Apparatus

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sensors Mode-S transponder

A3A27A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N333RQ · operated by AMERICAN AIRLINES INC

Hex
A3A27A
Octal
50721172
Decimal
10,723,962
Country
US
Tail
N333RQ
No current signal · last broadcast Jul 26, 19:20 UTC
Flights observed
788
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 19:20 UTC

Last known position

Most recent position reported by Mode-S A3A27A.

Country allocation

The ICAO 24-bit address A3A27A 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
ENY3680 Envoy Air 10 2026-05-02
ENY4104 Envoy Air 9 2026-05-01
ENY4081 - 9 2026-06-21
ENY4101 - 7 2026-07-19
ENY4099 - 7 2026-06-28
ENY4035 - 7 2026-06-30
ENY3938 Envoy Air 7 2026-07-18
ENY3795 - 7 2026-07-17
ENY3580 Envoy Air 7 2026-04-30
ENY4113 - 6 2026-06-15
ENY4078 Envoy Air 6 2026-06-13
ENY3969 - 6 2026-07-04
ENY3874 - 6 2026-06-29
ENY3870 Envoy Air 6 2026-06-15
ENY3787 Envoy Air 6 2026-07-17
ENY3773 - 6 2026-06-26
ENY3770 Envoy Air 6 2026-06-18
ENY3504 Envoy Air 6 2026-06-04
ENY3347 Envoy Air 6 2026-06-06
ENY4150 Envoy Air 5 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3577 DFW → LRD Jul 26, 17:40 UTCJul 26, 19:05 UTC1h 25m
2026-07-26 ENY3577 DFW → LRD Jul 26, 15:05 UTCJul 26, 16:30 UTC1h 25m
2026-07-26 ENY3641 BOS → PNS Jul 26, 13:10 UTCJul 26, 13:55 UTC45m
2026-07-26 ENY3692 CLT → LIT Jul 26, 01:40 UTCJul 26, 03:05 UTC1h 25m
2026-07-26 ENY3692 CLT → LIT Jul 26, 01:37 UTCJul 26, 03:08 UTC1h 31m
2026-07-25 ENY3519 ORD → ORF Jul 25, 22:05 UTCJul 25, 23:45 UTC1h 40m
2026-07-25 ENY3519 ORD → ORF Jul 25, 21:58 UTCJul 25, 23:44 UTC1h 46m
2026-07-25 ENY3519 ORD → ORF Jul 25, 19:20 UTCJul 25, 20:50 UTC1h 30m
2026-07-25 ENY3582 TAM → DFW Jul 25, 17:00 UTCJul 25, 17:40 UTC40m
2026-07-25 ENY3582 TAM → DFW Jul 25, 15:20 UTCJul 25, 16:00 UTC40m
2026-07-25 ENY4083 SGF → CLT Jul 25, 11:55 UTCJul 25, 13:40 UTC1h 45m
2026-07-25 ENY4083 SGF → CLT Jul 25, 11:54 UTCJul 25, 13:35 UTC1h 41m
2026-07-25 ENY4017 CLT → SGF Jul 25, 00:50 UTCJul 25, 02:30 UTC1h 40m
2026-07-24 ENY3519 ORD → ORF Jul 24, 21:10 UTCJul 24, 22:55 UTC1h 45m
2026-07-24 ENY3519 ORD → ORF Jul 24, 18:30 UTCJul 24, 20:00 UTC1h 30m
2026-07-24 ENY3563 BOS → IND Jul 24, 16:10 UTCJul 24, 16:45 UTC35m
2026-07-24 ENY3563 BOS → IND Jul 24, 16:04 UTCJul 24, 16:44 UTC40m
2026-07-24 ENY3563 BOS → IND Jul 24, 14:25 UTCJul 24, 15:00 UTC35m
2026-07-24 ENY3965 CMH → ORD Jul 24, 11:55 UTCJul 24, 12:15 UTC20m
2026-07-24 ENY3648 ORD → GSO Jul 24, 00:35 UTCJul 24, 01:50 UTC1h 15m
2026-07-23 ENY3785 DCA → RSW Jul 23, 21:20 UTCJul 23, 23:00 UTC1h 40m
