Apparatus

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sensors Mode-S transponder

A52B19

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N432FR · AIRBUS A-320neo · operated by FRONTIER AIRLINES INC.

Hex
A52B19
Octal
51225431
Decimal
10,824,473
Country
US
Tail
N432FR
Type
A20N
Broadcasting now · callsign FFT1204 · 19,075 ft
Flights observed
492
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

A52B19 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A52B19 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
FFT91 - 8 2026-07-13
FFT90 - 8 2026-07-13
FFT3054 Frontier Airlines 8 2026-04-22
FFT1689 Frontier Airlines 8 2026-04-20
FFT3072 - 7 2026-06-28
FFT3053 Frontier Airlines 7 2026-04-22
FFT2184 Frontier Airlines 7 2026-04-20
FFT1746 - 7 2026-06-18
FFT1690 Frontier Airlines 7 2026-04-20
FFT1203 - 7 2026-07-13
FFT4082 Frontier Airlines 6 2026-07-06
FFT2683 Frontier Airlines 6 2026-04-20
FFT4726 Frontier Airlines 5 2026-05-30
FFT4602 - 5 2026-07-07
FFT4420 Frontier Airlines 5 2026-05-18
FFT3071 - 5 2026-06-28
FFT1204 - 5 2026-07-13
FFT4725 Frontier Airlines 4 2026-05-21
FFT3306 Frontier Airlines 4 2026-05-21
FFT3287 - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 FFT1203 PHL → MIA Jul 13, 22:00 UTCJul 14, 00:20 UTC2h 20m
2026-07-13 FFT90 - Jul 13, 15:30 UTCJul 13, 18:45 UTC3h 15m
2026-07-13 FFT91 PHL → CUN Jul 13, 10:35 UTCJul 13, 13:50 UTC3h 15m
2026-07-13 FFT1204 - Jul 13, 02:30 UTCJul 13, 04:50 UTC2h 20m
2026-07-12 FFT1203 - Jul 12, 23:00 UTCJul 13, 01:20 UTC2h 20m
2026-07-12 FFT90 - Jul 12, 15:30 UTCJul 12, 19:01 UTC3h 30m
2026-07-12 FFT91 PHL → CUN Jul 12, 10:45 UTCJul 12, 13:50 UTC3h 5m
2026-07-12 FFT1204 - Jul 12, 02:20 UTCJul 12, 04:35 UTC2h 15m
2026-07-11 FFT1203 PHL → MIA Jul 11, 22:35 UTCJul 12, 00:50 UTC2h 15m
2026-07-11 FFT90 - Jul 11, 15:30 UTCJul 11, 18:50 UTC3h 20m
2026-07-11 FFT91 PHL → CUN Jul 11, 10:45 UTCJul 11, 13:50 UTC3h 5m
2026-07-11 FFT1204 - Jul 11, 02:00 UTCJul 11, 04:20 UTC2h 20m
2026-07-10 FFT1203 PHL → MIA Jul 10, 22:25 UTCJul 11, 00:40 UTC2h 15m
2026-07-10 FFT90 - Jul 10, 15:25 UTCJul 10, 18:40 UTC3h 15m
2026-07-10 FFT91 PSQ → CUN Jul 10, 10:40 UTCJul 10, 13:55 UTC3h 15m
2026-07-10 FFT1102 - Jul 10, 01:40 UTCJul 10, 03:15 UTC1h 35m
2026-07-10 FFT1102 ATL → PHL Jul 10, 01:36 UTCJul 10, 03:11 UTC1h 35m
2026-07-09 FFT1147 - Jul 9, 21:15 UTCJul 9, 23:05 UTC1h 50m
2026-07-09 FFT2538 TPA → PHL Jul 9, 16:45 UTCJul 9, 18:50 UTC2h 5m
2026-07-09 FFT2538 TPA → PHL Jul 9, 16:43 UTCJul 9, 18:49 UTC2h 6m
