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sensors Mode-S transponder

AC90A0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N909AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
AC90A0
Octal
53110240
Decimal
11,309,216
Country
US
Tail
N909AE
Type
E145
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
724
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S AC90A0.

Country allocation

The ICAO 24-bit address AC90A0 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
PDT6062 - 12 2026-06-17
PDT6018 - 12 2026-07-13
PDT6125 - 9 2026-07-15
PDT5803 - 9 2026-07-02
PDT6132 - 8 2026-07-18
PDT6124 - 8 2026-06-22
PDT6046 Piedmont Airlines 8 2026-07-21
PDT5805 - 8 2026-07-16
PDT6128 Piedmont Airlines 7 2026-06-17
PDT6053 Piedmont Airlines 7 2026-07-22
PDT5965 Piedmont Airlines 7 2026-06-12
PDT5952 Piedmont Airlines 7 2026-07-24
PDT5856 Piedmont Airlines 7 2026-07-21
PDT5804 - 7 2026-06-18
PDT6108 - 6 2026-06-28
PDT6067 - 6 2026-07-19
PDT6054 - 6 2026-07-19
PDT6038 - 6 2026-07-14
PDT5976 Piedmont Airlines 6 2026-07-25
PDT5940 - 6 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT6118 PHL → YQB Jul 26, 21:20 UTCJul 26, 22:00 UTC40m
2026-07-26 PDT5826 PHL → MSN Jul 26, 19:10 UTCJul 26, 19:45 UTC35m
2026-07-26 PDT5826 PHL → MSN Jul 26, 17:55 UTCJul 26, 18:25 UTC30m
2026-07-26 PDT6099 CVG → CLT Jul 26, 15:30 UTCJul 26, 15:50 UTC20m
2026-07-26 PDT6099 CVG → CLT Jul 26, 15:25 UTCJul 26, 15:49 UTC24m
2026-07-26 PDT5800 PHL → RIC Jul 26, 12:59 UTCJul 26, 14:24 UTC1h 25m
2026-07-26 PDT5800 PHL → RIC Jul 26, 13:00 UTCJul 26, 14:25 UTC1h 25m
2026-07-25 PDT5884 YYZ → PHL Jul 25, 20:40 UTCJul 25, 21:45 UTC1h 5m
2026-07-25 PDT5884 YYZ → PHL Jul 25, 18:10 UTCJul 25, 19:15 UTC1h 5m
2026-07-25 PDT5976 CLT → GNV Jul 25, 14:45 UTCJul 25, 15:45 UTC1h 0m
2026-07-25 PDT5976 CLT → GNV Jul 25, 13:00 UTCJul 25, 13:50 UTC50m
2026-07-24 PDT5952 BDL → PHL Jul 24, 22:55 UTCJul 25, 00:15 UTC1h 20m
2026-07-24 PDT5952 BDL → PHL Jul 24, 20:25 UTCJul 24, 21:55 UTC1h 30m
2026-07-24 PDT5978 DTW → PHL Jul 24, 17:20 UTCJul 24, 18:30 UTC1h 10m
2026-07-24 PDT5822 ROC → BOS Jul 24, 15:40 UTCJul 24, 16:10 UTC30m
2026-07-24 PDT5947 SDF → PHL Jul 24, 13:35 UTCJul 24, 14:20 UTC45m
2026-07-24 PDT5947 SDF → PHL Jul 24, 11:50 UTCJul 24, 12:25 UTC35m
2026-07-24 PDT5855 ORD → MDT Jul 24, 09:20 UTCJul 24, 09:40 UTC20m
2026-07-24 PDT5815 ORD → DAY Jul 24, 03:50 UTCJul 24, 04:15 UTC25m
2026-07-23 PDT6116 PHL → YYZ Jul 23, 23:45 UTCJul 24, 00:35 UTC50m
2026-07-23 PDT6116 PHL → YYZ Jul 23, 21:35 UTCJul 23, 22:05 UTC30m
