Apparatus

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sensors Mode-S transponder

AC76B6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N902BC · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
AC76B6
Octal
53073266
Decimal
11,302,582
Country
US
Tail
N902BC
Type
E145
No current signal · last broadcast 5h ago
Flights observed
347
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S AC76B6.

Country allocation

The ICAO 24-bit address AC76B6 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 20 distinct

Callsign Airline Flights Last seen
PDT6074 - 7 2026-07-09
PDT6011 - 7 2026-07-05
PDT6034 - 6 2026-07-05
PDT5884 - 6 2026-06-27
PDT6124 - 5 2026-07-01
PDT6073 - 5 2026-06-30
PDT6070 - 5 2026-07-11
PDT6068 - 5 2026-07-08
PDT5924 - 5 2026-07-02
PDT6123 Piedmont Airlines 4 2026-07-02
PDT6071 - 4 2026-07-06
PDT6050 - 4 2026-07-10
PDT6025 - 4 2026-07-01
PDT6023 - 4 2026-07-01
PDT6007 Piedmont Airlines 4 2026-06-14
PDT5997 - 4 2026-07-03
PDT5992 - 4 2026-06-30
PDT5955 Piedmont Airlines 4 2026-04-14
PDT5939 - 4 2026-07-12
PDT5912 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 PDT6027 - Jul 13, 23:45 UTCJul 14, 01:00 UTC1h 15m
2026-07-13 PDT6027 PHL → YUL Jul 13, 23:45 UTCJul 14, 00:56 UTC1h 11m
2026-07-13 PDT5928 ROA → PHL Jul 13, 12:35 UTCJul 13, 13:30 UTC55m
2026-07-13 PDT5928 ROA → PHL Jul 13, 12:33 UTCJul 13, 13:29 UTC56m
2026-07-13 PDT5882 - Jul 13, 01:35 UTCJul 13, 02:05 UTC30m
2026-07-12 PDT5939 - Jul 12, 23:05 UTCJul 12, 23:35 UTC30m
2026-07-12 PDT5939 - Jul 12, 21:40 UTCJul 12, 22:05 UTC25m
2026-07-12 PDT5853 - Jul 12, 17:40 UTCJul 12, 18:15 UTC35m
2026-07-12 PDT5853 OAJ → CLT Jul 12, 17:34 UTCJul 12, 18:19 UTC45m
2026-07-12 PDT5853 - Jul 12, 16:05 UTCJul 12, 16:35 UTC30m
2026-07-12 PDT5975 - Jul 12, 13:30 UTCJul 12, 14:05 UTC35m
2026-07-12 PDT5827 - Jul 12, 01:20 UTCJul 12, 01:50 UTC30m
2026-07-12 PDT5827 CLT → LYH Jul 12, 01:16 UTCJul 12, 01:50 UTC34m
2026-07-11 PDT6070 - Jul 11, 22:20 UTCJul 11, 23:00 UTC40m
2026-07-11 PDT6070 - Jul 11, 20:30 UTCJul 11, 21:00 UTC30m
2026-07-11 PDT5819 - Jul 11, 18:20 UTCJul 11, 18:50 UTC30m
2026-07-11 PDT5819 - Jul 11, 15:45 UTCJul 11, 16:15 UTC30m
2026-07-11 PDT6033 - Jul 11, 13:00 UTCJul 11, 13:30 UTC30m
2026-07-11 PDT6033 AVL → CLT Jul 11, 12:58 UTCJul 11, 13:27 UTC29m
2026-07-11 PDT6033 - Jul 11, 11:35 UTCJul 11, 11:55 UTC20m
2026-07-11 PDT5984 - Jul 11, 09:10 UTCJul 11, 09:35 UTC25m
2026-07-11 PDT5912 - Jul 11, 01:55 UTCJul 11, 02:20 UTC25m
2026-07-10 PDT6116 - Jul 10, 23:35 UTCJul 11, 00:20 UTC45m
2026-07-10 PDT6116 - Jul 10, 21:05 UTCJul 10, 21:55 UTC50m
2026-07-10 PDT5785 - Jul 10, 17:55 UTCJul 10, 19:00 UTC1h 5m
2026-07-10 PDT5785 - Jul 10, 16:00 UTCJul 10, 16:55 UTC55m
2026-07-10 PDT6050 - Jul 10, 13:20 UTCJul 10, 14:05 UTC45m
2026-07-10 PDT6050 - Jul 10, 11:50 UTCJul 10, 12:35 UTC45m
2026-07-10 PDT5954 - Jul 10, 09:05 UTCJul 10, 09:35 UTC30m
2026-07-10 PDT5909 - Jul 10, 01:40 UTCJul 10, 02:10 UTC30m
2026-07-09 PDT6074 - Jul 9, 23:55 UTCJul 10, 00:25 UTC30m
2026-07-09 PDT6074 - Jul 9, 22:45 UTCJul 9, 23:10 UTC25m
2026-07-09 PDT5979 - Jul 9, 20:45 UTCJul 9, 21:15 UTC30m
2026-07-09 PDT5900 - Jul 9, 17:50 UTCJul 9, 18:25 UTC35m
2026-07-09 PDT5869 - Jul 9, 15:30 UTCJul 9, 16:25 UTC55m
2026-07-09 PDT5869 - Jul 9, 13:50 UTCJul 9, 14:40 UTC50m
2026-07-09 PDT6009 - Jul 9, 10:40 UTCJul 9, 11:20 UTC40m
2026-07-09 PDT6009 OAJ → CLT Jul 9, 10:39 UTCJul 9, 11:16 UTC37m
2026-07-09 PDT5812 - Jul 9, 01:50 UTCJul 9, 02:20 UTC30m
2026-07-08 PDT5902 - Jul 8, 22:55 UTCJul 8, 23:55 UTC1h 0m
2026-07-08 PDT5902 TLH → CLT Jul 8, 22:53 UTCJul 8, 23:48 UTC55m
2026-07-08 PDT5902 - Jul 8, 21:05 UTCJul 8, 22:15 UTC1h 10m
2026-07-08 PDT5789 - Jul 8, 19:05 UTCJul 8, 19:25 UTC20m
2026-07-08 PDT5789 GSO → CLT Jul 8, 18:59 UTCJul 8, 19:25 UTC26m
2026-07-08 PDT5789 - Jul 8, 17:20 UTCJul 8, 17:35 UTC15m
2026-07-08 PDT6068 - Jul 8, 15:20 UTCJul 8, 16:00 UTC40m
2026-07-08 PDT6068 EWN → CLT Jul 8, 15:12 UTCJul 8, 16:00 UTC48m
2026-07-08 PDT6068 - Jul 8, 13:30 UTCJul 8, 14:00 UTC30m
2026-07-08 PDT5981 - Jul 8, 10:55 UTCJul 8, 11:20 UTC25m
2026-07-08 PDT5896 - Jul 8, 03:25 UTCJul 8, 03:55 UTC30m

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 N902BC page for operator, model, and routing details .

Mode-S AC76B6 frequently asked

What is Mode-S code AC76B6?
AC76B6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N902BC.
Where is Mode-S AC76B6 registered?
Mode-S code AC76B6 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 AC76B6 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC76B6, octal 53073266, decimal 11,302,582.
What flights does AC76B6 operate?
Mode-S AC76B6 has broadcast 20 distinct callsigns, including PDT6074, PDT6011, PDT6034, PDT5884, PDT6124.