Apparatus

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sensors Mode-S transponder

A477BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N38700 · PIPER PA-28-140/150/160/180 · operated by UNIVERSAL AVIATORS ACADEMY INC

Hex
A477BC
Octal
51073674
Decimal
10,778,556
Country
US
Tail
N38700
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
194
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A477BC.

Country allocation

The ICAO 24-bit address A477BC 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
N38700 - 194 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N38700 EMT → EMT Jul 26, 18:10 UTCJul 26, 19:20 UTC1h 10m
2026-07-26 N38700 - Jul 26, 16:15 UTCJul 26, 17:00 UTC45m
2026-07-25 N38700 EMT → EMT Jul 25, 19:45 UTCJul 25, 21:15 UTC1h 30m
2026-07-25 N38700 - Jul 25, 17:50 UTCJul 25, 19:05 UTC1h 15m
2026-07-25 N38700 - Jul 25, 15:55 UTCJul 25, 16:45 UTC50m
2026-07-25 N38700 SBP → EMT Jul 25, 03:35 UTCJul 25, 05:20 UTC1h 45m
2026-07-25 N38700 - Jul 25, 00:10 UTCJul 25, 01:35 UTC1h 25m
2026-07-23 N38700 - Jul 23, 18:45 UTCJul 23, 19:25 UTC40m
2026-07-23 N38700 - Jul 23, 17:35 UTCJul 23, 18:10 UTC35m
2026-07-22 N38700 EMT → EMT Jul 22, 15:25 UTCJul 22, 15:50 UTC25m
2026-07-21 N38700 - Jul 21, 17:40 UTCJul 21, 18:45 UTC1h 5m
2026-07-21 N38700 - Jul 21, 00:15 UTCJul 21, 01:00 UTC45m
2026-07-20 N38700 SBD → EMT Jul 20, 21:20 UTCJul 20, 21:45 UTC25m
2026-07-20 N38700 SBD → SBD Jul 20, 18:30 UTCJul 20, 20:00 UTC1h 30m
2026-07-20 N38700 - Jul 20, 14:05 UTCJul 20, 14:30 UTC25m
2026-07-19 N38700 - Jul 19, 18:30 UTCJul 19, 20:40 UTC2h 10m
2026-07-18 N38700 - Jul 18, 22:35 UTCJul 18, 23:35 UTC1h 0m
2026-07-18 N38700 - Jul 18, 19:15 UTCJul 18, 21:20 UTC2h 5m
2026-07-18 N38700 - Jul 18, 18:20 UTCJul 18, 19:00 UTC40m
2026-07-16 N38700 - Jul 16, 17:30 UTCJul 16, 19:25 UTC1h 55m
2026-07-15 N38700 EMT → EMT Jul 15, 20:00 UTCJul 15, 20:45 UTC45m
2026-07-15 N38700 EMT → EMT Jul 15, 15:55 UTCJul 15, 16:35 UTC40m
2026-07-14 N38700 - Jul 14, 20:55 UTCJul 14, 23:50 UTC2h 54m
2026-07-14 N38700 - Jul 14, 19:35 UTCJul 14, 20:25 UTC50m
2026-07-13 N38700 - Jul 13, 17:55 UTCJul 13, 18:45 UTC50m
2026-07-12 N38700 - Jul 12, 18:05 UTCJul 12, 18:50 UTC45m
2026-07-12 N38700 EMT → EMT Jul 12, 01:30 UTCJul 12, 02:40 UTC1h 10m
2026-07-11 N38700 EMT → EMT Jul 11, 02:20 UTCJul 11, 02:55 UTC35m
2026-07-10 N38700 EMT → EMT Jul 10, 19:50 UTCJul 10, 20:20 UTC30m
2026-07-09 N38700 EMT → EMT Jul 9, 17:30 UTCJul 9, 18:50 UTC1h 20m
2026-07-09 N38700 - Jul 9, 01:40 UTCJul 9, 02:20 UTC40m
2026-07-07 N38700 - Jul 7, 21:55 UTCJul 7, 22:50 UTC55m
2026-07-06 N38700 - Jul 6, 22:00 UTCJul 7, 00:20 UTC2h 20m
2026-07-05 N38700 - Jul 5, 19:55 UTCJul 5, 20:30 UTC35m
2026-07-05 N38700 EMT → EMT Jul 5, 00:15 UTCJul 5, 00:50 UTC35m
2026-07-03 N38700 EMT → EMT Jul 3, 23:40 UTCJul 4, 00:05 UTC25m
2026-07-03 N38700 - Jul 3, 22:10 UTCJul 3, 23:05 UTC55m
2026-07-03 N38700 - Jul 3, 19:50 UTCJul 3, 21:00 UTC1h 10m
2026-07-03 N38700 EMT → EMT Jul 3, 17:25 UTCJul 3, 18:45 UTC1h 20m
2026-07-03 N38700 EMT → EMT Jul 3, 00:20 UTCJul 3, 02:40 UTC2h 20m
2026-07-02 N38700 HMT → EMT Jul 2, 21:00 UTCJul 2, 22:05 UTC1h 5m
2026-07-02 N38700 - Jul 2, 19:45 UTCJul 2, 20:55 UTC1h 10m
2026-06-30 N38700 - Jun 30, 19:45 UTCJun 30, 20:30 UTC45m
2026-06-30 N38700 SBD → EMT Jun 30, 18:25 UTCJun 30, 18:55 UTC30m
2026-06-30 N38700 - Jun 30, 14:55 UTCJun 30, 15:25 UTC30m
2026-06-30 N38700 - Jun 30, 00:45 UTCJun 30, 01:30 UTC46m
2026-06-29 N38700 - Jun 29, 19:29 UTCJun 29, 21:09 UTC1h 40m
2026-06-29 N38700 - Jun 29, 18:49 UTCJun 29, 19:20 UTC30m
2026-06-28 N38700 - Jun 28, 23:44 UTCJun 29, 00:39 UTC55m
2026-06-27 N38700 - Jun 27, 21:55 UTCJun 27, 22:45 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 N38700 page for operator, model, and routing details .

Mode-S A477BC frequently asked

What is Mode-S code A477BC?
A477BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N38700.
Where is Mode-S A477BC registered?
Mode-S code A477BC 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 A477BC broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A477BC, octal 51073674, decimal 10,778,556.
What flights does A477BC operate?
Mode-S A477BC has broadcast 1 distinct callsign, including N38700.