Apparatus

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sensors Mode-S transponder

A178DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N194UW · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A178DE
Octal
50274336
Decimal
10,582,238
Country
US
Tail
N194UW
Type
A321
Broadcasting now · callsign AAL2611 · 34,000 ft
Flights observed
257
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A178DE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A178DE 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
AAL2852 American Airlines 5 2026-04-29
AAL783 American Airlines 4 2026-06-01
AAL3002 American Airlines 4 2026-05-31
AAL2461 American Airlines 4 2026-05-04
AAL1843 American Airlines 4 2026-05-14
AAL595 American Airlines 3 2026-05-20
AAL2836 American Airlines 3 2026-05-31
AAL2733 American Airlines 3 2026-04-26
AAL2203 American Airlines 3 2026-05-06
AAL2051 American Airlines 3 2026-05-12
AAL1832 American Airlines 3 2026-05-18
AAL1546 American Airlines 3 2026-06-10
AAL1043 American Airlines 3 2026-05-25
AAL9786 American Airlines 2 2026-04-25
AAL974 American Airlines 2 2026-05-18
AAL779 American Airlines 2 2026-06-09
AAL765 American Airlines 2 2026-05-16
AAL703 American Airlines 2 2026-05-08
AAL651 American Airlines 2 2026-05-20
AAL608 American Airlines 2 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-13 AAL2611 RSW → PHL Jun 13, 01:00 UTCJun 13, 01:30 UTC30m
2026-06-12 AAL2098 ORD → PHL Jun 12, 21:10 UTCJun 12, 22:25 UTC1h 15m
2026-06-12 AAL1312 LGA → ORD Jun 12, 17:20 UTCJun 12, 19:31 UTC2h 11m
2026-06-12 AAL1312 LGA → ORD Jun 12, 17:20 UTCJun 12, 19:45 UTC2h 25m
2026-06-12 AAL2964 PHL → PHX Jun 12, 11:25 UTCJun 12, 14:25 UTC3h 0m
2026-06-12 AAL1188 GUA → DFW Jun 12, 05:10 UTCJun 12, 09:25 UTC4h 15m
2026-06-11 AAL2329 MIA → PHL Jun 11, 22:45 UTCJun 12, 02:30 UTC3h 46m
2026-06-11 AAL2777 DFW → LGA Jun 11, 20:00 UTCJun 11, 21:20 UTC1h 20m
2026-06-11 AAL2957 MSY → DCA Jun 11, 14:25 UTCJun 11, 18:10 UTC3h 45m
2026-06-11 AAL2025 DCA → LGA Jun 11, 00:50 UTCJun 11, 05:25 UTC4h 35m
2026-06-10 AAL1162 BOS → PHL Jun 10, 20:05 UTCJun 10, 22:30 UTC2h 25m
2026-06-10 AAL1162 BOS → PHL Jun 10, 19:06 UTCJun 10, 22:30 UTC3h 24m
2026-06-10 AAL1546 GND → MIA Jun 10, 16:10 UTCJun 10, 16:30 UTC20m
2026-06-10 AAL1546 GND → MIA Jun 10, 14:20 UTCJun 10, 14:45 UTC25m
2026-06-10 AAL1546 GND → MIA Jun 10, 14:18 UTCJun 10, 17:20 UTC3h 2m
2026-06-10 AAL3189 AEX → DFW Jun 10, 10:12 UTCJun 10, 12:35 UTC2h 23m
2026-06-10 AAL3189 AEX → DFW Jun 10, 10:15 UTCJun 10, 12:35 UTC2h 20m
2026-06-10 AAL2343 ORD → SAN Jun 10, 03:25 UTCJun 10, 05:55 UTC2h 30m
2026-06-09 AAL1288 PVR → DFW Jun 9, 23:15 UTCJun 10, 01:35 UTC2h 20m
2026-06-09 AAL779 BOS → LAX Jun 9, 16:45 UTCJun 9, 20:45 UTC4h 0m
