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 Jul 26, 21:30 UTC
Flights observed
470
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

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 Piedmont Airlines 8 2026-07-21
PDT6050 Piedmont Airlines 8 2026-07-26
PDT6011 - 7 2026-07-05
PDT6007 Piedmont Airlines 7 2026-07-25
PDT5814 Piedmont Airlines 7 2026-07-20
PDT5785 - 7 2026-07-19
PDT6034 - 6 2026-07-05
PDT5997 Piedmont Airlines 6 2026-07-24
PDT5982 Piedmont Airlines 6 2026-07-23
PDT5884 - 6 2026-06-27
PDT6126 - 5 2026-07-15
PDT6124 - 5 2026-07-01
PDT6073 - 5 2026-06-30
PDT6070 - 5 2026-07-11
PDT6068 - 5 2026-07-08
PDT6054 Piedmont Airlines 5 2026-07-25
PDT6024 Piedmont Airlines 5 2026-07-22
PDT5952 - 5 2026-07-14
PDT5931 Piedmont Airlines 5 2026-07-25
PDT5924 - 5 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT6065 BOS → ROC Jul 26, 21:20 UTCJul 26, 21:30 UTC10m
2026-07-26 PDT6065 BOS → ROC Jul 26, 19:20 UTCJul 26, 20:35 UTC1h 15m
2026-07-26 PDT5883 SBY → CLT Jul 26, 17:40 UTCJul 26, 18:20 UTC40m
2026-07-26 PDT5883 SBY → CLT Jul 26, 16:10 UTCJul 26, 16:30 UTC20m
2026-07-26 PDT6050 CLT → MDT Jul 26, 13:35 UTCJul 26, 14:30 UTC55m
2026-07-26 PDT6050 CLT → MDT Jul 26, 11:55 UTCJul 26, 12:35 UTC40m
2026-07-26 PDT6100 YUL → PHL Jul 26, 09:15 UTCJul 26, 10:25 UTC1h 10m
2026-07-26 PDT6109 PHL → ALB Jul 26, 00:05 UTCJul 26, 00:30 UTC25m
2026-07-25 PDT6082 PHL → CVG Jul 25, 21:25 UTCJul 25, 22:25 UTC1h 0m
2026-07-25 PDT6082 PHL → CVG Jul 25, 19:35 UTCJul 25, 20:20 UTC45m
2026-07-25 PDT6115 ISP → PHL Jul 25, 17:05 UTCJul 25, 18:15 UTC1h 10m
2026-07-25 PDT6115 ISP → PHL Jul 25, 17:01 UTCJul 25, 18:18 UTC1h 17m
2026-07-25 PDT5994 ORD → MDT Jul 25, 15:35 UTCJul 25, 16:00 UTC25m
2026-07-25 PDT6054 PHL → SBY Jul 25, 13:15 UTCJul 25, 14:05 UTC50m
2026-07-25 PDT6054 PHL → SBY Jul 25, 13:10 UTCJul 25, 14:03 UTC53m
2026-07-25 PDT6054 PHL → SBY Jul 25, 11:40 UTCJul 25, 12:10 UTC30m
2026-07-25 PDT6007 LEX → PHL Jul 25, 09:15 UTCJul 25, 10:00 UTC45m
2026-07-25 PDT6007 LEX → PHL Jul 25, 09:06 UTCJul 25, 10:00 UTC54m
2026-07-25 PDT5931 ROA → PHL Jul 25, 02:45 UTCJul 25, 03:20 UTC35m
2026-07-25 PDT6118 PHL → YQB Jul 25, 00:05 UTCJul 25, 01:35 UTC1h 30m
2026-07-24 PDT6118 PHL → YQB Jul 24, 21:55 UTCJul 24, 23:20 UTC1h 25m
2026-07-24 PDT5979 CLT → FAY Jul 24, 19:50 UTCJul 24, 20:40 UTC50m
2026-07-24 PDT5983 PHL → DTW Jul 24, 17:35 UTCJul 24, 18:40 UTC1h 5m
2026-07-24 PDT5983 PHL → DTW Jul 24, 17:34 UTCJul 24, 18:39 UTC1h 5m
2026-07-24 PDT5997 SCE → PHL Jul 24, 15:50 UTCJul 24, 16:40 UTC50m
2026-07-24 PDT5997 SCE → PHL Jul 24, 14:30 UTCJul 24, 15:05 UTC35m
2026-07-24 PDT6001 PHL → SYR Jul 24, 11:45 UTCJul 24, 12:45 UTC1h 0m
2026-07-24 PDT5966 GRR → PHL Jul 24, 03:15 UTCJul 24, 04:10 UTC55m
2026-07-24 PDT5862 MHT → PHL Jul 24, 01:15 UTCJul 24, 02:10 UTC55m
2026-07-24 PDT5862 MHT → PHL Jul 24, 01:12 UTCJul 24, 02:07 UTC55m
2026-07-23 PDT5862 MHT → PHL Jul 23, 23:15 UTCJul 24, 00:20 UTC1h 5m
2026-07-23 PDT6132 PHL → SYR Jul 23, 20:05 UTCJul 23, 21:25 UTC1h 20m
2026-07-23 PDT6132 PHL → SYR Jul 23, 20:04 UTCJul 23, 21:18 UTC1h 14m
2026-07-23 PDT6132 PHL → SYR Jul 23, 17:30 UTCJul 23, 19:15 UTC1h 45m
2026-07-23 PDT5982 RIC → PHL Jul 23, 15:30 UTCJul 23, 16:10 UTC40m
2026-07-23 PDT5982 RIC → PHL Jul 23, 13:55 UTCJul 23, 14:30 UTC35m
2026-07-23 PDT5973 CAE → PHL Jul 23, 12:05 UTCJul 23, 12:40 UTC35m
2026-07-23 PDT5964 MHT → PHL Jul 23, 01:20 UTCJul 23, 01:55 UTC35m
2026-07-23 PDT5964 MHT → PHL Jul 23, 01:15 UTCJul 23, 01:55 UTC40m
2026-07-22 PDT6024 BOS → ROC Jul 22, 23:40 UTCJul 23, 00:25 UTC45m
2026-07-22 PDT6024 BOS → ROC Jul 22, 23:37 UTCJul 23, 00:25 UTC48m
2026-07-22 PDT6024 BOS → ROC Jul 22, 22:10 UTCJul 22, 22:55 UTC45m
2026-07-22 PDT6041 CLT → LEX Jul 22, 18:55 UTCJul 22, 19:50 UTC55m
2026-07-22 PDT6041 CLT → LEX Jul 22, 17:05 UTCJul 22, 17:55 UTC50m
2026-07-22 PDT5982 - Jul 22, 15:05 UTCJul 22, 15:50 UTC45m
2026-07-22 PDT5982 - Jul 22, 13:30 UTCJul 22, 14:10 UTC40m
2026-07-22 PDT5958 - Jul 22, 11:25 UTCJul 22, 11:35 UTC10m
2026-07-21 PDT9654 BHM → PHL Jul 21, 19:05 UTCJul 21, 19:35 UTC30m
2026-07-21 PDT6120 PHL → YQB Jul 21, 17:00 UTCJul 21, 18:10 UTC1h 10m
2026-07-21 PDT6117 LNS → PHL Jul 21, 14:20 UTCJul 21, 14:40 UTC20m

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 Jul 26, 21:30 UTC.
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, PDT6050, PDT6011, PDT6007, PDT5814.