2026-07-23 ENY3785 DCA → RSW Jul 23, 21:18 UTCJul 23, 22:57 UTC1h 39m
2026-07-23 ENY3785 DCA → RSW Jul 23, 18:55 UTCJul 23, 20:20 UTC1h 25m
2026-07-23 ENY3546 ORD → MCI Jul 23, 15:05 UTCJul 23, 15:45 UTC40m
2026-07-23 ENY3546 ORD → MCI Jul 23, 15:02 UTCJul 23, 15:44 UTC42m
2026-07-23 ENY3546 ORD → MCI Jul 23, 13:15 UTCJul 23, 13:50 UTC35m
2026-07-23 ENY3845 - Jul 23, 10:40 UTCJul 23, 11:35 UTC55m
2026-07-23 ENY3695 ORD → BOS Jul 23, 04:35 UTCJul 23, 05:35 UTC1h 0m
2026-07-23 ENY3695 ORD → BOS Jul 23, 04:31 UTCJul 23, 05:35 UTC1h 4m
2026-07-23 ENY3454 ORD → CLE Jul 23, 00:35 UTCJul 23, 02:30 UTC1h 55m
2026-07-23 ENY3454 ORD → CLE Jul 23, 00:29 UTCJul 23, 02:28 UTC1h 59m
2026-07-22 ENY3454 ORD → CLE Jul 22, 21:25 UTCJul 22, 23:00 UTC1h 35m
2026-07-22 ENY3811 MHT → ORD Jul 22, 17:35 UTCJul 22, 19:30 UTC1h 55m
2026-07-22 ENY3811 MHT → ORD Jul 22, 17:28 UTCJul 22, 19:23 UTC1h 55m
2026-07-22 ENY3613 DFW → AMA Jul 22, 14:45 UTCJul 22, 16:15 UTC1h 30m
2026-07-22 ENY3590 RDU → DCA Jul 22, 11:55 UTCJul 22, 13:20 UTC1h 25m
2026-07-22 ENY3590 RDU → DCA Jul 22, 11:53 UTCJul 22, 13:16 UTC1h 23m
2026-07-22 ENY4281 ORD → TUL Jul 22, 03:55 UTCJul 22, 05:25 UTC1h 30m
2026-07-21 ENY3771 CVG → DFW Jul 21, 23:55 UTCJul 22, 02:30 UTC2h 35m
2026-07-21 ENY3771 CVG → DFW Jul 21, 22:20 UTCJul 21, 22:55 UTC35m
2026-07-21 ENY3771 CVG → DFW Jul 21, 19:05 UTCJul 21, 21:05 UTC2h 0m
2026-07-21 ENY3439 MSN → DFW Jul 21, 16:00 UTCJul 21, 18:00 UTC2h 0m
2026-07-21 ENY3439 MSN → DFW Jul 21, 13:55 UTCJul 21, 14:50 UTC55m
2026-07-21 ENY3845 - Jul 21, 10:45 UTCJul 21, 11:50 UTC1h 5m
2026-07-21 ENY3695 ORD → BOS Jul 21, 04:20 UTCJul 21, 05:40 UTC1h 20m
2026-07-21 ENY4176 XNA → MIA Jul 21, 00:05 UTCJul 21, 03:05 UTC3h 0m
2026-07-20 ENY4176 XNA → MIA Jul 20, 20:25 UTCJul 20, 22:40 UTC2h 15m
2026-07-20 ENY3455 CID → ORD Jul 20, 17:38 UTCJul 20, 18:19 UTC41m
2026-07-20 ENY3455 - Jul 20, 15:30 UTCJul 20, 16:40 UTC1h 10m
2026-07-20 ENY4150 MHT → ORD Jul 20, 12:00 UTCJul 20, 13:30 UTC1h 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 N333RQ page for operator, model, and routing details .

Mode-S A3A27A frequently asked

What is Mode-S code A3A27A?
A3A27A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N333RQ.
Where is Mode-S A3A27A registered?
Mode-S code A3A27A 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 A3A27A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A27A, octal 50721172, decimal 10,723,962.
What flights does A3A27A operate?
Mode-S A3A27A has broadcast 20 distinct callsigns, including ENY3680, ENY4104, ENY4081, ENY4101, ENY4099.