Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A920F4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N688AE · EMBRAER ERJ-145 · operated by AMERICAN AIRLINES INC

Hex
A920F4
Octal
52220364
Decimal
11,084,020
Country
US
Tail
N688AE
Type
E145
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
853
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S A920F4.

Country allocation

The ICAO 24-bit address A920F4 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
PDT5902 - 12 2026-07-06
PDT5978 Piedmont Airlines 11 2026-06-08
PDT6016 - 10 2026-06-29
PDT6038 - 9 2026-07-15
PDT6011 Piedmont Airlines 9 2026-07-22
PDT5801 Piedmont Airlines 9 2026-07-22
PDT5973 - 8 2026-07-17
PDT5927 - 8 2026-07-06
PDT5831 Piedmont Airlines 8 2026-06-04
PDT6132 Piedmont Airlines 7 2026-06-11
PDT6123 - 7 2026-07-17
PDT6114 Piedmont Airlines 7 2026-05-08
PDT6005 Piedmont Airlines 7 2026-04-29
PDT5997 Piedmont Airlines 7 2026-07-25
PDT5887 - 7 2026-06-17
PDT5847 - 7 2026-07-18
PDT5790 Piedmont Airlines 7 2026-06-13
PDT5785 - 7 2026-07-02
PDT6122 Piedmont Airlines 6 2026-07-26
PDT6052 - 6 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PDT6034 PHL → BUF Jul 26, 20:35 UTCJul 26, 22:00 UTC1h 25m
2026-07-26 PDT5963 PHL → ILM Jul 26, 18:30 UTCJul 26, 19:00 UTC30m
2026-07-26 PDT5963 PHL → ILM Jul 26, 17:00 UTCJul 26, 17:30 UTC30m
2026-07-26 PDT6122 ILM → PHL Jul 26, 15:15 UTCJul 26, 15:55 UTC40m
2026-07-26 PDT6122 ILM → PHL Jul 26, 13:45 UTCJul 26, 14:25 UTC40m
2026-07-26 PDT5904 CLT → FAY Jul 26, 11:10 UTCJul 26, 11:55 UTC45m
2026-07-26 PDT6090 ART → PHL Jul 26, 02:25 UTCJul 26, 03:10 UTC45m
2026-07-25 PDT6125 PHL → CVG Jul 25, 23:15 UTCJul 26, 00:30 UTC1h 15m
2026-07-25 PDT6125 PHL → CVG Jul 25, 21:30 UTCJul 25, 22:30 UTC1h 0m
2026-07-25 PDT5840 RIC → PHL Jul 25, 19:10 UTCJul 25, 20:15 UTC1h 5m
2026-07-25 PDT5840 RIC → PHL Jul 25, 17:05 UTCJul 25, 17:55 UTC50m
2026-07-25 PDT5997 SCE → PHL Jul 25, 14:55 UTCJul 25, 15:40 UTC45m
2026-07-25 PDT5997 SCE → PHL Jul 25, 14:51 UTCJul 25, 15:43 UTC52m
2026-07-25 PDT5997 SCE → PHL Jul 25, 13:25 UTCJul 25, 14:00 UTC35m
2026-07-25 PDT6111 GSP → PHL Jul 25, 10:25 UTCJul 25, 11:05 UTC40m
2026-07-25 PDT6107 PHL → ALB Jul 25, 00:00 UTCJul 25, 00:40 UTC40m
2026-07-24 PDT6082 PHL → CVG Jul 24, 21:30 UTCJul 24, 22:30 UTC1h 0m
2026-07-24 PDT6082 PHL → CVG Jul 24, 19:35 UTCJul 24, 20:20 UTC45m
2026-07-24 PDT5915 - Jul 24, 16:35 UTCJul 24, 18:00 UTC1h 25m
2026-07-24 PDT5915 - Jul 24, 14:20 UTCJul 24, 15:55 UTC1h 35m
2026-07-24 PDT5830 RIC → PHL Jul 24, 12:10 UTCJul 24, 12:45 UTC35m
