Jul 2, 20:10 UTCJul 2, 21:00 UTC50m
2026-07-02 SRY1507 - Jul 2, 18:40 UTCJul 2, 19:40 UTC1h 0m
2026-07-02 SRY1402 - Jul 2, 16:10 UTCJul 2, 16:35 UTC25m
2026-07-02 SRY1401 ANC → HOM Jul 2, 14:50 UTCJul 2, 15:15 UTC25m
2026-07-02 SRY1103 - Jul 2, 00:45 UTCJul 2, 05:35 UTC4h 50m
2026-07-01 SRY1406 HOM → ANC Jul 1, 23:45 UTCJul 2, 00:10 UTC25m
2026-07-01 SRY1405 - Jul 1, 22:40 UTCJul 1, 23:05 UTC25m
2026-07-01 SRY1105 ANC → DUT Jul 1, 14:30 UTCJul 1, 19:20 UTC4h 50m
2026-07-01 SRY1103 - Jul 1, 00:00 UTCJul 1, 05:10 UTC5h 10m
2026-06-30 SRY1105 ANC → DUT Jun 30, 14:20 UTCJun 30, 19:25 UTC5h 5m
2026-06-30 SRY1404 HOM → ANC Jun 30, 04:05 UTCJun 30, 04:35 UTC30m
2026-06-30 SRY1403 - Jun 30, 02:55 UTCJun 30, 03:20 UTC25m
2026-06-29 SRY1406 - Jun 29, 21:39 UTCJun 29, 22:19 UTC40m

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 N811BB page for operator, model, and routing details .

Mode-S AB0D2E frequently asked

What is Mode-S code AB0D2E?
AB0D2E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N811BB.
Where is Mode-S AB0D2E registered?
Mode-S code AB0D2E is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AB0D2E broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB0D2E, octal 52606456, decimal 11,210,030.
What flights does AB0D2E operate?
Mode-S AB0D2E has broadcast 20 distinct callsigns, including QHD811, SRY1402, SRY1401, SRY1404, SRY1403.