Apparatus

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sensors Mode-S transponder

A0DDD7

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N155MB · ROBINSON R-22 Mariner · operated by EMERALD CITY AIRCRAFT LEASING INC

Hex
A0DDD7
Octal
50156727
Decimal
10,542,551
Country
US
Tail
N155MB
Type
R22
No current signal · last broadcast 27d ago
Flights observed
124
Distinct callsigns
1
Country
US
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S A0DDD7.

Country allocation

The ICAO 24-bit address A0DDD7 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
N155MB - 124 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N155MB - Jul 26, 20:55 UTCJul 26, 21:35 UTC40m
2026-07-24 N155MB SFF → SFF Jul 24, 21:05 UTCJul 24, 21:50 UTC45m
2026-07-24 N155MB SFF → SFF Jul 24, 15:35 UTCJul 24, 16:15 UTC40m
2026-07-22 N155MB - Jul 22, 15:40 UTCJul 22, 15:55 UTC15m
2026-07-21 N155MB SFF → SFF Jul 21, 21:45 UTCJul 21, 22:20 UTC35m
2026-07-20 N155MB - Jul 20, 22:35 UTCJul 20, 23:10 UTC35m
2026-07-20 N155MB SFF → SFF Jul 20, 15:35 UTCJul 20, 16:15 UTC40m
2026-07-17 N155MB SFF → SFF Jul 17, 21:25 UTCJul 17, 21:44 UTC20m
2026-07-17 N155MB - Jul 17, 19:49 UTCJul 17, 20:29 UTC40m
2026-07-16 N155MB - Jul 16, 19:45 UTCJul 16, 20:35 UTC50m
2026-07-15 N155MB SFF → SFF Jul 15, 19:20 UTCJul 15, 20:00 UTC40m
2026-07-15 N155MB SFF → SFF Jul 15, 17:25 UTCJul 15, 18:15 UTC50m
2026-07-15 N155MB SFF → SFF Jul 15, 15:20 UTCJul 15, 15:35 UTC15m
2026-07-14 N155MB SFF → SFF Jul 14, 23:20 UTCJul 14, 23:35 UTC15m
2026-07-14 N155MB SFF → SFF Jul 14, 21:40 UTCJul 14, 22:20 UTC40m
2026-07-14 N155MB SFF → SFF Jul 14, 17:25 UTCJul 14, 18:10 UTC45m
2026-07-13 N155MB - Jul 13, 23:20 UTCJul 14, 01:05 UTC1h 45m
2026-07-12 N155MB SFF → SFF Jul 12, 19:45 UTCJul 12, 20:05 UTC20m
2026-07-10 N155MB SFF → SFF Jul 10, 20:25 UTCJul 10, 21:20 UTC55m
2026-07-09 N155MB - Jul 9, 17:40 UTCJul 9, 17:55 UTC15m
2026-07-08 N155MB SFF → SFF Jul 8, 15:25 UTCJul 8, 15:50 UTC25m
2026-07-07 N155MB - Jul 7, 23:25 UTCJul 8, 01:05 UTC1h 40m
2026-07-07 N155MB SFF → SFF Jul 7, 21:40 UTCJul 7, 22:15 UTC35m
2026-07-07 N155MB SFF → SFF Jul 7, 17:45 UTCJul 7, 18:20 UTC35m
2026-07-06 N155MB - Jul 6, 20:10 UTCJul 6, 20:35 UTC25m
2026-07-06 N155MB - Jul 6, 17:00 UTCJul 6, 17:25 UTC25m
2026-07-03 N155MB - Jul 3, 18:20 UTCJul 3, 18:35 UTC15m
2026-07-03 N155MB - Jul 3, 15:35 UTCJul 3, 16:05 UTC30m
2026-07-02 N155MB SFF → SFF Jul 2, 19:55 UTCJul 2, 20:30 UTC35m
2026-07-02 N155MB SFF → SFF Jul 2, 15:50 UTCJul 2, 16:25 UTC35m
2026-06-30 N155MB SFF → SFF Jun 30, 21:20 UTCJun 30, 22:00 UTC40m
2026-06-30 N155MB SFF → SFF Jun 30, 16:35 UTCJun 30, 17:25 UTC50m
2026-06-29 N155MB - Jun 29, 19:20 UTCJun 29, 19:35 UTC15m
2026-06-26 N155MB SFF → SFF Jun 26, 20:24 UTCJun 26, 21:15 UTC50m
2026-06-25 N155MB - Jun 25, 21:10 UTCJun 25, 21:55 UTC45m
2026-06-25 N155MB SFF → SFF Jun 25, 15:20 UTCJun 25, 16:14 UTC55m
2026-06-24 N155MB - Jun 24, 21:54 UTCJun 24, 22:45 UTC50m
2026-06-24 N155MB - Jun 24, 20:44 UTCJun 24, 20:54 UTC10m
2026-06-24 N155MB - Jun 24, 20:14 UTCJun 24, 20:30 UTC15m
2026-06-23 N155MB SFF → SFF Jun 23, 21:24 UTCJun 23, 22:15 UTC50m
2026-06-23 N155MB SFF → SFF Jun 23, 17:34 UTCJun 23, 18:14 UTC40m
2026-06-22 N155MB SFF → SFF Jun 22, 17:50 UTCJun 22, 18:19 UTC30m
2026-06-19 N155MB SFF → SFF Jun 19, 15:54 UTCJun 19, 16:25 UTC30m
2026-06-18 N155MB SFF → SFF Jun 18, 21:30 UTCJun 18, 22:10 UTC40m
2026-06-18 N155MB - Jun 18, 19:25 UTCJun 18, 20:00 UTC35m
2026-06-17 N155MB SFF → SFF Jun 17, 21:30 UTCJun 17, 22:20 UTC50m
2026-06-16 N155MB SFF → SFF Jun 16, 15:30 UTCJun 16, 16:05 UTC35m
2026-06-14 N155MB - Jun 14, 22:40 UTCJun 14, 22:55 UTC15m
2026-06-14 N155MB SFF → SFF Jun 14, 17:30 UTCJun 14, 18:00 UTC30m
2026-06-12 N155MB SFF → SFF Jun 12, 21:15 UTCJun 12, 22:05 UTC50m

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 N155MB page for operator, model, and routing details .

Mode-S A0DDD7 frequently asked

What is Mode-S code A0DDD7?
A0DDD7 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N155MB.
Where is Mode-S A0DDD7 registered?
Mode-S code A0DDD7 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 A0DDD7 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0DDD7, octal 50156727, decimal 10,542,551.
What flights does A0DDD7 operate?
Mode-S A0DDD7 has broadcast 1 distinct callsign, including N155MB.