2026-07-24 PDT5969 GSO → PHL Jul 24, 01:15 UTCJul 24, 01:55 UTC40m
2026-07-23 PDT5918 TVC → ORD Jul 23, 23:20 UTCJul 23, 23:50 UTC30m
2026-07-23 PDT5918 TVC → ORD Jul 23, 22:05 UTCJul 23, 22:30 UTC25m
2026-07-23 PDT5859 PHL → BGR Jul 23, 20:10 UTCJul 23, 20:45 UTC35m
2026-07-23 PDT5859 PHL → BGR Jul 23, 18:35 UTCJul 23, 19:15 UTC40m
2026-07-23 PDT6121 HSV → CLT Jul 23, 16:45 UTCJul 23, 17:20 UTC35m
2026-07-23 PDT6121 HSV → CLT Jul 23, 15:20 UTCJul 23, 16:00 UTC40m
2026-07-23 PDT6022 ROC → BOS Jul 23, 10:15 UTCJul 23, 11:05 UTC50m
2026-07-23 PDT6022 ROC → BOS Jul 23, 10:10 UTCJul 23, 11:02 UTC52m
2026-07-23 PDT6020 CVG → PHL Jul 23, 03:30 UTCJul 23, 03:40 UTC10m
2026-07-23 PDT6020 CVG → PHL Jul 23, 01:40 UTCJul 23, 02:20 UTC40m
2026-07-22 PDT5801 ORD → AZO Jul 22, 23:05 UTCJul 23, 00:35 UTC1h 30m
2026-07-22 PDT5801 ORD → AZO Jul 22, 23:01 UTCJul 23, 00:35 UTC1h 34m
2026-07-22 PDT5801 ORD → AZO Jul 22, 20:35 UTCJul 22, 22:05 UTC1h 30m
2026-07-22 PDT6011 YUL → PHL Jul 22, 17:35 UTCJul 22, 18:45 UTC1h 10m
2026-07-22 PDT6011 YUL → PHL Jul 22, 15:25 UTCJul 22, 16:30 UTC1h 5m
2026-07-22 PDT6001 PHL → SYR Jul 22, 13:10 UTCJul 22, 14:15 UTC1h 5m
2026-07-21 PDT5840 RIC → PHL Jul 21, 17:45 UTCJul 21, 18:50 UTC1h 5m
2026-07-21 PDT5908 MHT → PHL Jul 21, 14:45 UTCJul 21, 16:00 UTC1h 15m
2026-07-21 PDT5799 BOS → ROC Jul 21, 13:20 UTCJul 21, 13:35 UTC15m
2026-07-21 PDT5799 BOS → ROC Jul 21, 13:18 UTCJul 21, 13:50 UTC32m
2026-07-21 PDT5808 EVV → CLT Jul 21, 10:35 UTCJul 21, 11:35 UTC1h 0m
2026-07-21 PDT5818 CLT → EVV Jul 21, 01:15 UTCJul 21, 02:10 UTC55m
2026-07-20 PDT6045 - Jul 20, 22:20 UTCJul 20, 22:45 UTC25m
2026-07-20 PDT6044 BOS → MDT Jul 20, 20:05 UTCJul 20, 21:15 UTC1h 10m
2026-07-20 PDT6011 YUL → PHL Jul 20, 17:20 UTCJul 20, 18:35 UTC1h 15m
2026-07-20 PDT6011 YUL → PHL Jul 20, 17:16 UTCJul 20, 18:23 UTC1h 7m
2026-07-20 PDT6011 YUL → PHL Jul 20, 15:05 UTCJul 20, 16:10 UTC1h 5m
2026-07-20 PDT5901 - Jul 20, 12:10 UTCJul 20, 13:00 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 N688AE page for operator, model, and routing details .

Mode-S A920F4 frequently asked

What is Mode-S code A920F4?
A920F4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N688AE.
Where is Mode-S A920F4 registered?
Mode-S code A920F4 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 A920F4 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 A920F4, octal 52220364, decimal 11,084,020.
What flights does A920F4 operate?
Mode-S A920F4 has broadcast 20 distinct callsigns, including PDT5902, PDT5978, PDT6016, PDT6038, PDT6011.