Apparatus

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sensors Mode-S transponder

A00BDD

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1018B · DE HAVILLAND DHC-3 Otter · operated by SUMMIT LEASING LLC

Hex
A00BDD
Octal
50005735
Decimal
10,488,797
Country
US
Tail
N1018B
Type
DHC3
No current signal · last broadcast 25d ago
Flights observed
243
Distinct callsigns
1
Country
US
Last broadcast
25d ago

Last known position

Most recent position reported by Mode-S A00BDD.

Country allocation

The ICAO 24-bit address A00BDD 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 1 distinct

Callsign Airline Flights Last seen
N1018B - 243 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N1018B - Jul 26, 20:00 UTCJul 26, 21:15 UTC1h 15m
2026-07-26 N1018B - Jul 26, 14:50 UTCJul 26, 16:30 UTC1h 40m
2026-07-26 N1018B - Jul 26, 03:30 UTCJul 26, 04:00 UTC30m
2026-07-26 N1018B - Jul 26, 02:35 UTCJul 26, 02:55 UTC20m
2026-07-26 N1018B - Jul 26, 01:20 UTCJul 26, 02:10 UTC50m
2026-07-25 N1018B - Jul 25, 22:50 UTCJul 25, 23:20 UTC30m
2026-07-25 N1018B - Jul 25, 21:55 UTCJul 25, 22:20 UTC25m
2026-07-25 N1018B - Jul 25, 19:55 UTCJul 25, 21:20 UTC1h 25m
2026-07-25 N1018B - Jul 25, 17:40 UTCJul 25, 18:00 UTC20m
2026-07-25 N1018B - Jul 25, 14:45 UTCJul 25, 16:55 UTC2h 10m
2026-07-25 N1018B - Jul 25, 03:20 UTCJul 25, 04:30 UTC1h 10m
2026-07-25 N1018B - Jul 25, 00:55 UTCJul 25, 03:15 UTC2h 20m
2026-07-24 N1018B - Jul 24, 20:00 UTCJul 24, 23:10 UTC3h 10m
2026-07-24 N1018B - Jul 24, 18:55 UTCJul 24, 19:30 UTC35m
2026-07-24 N1018B - Jul 24, 16:55 UTCJul 24, 18:20 UTC1h 25m
2026-07-24 N1018B - Jul 24, 14:55 UTCJul 24, 16:45 UTC1h 50m
2026-07-23 N1018B - Jul 23, 01:35 UTCJul 23, 03:55 UTC2h 20m
2026-07-23 N1018B - Jul 23, 00:15 UTCJul 23, 00:30 UTC15m
2026-07-22 N1018B - Jul 22, 22:20 UTCJul 22, 23:10 UTC50m
2026-07-22 N1018B - Jul 22, 21:10 UTCJul 22, 22:15 UTC1h 5m
2026-07-22 N1018B - Jul 22, 20:05 UTCJul 22, 21:05 UTC1h 0m
2026-07-22 N1018B - Jul 22, 18:05 UTCJul 22, 18:50 UTC45m
2026-07-22 N1018B - Jul 22, 17:05 UTCJul 22, 17:45 UTC40m
2026-07-22 N1018B - Jul 22, 01:35 UTCJul 22, 02:35 UTC1h 0m
2026-07-21 N1018B - Jul 21, 21:00 UTCJul 21, 22:10 UTC1h 10m
2026-07-21 N1018B - Jul 21, 20:00 UTCJul 21, 20:45 UTC45m
2026-07-21 N1018B - Jul 21, 16:25 UTCJul 21, 16:55 UTC30m
2026-07-21 N1018B - Jul 21, 14:50 UTCJul 21, 16:15 UTC1h 25m
2026-07-21 N1018B - Jul 21, 01:30 UTCJul 21, 04:35 UTC3h 5m
2026-07-21 N1018B - Jul 21, 00:40 UTCJul 21, 00:55 UTC15m
2026-07-20 N1018B - Jul 20, 18:15 UTCJul 20, 23:30 UTC5h 15m
2026-07-20 N1018B - Jul 20, 15:00 UTCJul 20, 16:55 UTC1h 55m
2026-07-19 N1018B - Jul 19, 19:45 UTCJul 19, 21:45 UTC2h 0m
2026-07-19 N1018B - Jul 19, 14:50 UTCJul 19, 16:30 UTC1h 40m
2026-07-19 N1018B - Jul 19, 00:55 UTCJul 19, 02:40 UTC1h 45m
2026-07-18 N1018B - Jul 18, 20:05 UTCJul 18, 21:30 UTC1h 25m
2026-07-18 N1018B - Jul 18, 14:50 UTCJul 18, 15:35 UTC45m
2026-07-18 N1018B - Jul 18, 02:45 UTCJul 18, 04:05 UTC1h 21m
2026-07-18 N1018B - Jul 18, 00:50 UTCJul 18, 02:14 UTC1h 25m
2026-07-17 N1018B - Jul 17, 19:49 UTCJul 17, 23:25 UTC3h 35m
2026-07-17 N1018B - Jul 17, 15:49 UTCJul 17, 18:10 UTC2h 20m
2026-07-17 N1018B - Jul 17, 14:55 UTCJul 17, 15:40 UTC45m
2026-07-17 N1018B - Jul 17, 01:09 UTCJul 17, 02:34 UTC1h 25m
2026-07-16 N1018B - Jul 16, 22:35 UTCJul 16, 23:35 UTC1h 0m
2026-07-16 N1018B - Jul 16, 20:00 UTCJul 16, 21:25 UTC1h 25m
2026-07-16 N1018B - Jul 16, 17:54 UTCJul 16, 19:05 UTC1h 10m
2026-07-16 N1018B - Jul 16, 16:30 UTCJul 16, 17:10 UTC40m
2026-07-16 N1018B - Jul 16, 14:45 UTCJul 16, 15:30 UTC45m
2026-07-16 N1018B - Jul 16, 02:15 UTCJul 16, 04:55 UTC2h 40m
2026-07-16 N1018B - Jul 16, 01:00 UTCJul 16, 02:00 UTC1h 0m

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 N1018B page for operator, model, and routing details .

Mode-S A00BDD frequently asked

What is Mode-S code A00BDD?
A00BDD is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1018B.
Where is Mode-S A00BDD registered?
Mode-S code A00BDD 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 A00BDD broadcasting right now?
No active broadcast right now. Last signal was 25d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A00BDD, octal 50005735, decimal 10,488,797.
What flights does A00BDD operate?
Mode-S A00BDD has broadcast 1 distinct callsign, including N1018B.