2026-06-09 AAL779 BOS → LAX Jun 9, 16:31 UTCJun 9, 20:37 UTC4h 6m
2026-06-09 AAL1969 SRQ → ORD Jun 9, 12:20 UTCJun 9, 14:45 UTC2h 25m
2026-06-09 AAL1969 SRQ → ORD Jun 9, 12:17 UTCJun 9, 14:40 UTC2h 23m
2026-06-09 AAL3099 MSP → CLT Jun 9, 07:10 UTCJun 9, 09:15 UTC2h 5m
2026-06-09 AAL3099 MSP → CLT Jun 9, 07:06 UTCJun 9, 09:07 UTC2h 1m
2026-06-09 AAL2106 PHX → LAS Jun 9, 03:40 UTCJun 9, 04:25 UTC45m
2026-06-08 AAL2982 PWM → DCA Jun 8, 21:25 UTCJun 9, 01:35 UTC4h 10m
2026-06-08 AAL2982 PWM → DCA Jun 8, 21:22 UTCJun 9, 01:35 UTC4h 13m
2026-06-08 AAL2912 ORD → XNA Jun 8, 18:05 UTCJun 8, 19:35 UTC1h 30m
2026-06-08 AAL2912 ORD → XNA Jun 8, 18:00 UTCJun 8, 19:30 UTC1h 30m
2026-06-07 AAL2562 PHL → DFW Jun 7, 20:55 UTCJun 8, 01:20 UTC4h 25m
2026-06-07 AAL2562 PHL → DFW Jun 7, 14:25 UTCJun 7, 19:20 UTC4h 55m
2026-06-06 AAL2465 SNA → DFW Jun 6, 20:39 UTCJun 7, 00:44 UTC4h 5m
2026-06-06 AAL2482 LAS → PHL Jun 6, 15:39 UTCJun 6, 19:19 UTC3h 40m
2026-06-06 AAL3074 ORD → RSW Jun 6, 11:45 UTCJun 6, 13:34 UTC1h 50m
2026-06-06 AAL2189 MHT → CLT Jun 6, 02:50 UTCJun 6, 03:55 UTC1h 5m
2026-06-05 AAL2100 MCI → DFW Jun 5, 23:40 UTCJun 6, 00:50 UTC1h 10m
2026-06-05 AAL2100 MCI → DFW Jun 5, 21:15 UTCJun 5, 22:25 UTC1h 10m
2026-06-05 AAL2127 LGA → DCA Jun 5, 18:10 UTCJun 5, 19:20 UTC1h 10m
2026-06-05 AAL2127 LGA → DCA Jun 5, 15:30 UTCJun 5, 16:40 UTC1h 10m
2026-06-05 AAL1853 LAS → DFW Jun 5, 12:15 UTCJun 5, 13:45 UTC1h 30m
2026-06-05 AAL1853 LAS → DFW Jun 5, 12:13 UTCJun 5, 13:45 UTC1h 32m
2026-06-05 AAL1764 SEA → ORD Jun 5, 03:25 UTCJun 5, 04:40 UTC1h 15m
2026-06-04 AAL1552 DFW → TPA Jun 4, 23:35 UTCJun 5, 01:15 UTC1h 40m
2026-06-04 AAL1552 DFW → TPA Jun 4, 19:55 UTCJun 4, 21:50 UTC1h 55m
2026-06-04 AAL2074 PHL → ORD Jun 4, 17:00 UTCJun 4, 18:15 UTC1h 15m
2026-06-04 AAL2074 PHL → ORD Jun 4, 14:30 UTCJun 4, 15:40 UTC1h 10m
2026-06-04 AAL2538 DCA → SYR Jun 4, 11:25 UTCJun 4, 12:40 UTC1h 15m
2026-06-04 AAL2538 DCA → SYR Jun 4, 11:23 UTCJun 4, 12:38 UTC1h 15m
2026-06-04 AAL2022 CLT → TPA Jun 4, 00:30 UTCJun 4, 01:40 UTC1h 10m

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 N194UW page for operator, model, and routing details .

Mode-S A178DE frequently asked

What is Mode-S code A178DE?
A178DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N194UW.
Where is Mode-S A178DE registered?
Mode-S code A178DE 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 A178DE broadcasting right now?
Yes. Mode-S A178DE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A178DE, octal 50274336, decimal 10,582,238.
What flights does A178DE operate?
Mode-S A178DE has broadcast 20 distinct callsigns, including AAL2852, AAL783, AAL3002, AAL2461, AAL1843.