2026-07-23 PDT6064 CLT → CAE Jul 23, 18:35 UTCJul 23, 19:45 UTC1h 10m
2026-07-23 PDT6064 CLT → CAE Jul 23, 18:25 UTCJul 23, 19:43 UTC1h 18m
2026-07-23 PDT6064 CLT → CAE Jul 23, 16:15 UTCJul 23, 17:20 UTC1h 5m
2026-07-23 PDT5972 - Jul 23, 12:25 UTCJul 23, 13:45 UTC1h 20m
2026-07-23 PDT5972 MOB → CLT Jul 23, 12:21 UTCJul 23, 13:42 UTC1h 21m
2026-07-23 PDT5970 ALB → PHL Jul 23, 01:35 UTCJul 23, 02:45 UTC1h 10m
2026-07-22 PDT5807 CLT → MGM Jul 22, 21:50 UTCJul 22, 22:45 UTC55m
2026-07-22 PDT5807 CLT → MGM Jul 22, 20:05 UTCJul 22, 21:00 UTC55m
2026-07-22 PDT6053 CAE → CLT Jul 22, 17:40 UTCJul 22, 18:20 UTC40m
2026-07-22 PDT6053 CAE → CLT Jul 22, 16:00 UTCJul 22, 16:40 UTC40m
2026-07-22 PDT5878 BHM → ORD Jul 22, 13:30 UTCJul 22, 14:10 UTC40m
2026-07-22 PDT5878 BHM → ORD Jul 22, 11:55 UTCJul 22, 12:20 UTC25m
2026-07-22 PDT6085 ART → PHL Jul 22, 03:40 UTCJul 22, 04:25 UTC45m
2026-07-22 PDT6102 PHL → GSO Jul 22, 01:20 UTCJul 22, 02:25 UTC1h 5m
2026-07-21 PDT6102 PHL → GSO Jul 21, 23:25 UTCJul 22, 00:25 UTC1h 0m
2026-07-21 PDT6046 MHT → PHL Jul 21, 20:25 UTCJul 21, 20:45 UTC20m
2026-07-21 PDT6046 MHT → PHL Jul 21, 20:20 UTCJul 21, 20:45 UTC25m
2026-07-21 PDT6046 MHT → PHL Jul 21, 19:05 UTCJul 21, 19:25 UTC20m
2026-07-21 PDT5824 BGR → PHL Jul 21, 16:20 UTCJul 21, 17:35 UTC1h 15m
2026-07-21 PDT5824 BGR → PHL Jul 21, 13:45 UTCJul 21, 14:50 UTC1h 5m
2026-07-21 PDT5856 GSO → PHL Jul 21, 10:45 UTCJul 21, 11:15 UTC30m
2026-07-21 PDT5874 BOS → SYR Jul 21, 02:00 UTCJul 21, 02:25 UTC25m
2026-07-21 PDT6055 - Jul 21, 00:10 UTCJul 21, 00:50 UTC40m
2026-07-21 PDT6055 CHO → CLT Jul 21, 00:02 UTCJul 21, 00:47 UTC45m
2026-07-20 PDT6055 - Jul 20, 22:25 UTCJul 20, 23:10 UTC45m
2026-07-20 PDT5932 - Jul 20, 19:40 UTCJul 20, 20:50 UTC1h 10m
2026-07-20 PDT5932 TLH → CLT Jul 20, 19:38 UTCJul 20, 20:51 UTC1h 13m
2026-07-20 PDT5932 - Jul 20, 17:40 UTCJul 20, 18:45 UTC1h 5m
2026-07-20 PDT5946 ILM → PHL Jul 20, 15:15 UTCJul 20, 15:40 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 N909AE page for operator, model, and routing details .

Mode-S AC90A0 frequently asked

What is Mode-S code AC90A0?
AC90A0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N909AE.
Where is Mode-S AC90A0 registered?
Mode-S code AC90A0 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 AC90A0 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC90A0, octal 53110240, decimal 11,309,216.
What flights does AC90A0 operate?
Mode-S AC90A0 has broadcast 20 distinct callsigns, including PDT6062, PDT6018, PDT6125, PDT5803, PDT6132.