2026-07-09 FFT4807 PHL → TPA Jul 9, 12:55 UTCJul 9, 15:10 UTC2h 15m
2026-07-09 FFT1004 ATL → PHL Jul 9, 09:15 UTCJul 9, 10:50 UTC1h 35m
2026-07-08 FFT3500 - Jul 8, 23:45 UTCJul 9, 01:15 UTC1h 30m
2026-07-08 FFT3500 MCI → ATL Jul 8, 23:30 UTCJul 9, 01:15 UTC1h 45m
2026-07-08 FFT3499 - Jul 8, 20:40 UTCJul 8, 22:25 UTC1h 45m
2026-07-08 FFT3287 LGA → ATL Jul 8, 16:05 UTCJul 8, 17:50 UTC1h 45m
2026-07-08 FFT3288 ATL → LGA Jul 8, 12:45 UTCJul 8, 14:30 UTC1h 45m
2026-07-08 FFT3216 - Jul 8, 06:50 UTCJul 8, 10:45 UTC3h 55m
2026-07-08 FFT3316 - Jul 8, 03:40 UTCJul 8, 04:50 UTC1h 10m
2026-07-08 FFT3315 LAX → SMF Jul 8, 01:00 UTCJul 8, 02:00 UTC1h 0m
2026-07-07 FFT3215 - Jul 7, 19:30 UTCJul 7, 23:30 UTC4h 0m
2026-07-07 FFT1846 - Jul 7, 16:30 UTCJul 7, 17:35 UTC1h 5m
2026-07-07 FFT4771 - Jul 7, 13:45 UTCJul 7, 14:40 UTC55m
2026-07-07 FFT4601 EWR → ATL Jul 7, 10:10 UTCJul 7, 11:55 UTC1h 45m
2026-07-07 FFT4602 ATL → EWR Jul 7, 04:35 UTCJul 7, 06:15 UTC1h 40m
2026-07-07 FFT3453 - Jul 7, 01:20 UTCJul 7, 03:05 UTC1h 45m
2026-07-06 FFT3454 ATL → LGA Jul 6, 22:05 UTCJul 6, 23:50 UTC1h 45m
2026-07-06 FFT4076 - Jul 6, 16:35 UTCJul 6, 18:10 UTC1h 35m
2026-07-06 FFT2399 - Jul 6, 13:05 UTCJul 6, 14:35 UTC1h 30m
2026-07-06 FFT3216 - Jul 6, 06:55 UTCJul 6, 10:45 UTC3h 50m
2026-07-06 FFT4082 SJC → LAX Jul 6, 03:35 UTCJul 6, 04:25 UTC50m
2026-07-06 FFT4082 SJC → LAX Jul 6, 01:15 UTCJul 6, 02:05 UTC50m
2026-07-05 FFT3215 - Jul 5, 19:55 UTCJul 6, 00:00 UTC4h 5m
2026-07-05 FFT1116 LAS → ATL Jul 5, 13:50 UTCJul 5, 17:45 UTC3h 55m
2026-07-04 FFT3923 ATL → LAS Jul 4, 23:40 UTCJul 5, 03:35 UTC3h 55m
2026-07-04 FFT3046 MSP → ATL Jul 4, 19:35 UTCJul 4, 21:45 UTC2h 10m
2026-07-04 FFT3046 MSP → ATL Jul 4, 19:38 UTCJul 4, 21:42 UTC2h 4m
2026-07-04 FFT3045 ATL → MSP Jul 4, 16:00 UTCJul 4, 18:05 UTC2h 5m
2026-07-04 FFT2297 PHL → ATL Jul 4, 12:50 UTCJul 4, 14:20 UTC1h 30m
2026-07-04 FFT1004 ATL → PHL Jul 4, 09:20 UTCJul 4, 10:55 UTC1h 35m

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 N432FR page for operator, model, and routing details .

Mode-S A52B19 frequently asked

What is Mode-S code A52B19?
A52B19 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N432FR.
Where is Mode-S A52B19 registered?
Mode-S code A52B19 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 A52B19 broadcasting right now?
Yes. Mode-S A52B19 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A52B19, octal 51225431, decimal 10,824,473.
What flights does A52B19 operate?
Mode-S A52B19 has broadcast 20 distinct callsigns, including FFT91, FFT90, FFT3054, FFT1689, FFT3072.