Apparatus

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sensors Mode-S transponder

A355B1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N314AD · operated by AMERICAN AIRLINES INC

Hex
A355B1
Octal
50652661
Decimal
10,704,305
Country
US
Tail
N314AD
Type
E75L
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
727
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A355B1.

Country allocation

The ICAO 24-bit address A355B1 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
ENY3708 - 8 2026-06-16
ENY3676 - 8 2026-07-20
ENY3797 Envoy Air 7 2026-06-17
ENY3371 Envoy Air 7 2026-07-05
ENY4176 Envoy Air 6 2026-04-28
ENY3502 - 6 2026-06-18
ENY4236 Envoy Air 5 2026-04-19
ENY4225 Envoy Air 5 2026-04-21
ENY4140 Envoy Air 5 2026-04-22
ENY4095 Envoy Air 5 2026-05-30
ENY3998 Envoy Air 5 2026-07-23
ENY3874 Envoy Air 5 2026-05-06
ENY3768 Envoy Air 5 2026-05-31
ENY3753 Envoy Air 5 2026-05-12
ENY3683 - 5 2026-06-20
ENY3651 Envoy Air 5 2026-06-02
ENY3577 - 5 2026-07-08
ENY3441 Envoy Air 5 2026-06-16
ENY3388 - 5 2026-07-21
ENY4291 Envoy Air 4 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3440 CMI → ORD Jul 26, 18:35 UTCJul 26, 21:00 UTC2h 25m
2026-07-26 ENY3992 XNA → DFW Jul 26, 16:25 UTCJul 26, 17:40 UTC1h 15m
2026-07-26 ENY3992 XNA → DFW Jul 26, 16:25 UTCJul 26, 17:34 UTC1h 9m
2026-07-26 ENY3992 XNA → DFW Jul 26, 14:30 UTCJul 26, 15:35 UTC1h 5m
2026-07-26 ENY3826 PIA → ORD Jul 26, 00:50 UTCJul 26, 02:55 UTC2h 5m
2026-07-25 ENY3826 PIA → ORD Jul 25, 21:50 UTCJul 26, 00:05 UTC2h 15m
2026-07-25 ENY3508 CHS → ORD Jul 25, 16:10 UTCJul 25, 18:50 UTC2h 40m
2026-07-25 ENY3773 PVD → ORD Jul 25, 12:40 UTCJul 25, 14:55 UTC2h 15m
2026-07-25 ENY3597 RDU → ORD Jul 25, 03:35 UTCJul 25, 05:30 UTC1h 55m
2026-07-25 ENY4126 LBB → DFW Jul 25, 01:40 UTCJul 25, 02:05 UTC25m
2026-07-25 ENY4126 LBB → DFW Jul 25, 01:36 UTCJul 25, 02:03 UTC27m
2026-07-25 ENY4126 LBB → DFW Jul 25, 00:20 UTCJul 25, 00:45 UTC25m
2026-07-24 ENY3852 GRB → ORD Jul 24, 20:50 UTCJul 24, 23:15 UTC2h 25m
2026-07-24 ENY3852 GRB → ORD Jul 24, 20:34 UTCJul 24, 23:16 UTC2h 42m
2026-07-24 ENY3852 GRB → ORD Jul 24, 17:05 UTCJul 24, 19:00 UTC1h 55m
2026-07-24 ENY4048 IAH → DFW Jul 24, 13:20 UTCJul 24, 15:25 UTC2h 5m
2026-07-24 ENY4028 BOS → CVG Jul 24, 04:03 UTCJul 24, 06:10 UTC2h 7m
2026-07-24 ENY4028 BOS → CVG Jul 24, 04:05 UTCJul 24, 06:15 UTC2h 10m
2026-07-23 ENY3998 BNA → DFW Jul 23, 23:30 UTCJul 24, 01:34 UTC2h 4m
2026-07-23 ENY3998 BNA → DFW Jul 23, 23:30 UTCJul 24, 01:40 UTC2h 10m
2026-07-23 ENY3998 BNA → DFW Jul 23, 20:10 UTCJul 23, 22:25 UTC2h 15m
