Apparatus

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sensors Mode-S transponder

A29C5C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2677S · BELLANCA 17 Viking · operated by T&D JANITORIAL SERVICES LLC

Hex
A29C5C
Octal
50516134
Decimal
10,656,860
Country
US
Tail
N2677S
Type
BL17
No current signal · last broadcast 1h ago
Flights observed
22
Distinct callsigns
1
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A29C5C.

Country allocation

The ICAO 24-bit address A29C5C 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
N2677S - 22 2026-07-14

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-07-14 N2677S - Jul 14, 17:40 UTCJul 14, 19:00 UTC1h 20m
2026-07-13 N2677S - Jul 13, 19:05 UTCJul 13, 19:25 UTC20m
2026-07-13 N2677S - Jul 13, 17:30 UTCJul 13, 18:10 UTC40m
2026-07-13 N2677S - Jul 13, 16:35 UTCJul 13, 16:55 UTC20m
2026-07-13 N2677S - Jul 13, 13:45 UTCJul 13, 16:00 UTC2h 15m
2026-06-27 N2677S - Jun 27, 20:29 UTCJun 27, 23:34 UTC3h 5m
2026-06-25 N2677S - Jun 25, 14:50 UTCJun 25, 17:05 UTC2h 15m
2026-06-15 N2677S - Jun 15, 20:25 UTCJun 15, 20:40 UTC15m
2026-06-15 N2677S - Jun 15, 19:20 UTCJun 15, 19:30 UTC10m
2026-06-02 N2677S - Jun 2, 21:30 UTCJun 2, 21:50 UTC20m
2026-06-02 N2677S - Jun 2, 16:45 UTCJun 2, 20:15 UTC3h 30m
2026-06-01 N2677S - Jun 1, 16:35 UTCJun 1, 18:50 UTC2h 15m
2026-06-01 N2677S - Jun 1, 13:50 UTCJun 1, 16:05 UTC2h 15m
2026-05-31 N2677S - May 31, 19:15 UTCMay 31, 19:35 UTC20m
2026-05-16 N2677S - May 16, 18:20 UTCMay 16, 21:00 UTC2h 40m
2026-05-16 N2677S - May 16, 13:21 UTCMay 16, 16:40 UTC3h 20m
2026-05-10 N2677S - May 10, 23:19 UTCMay 11, 00:49 UTC1h 30m
2026-05-10 N2677S - May 10, 22:05 UTCMay 10, 22:45 UTC40m
2026-05-10 N2677S - May 10, 21:14 UTCMay 10, 21:30 UTC15m
2026-05-10 N2677S - May 10, 16:20 UTCMay 10, 16:55 UTC35m
2026-05-10 N2677S - May 10, 14:30 UTCMay 10, 15:45 UTC1h 15m
2026-05-08 N2677S - May 8, 12:34 UTCMay 8, 13:00 UTC25m

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 N2677S page for operator, model, and routing details .

Mode-S A29C5C frequently asked

What is Mode-S code A29C5C?
A29C5C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2677S.
Where is Mode-S A29C5C registered?
Mode-S code A29C5C 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 A29C5C broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A29C5C, octal 50516134, decimal 10,656,860.
What flights does A29C5C operate?
Mode-S A29C5C has broadcast 1 distinct callsign, including N2677S.