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sensors Mode-S transponder

AC899C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N907EL · CESSNA 172 Skyhawk

Hex
AC899C
Octal
53104634
Decimal
11,307,420
Country
US
Tail
N907EL
Type
C172
No current signal · last broadcast 1d ago
Flights observed
251
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC899C.

Country allocation

The ICAO 24-bit address AC899C 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
BPX282 - 251 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 BPX282 - Jul 12, 23:35 UTCJul 13, 00:25 UTC50m
2026-07-12 BPX282 - Jul 12, 15:35 UTCJul 12, 16:45 UTC1h 10m
2026-07-12 BPX282 - Jul 12, 14:30 UTCJul 12, 14:40 UTC10m
2026-07-12 BPX282 - Jul 12, 13:25 UTCJul 12, 13:45 UTC20m
2026-07-11 BPX282 - Jul 11, 13:55 UTCJul 11, 14:55 UTC1h 0m
2026-07-11 BPX282 - Jul 11, 11:25 UTCJul 11, 12:45 UTC1h 20m
2026-07-10 BPX282 - Jul 10, 20:55 UTCJul 10, 22:00 UTC1h 5m
2026-07-10 BPX282 - Jul 10, 15:35 UTCJul 10, 16:15 UTC40m
2026-07-10 BPX282 - Jul 10, 11:30 UTCJul 10, 12:50 UTC1h 20m
2026-07-10 BPX282 - Jul 10, 02:30 UTCJul 10, 04:30 UTC2h 0m
2026-07-09 BPX282 - Jul 9, 15:35 UTCJul 9, 16:40 UTC1h 5m
2026-07-09 BPX282 - Jul 9, 13:35 UTCJul 9, 14:55 UTC1h 20m
2026-07-09 BPX282 - Jul 9, 11:40 UTCJul 9, 12:55 UTC1h 15m
2026-07-09 BPX282 - Jul 9, 02:05 UTCJul 9, 03:30 UTC1h 25m
2026-07-08 BPX282 - Jul 8, 21:30 UTCJul 8, 22:45 UTC1h 15m
2026-07-08 BPX282 - Jul 8, 17:45 UTCJul 8, 18:40 UTC55m
2026-07-08 BPX282 - Jul 8, 16:30 UTCJul 8, 16:55 UTC25m
2026-07-08 BPX282 - Jul 8, 15:30 UTCJul 8, 15:45 UTC15m
2026-07-08 BPX282 - Jul 8, 13:50 UTCJul 8, 14:40 UTC50m
2026-07-08 BPX282 - Jul 8, 11:35 UTCJul 8, 12:35 UTC1h 0m
2026-07-08 BPX282 - Jul 8, 02:10 UTCJul 8, 02:55 UTC45m
2026-07-07 BPX282 - Jul 7, 23:40 UTCJul 8, 00:55 UTC1h 15m
2026-07-07 BPX282 - Jul 7, 21:40 UTCJul 7, 22:50 UTC1h 10m
2026-07-07 BPX282 - Jul 7, 19:35 UTCJul 7, 20:40 UTC1h 5m
2026-07-07 BPX282 - Jul 7, 16:30 UTCJul 7, 16:40 UTC10m
2026-07-07 BPX282 - Jul 7, 15:15 UTCJul 7, 15:55 UTC40m
2026-07-07 BPX282 - Jul 7, 11:40 UTCJul 7, 11:55 UTC15m
2026-07-06 BPX282 - Jul 6, 17:00 UTCJul 6, 18:15 UTC1h 15m
2026-07-06 BPX282 - Jul 6, 11:40 UTCJul 6, 13:10 UTC1h 30m
2026-07-05 BPX282 - Jul 5, 21:40 UTCJul 5, 21:50 UTC10m
2026-07-05 BPX282 - Jul 5, 13:55 UTCJul 5, 17:40 UTC3h 45m
2026-07-02 BPX282 - Jul 2, 22:10 UTCJul 2, 23:15 UTC1h 5m
2026-07-02 BPX282 - Jul 2, 15:30 UTCJul 2, 16:50 UTC1h 20m
2026-07-02 BPX282 - Jul 2, 13:20 UTCJul 2, 14:35 UTC1h 15m
2026-07-02 BPX282 - Jul 2, 11:30 UTCJul 2, 12:30 UTC1h 0m
2026-07-01 BPX282 - Jul 1, 23:40 UTCJul 2, 00:45 UTC1h 5m
2026-07-01 BPX282 - Jul 1, 19:10 UTCJul 1, 20:00 UTC50m
2026-07-01 BPX282 - Jul 1, 17:30 UTCJul 1, 18:25 UTC55m
2026-07-01 BPX282 - Jul 1, 15:45 UTCJul 1, 16:50 UTC1h 5m
2026-07-01 BPX282 - Jul 1, 13:35 UTCJul 1, 14:55 UTC1h 20m
2026-07-01 BPX282 - Jul 1, 11:35 UTCJul 1, 11:45 UTC10m
2026-07-01 BPX282 - Jul 1, 05:05 UTCJul 1, 07:15 UTC2h 10m
2026-07-01 BPX282 - Jul 1, 02:00 UTCJul 1, 04:15 UTC2h 15m
2026-06-30 BPX282 - Jun 30, 23:50 UTCJul 1, 00:50 UTC1h 0m
2026-06-30 BPX282 - Jun 30, 21:40 UTCJun 30, 22:40 UTC1h 0m
2026-06-30 BPX282 - Jun 30, 19:50 UTCJun 30, 20:35 UTC45m
2026-06-30 BPX282 - Jun 30, 16:50 UTCJun 30, 18:25 UTC1h 35m
2026-06-30 BPX282 - Jun 30, 11:40 UTCJun 30, 13:25 UTC1h 45m
2026-06-29 BPX282 - Jun 29, 22:15 UTCJun 30, 00:25 UTC2h 10m
2026-06-29 BPX282 - Jun 29, 20:24 UTCJun 29, 21:09 UTC45m

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 N907EL page for operator, model, and routing details .

Mode-S AC899C frequently asked

What is Mode-S code AC899C?
AC899C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N907EL.
Where is Mode-S AC899C registered?
Mode-S code AC899C 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 AC899C 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 AC899C, octal 53104634, decimal 11,307,420.
What flights does AC899C operate?
Mode-S AC899C has broadcast 1 distinct callsign, including BPX282.