2026-07-23 ENY3508 - Jul 23, 16:05 UTCJul 23, 19:00 UTC2h 55m
2026-07-23 ENY3773 PVD → ORD Jul 23, 13:25 UTCJul 23, 14:30 UTC1h 5m
2026-07-23 ENY3773 PVD → ORD Jul 23, 12:35 UTCJul 23, 12:45 UTC10m
2026-07-23 ENY3773 PVD → ORD Jul 23, 12:33 UTCJul 23, 14:29 UTC1h 56m
2026-07-23 ENY3597 RDU → ORD Jul 23, 03:55 UTCJul 23, 05:55 UTC2h 0m
2026-07-23 ENY3998 BNA → DFW Jul 23, 00:10 UTCJul 23, 02:10 UTC2h 0m
2026-07-22 ENY3998 BNA → DFW Jul 22, 21:05 UTCJul 22, 23:20 UTC2h 15m
2026-07-22 ENY4031 ELP → AUS Jul 22, 18:30 UTCJul 22, 19:35 UTC1h 5m
2026-07-22 ENY4031 ELP → AUS Jul 22, 16:35 UTCJul 22, 17:40 UTC1h 5m
2026-07-22 ENY3984 BZN → AUS Jul 22, 13:40 UTCJul 22, 15:20 UTC1h 40m
2026-07-21 ENY3611 - Jul 21, 02:30 UTCJul 21, 02:50 UTC20m
2026-07-21 ENY3388 - Jul 21, 00:20 UTCJul 21, 01:05 UTC45m
2026-07-20 ENY3388 - Jul 20, 22:30 UTCJul 20, 23:10 UTC40m
2026-07-20 ENY3676 - Jul 20, 20:00 UTCJul 20, 21:00 UTC1h 0m
2026-07-20 ENY3676 MEM → DFW Jul 20, 19:55 UTCJul 20, 20:54 UTC59m
2026-07-20 ENY3676 - Jul 20, 17:45 UTCJul 20, 18:55 UTC1h 10m
2026-07-20 ENY3486 AZO → ORD Jul 20, 15:25 UTCJul 20, 16:30 UTC1h 5m
2026-07-20 ENY3486 AZO → ORD Jul 20, 13:50 UTCJul 20, 14:40 UTC50m
2026-07-20 ENY3360 - Jul 20, 11:20 UTCJul 20, 12:20 UTC1h 0m
2026-07-20 ENY3360 LFT → DFW Jul 20, 11:15 UTCJul 20, 12:12 UTC57m
2026-07-20 ENY3359 - Jul 20, 03:40 UTCJul 20, 04:35 UTC55m
2026-07-20 ENY3359 DFW → LFT Jul 20, 03:40 UTCJul 20, 04:34 UTC54m
2026-07-20 ENY3557 CMH → DFW Jul 20, 01:55 UTCJul 20, 02:35 UTC40m
2026-07-20 ENY3557 CMH → DFW Jul 20, 00:30 UTCJul 20, 02:15 UTC1h 45m
2026-07-20 ENY3558 GSP → MIA Jul 20, 00:10 UTCJul 20, 01:38 UTC1h 28m
2026-07-19 ENY3558 - Jul 19, 21:40 UTCJul 19, 23:15 UTC1h 35m
2026-07-19 ENY3386 - Jul 19, 11:20 UTCJul 19, 13:10 UTC1h 50m
2026-07-19 ENY4109 HWO → PNS Jul 19, 03:25 UTCJul 19, 04:45 UTC1h 20m
2026-07-18 ENY3954 STL → DCA Jul 18, 23:30 UTCJul 19, 02:00 UTC2h 30m

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 N314AD page for operator, model, and routing details .

Mode-S A355B1 frequently asked

What is Mode-S code A355B1?
A355B1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N314AD.
Where is Mode-S A355B1 registered?
Mode-S code A355B1 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 A355B1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A355B1, octal 50652661, decimal 10,704,305.
What flights does A355B1 operate?
Mode-S A355B1 has broadcast 20 distinct callsigns, including ENY3708, ENY3676, ENY3797, ENY3371, ENY4176.