Apparatus

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sensors Mode-S transponder

A3899D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N327PG · EMBRAER ERJ-170-100 · operated by AMERICAN AIRLINES INC

Hex
A3899D
Octal
50704635
Decimal
10,717,597
Country
US
Tail
N327PG
Type
E170
Broadcasting now · 2,125 ft
Flights observed
805
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:15 UTC

Current position

A3899D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A3899D 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
ENY4138 - 10 2026-06-26
ENY4060 - 10 2026-06-15
ENY3762 Envoy Air 10 2026-06-09
ENY3453 - 8 2026-07-16
ENY3967 - 7 2026-07-06
ENY3787 - 7 2026-07-06
ENY3580 - 7 2026-07-02
ENY4290 - 6 2026-06-22
ENY4158 Envoy Air 6 2026-06-15
ENY4120 - 6 2026-07-04
ENY4082 Envoy Air 6 2026-07-23
ENY3778 Envoy Air 6 2026-06-21
ENY3726 Envoy Air 6 2026-05-27
ENY3689 Envoy Air 6 2026-05-30
ENY3578 - 6 2026-07-06
ENY3551 - 6 2026-06-23
ENY3384 Envoy Air 6 2026-05-24
ENY3338 Envoy Air 6 2026-07-26
ENY4237 Envoy Air 5 2026-07-24
ENY3989 Envoy Air 5 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3749 MEM → DCA Jul 26, 20:00 UTCJul 26, 21:15 UTC1h 15m
2026-07-26 ENY3338 MSY → DFW Jul 26, 17:50 UTCJul 26, 18:25 UTC35m
2026-07-26 ENY3338 MSY → DFW Jul 26, 15:55 UTCJul 26, 16:15 UTC20m
2026-07-26 ENY3858 TLH → MIA Jul 26, 13:30 UTCJul 26, 14:50 UTC1h 20m
2026-07-26 ENY3585 STS → DFW Jul 26, 11:35 UTCJul 26, 12:35 UTC1h 0m
2026-07-26 ENY3585 STS → DFW Jul 26, 11:35 UTCJul 26, 12:35 UTC1h 0m
2026-07-26 ENY3629 MIA → AZS Jul 26, 00:45 UTCJul 26, 02:25 UTC1h 40m
2026-07-26 ENY3629 MIA → AZS Jul 26, 00:42 UTCJul 26, 02:20 UTC1h 38m
2026-07-25 ENY3629 MIA → AZS Jul 25, 21:55 UTCJul 25, 23:45 UTC1h 50m
2026-07-25 ENY3355 BOS → CMH Jul 25, 19:45 UTCJul 25, 20:10 UTC25m
2026-07-25 ENY3355 BOS → CMH Jul 25, 17:50 UTCJul 25, 18:05 UTC15m
2026-07-25 ENY3717 ORD → PIT Jul 25, 14:15 UTCJul 25, 15:10 UTC55m
2026-07-25 ENY3717 ORD → PIT Jul 25, 12:55 UTCJul 25, 13:35 UTC40m
2026-07-25 ENY3888 DCA → MSP Jul 25, 10:15 UTCJul 25, 11:45 UTC1h 30m
2026-07-25 ENY3888 DCA → MSP Jul 25, 10:11 UTCJul 25, 11:44 UTC1h 33m
2026-07-25 ENY3897 MIA → GSP Jul 25, 03:25 UTCJul 25, 04:40 UTC1h 15m
2026-07-25 ENY3605 BNA → TPA Jul 25, 00:20 UTCJul 25, 01:20 UTC1h 0m
2026-07-25 ENY3605 BNA → TPA Jul 25, 00:15 UTCJul 25, 01:11 UTC56m
2026-07-24 ENY3605 BNA → TPA Jul 24, 22:30 UTCJul 24, 23:20 UTC50m
2026-07-24 ENY4237 MIA → EIS Jul 24, 17:00 UTCJul 24, 19:30 UTC2h 30m
2026-07-24 ENY3363 - Jul 24, 13:35 UTCJul 24, 15:50 UTC2h 15m
2026-07-24 ENY3386 ORD → CMH Jul 24, 11:05 UTCJul 24, 12:35 UTC1h 30m
2026-07-24 ENY3386 ORD → CMH Jul 24, 11:02 UTCJul 24, 12:34 UTC1h 32m
2026-07-24 ENY4109 MIA → PNS Jul 24, 04:00 UTCJul 24, 05:20 UTC1h 20m
2026-07-23 ENY4082 LAN → ORD Jul 23, 23:45 UTCJul 24, 01:20 UTC1h 35m
2026-07-23 ENY4082 LAN → ORD Jul 23, 23:38 UTCJul 24, 01:19 UTC1h 41m
2026-07-23 ENY3931 CHS → ORD Jul 23, 21:05 UTCJul 23, 21:15 UTC10m
2026-07-23 ENY3931 CHS → ORD Jul 23, 21:02 UTCJul 23, 22:39 UTC1h 37m
2026-07-23 ENY3355 BOS → CMH Jul 23, 18:19 UTCJul 23, 19:04 UTC45m
2026-07-23 ENY3355 BOS → CMH Jul 23, 16:30 UTCJul 23, 16:55 UTC25m
2026-07-23 ENY3342 MEM → PHX Jul 23, 12:25 UTCJul 23, 14:35 UTC2h 10m
2026-07-23 ENY3342 MEM → PHX Jul 23, 12:13 UTCJul 23, 14:34 UTC2h 21m
2026-07-22 ENY3376 - Jul 22, 23:25 UTCJul 23, 01:45 UTC2h 20m
2026-07-22 ENY3884 SDF → DFW Jul 22, 21:20 UTCJul 22, 21:50 UTC30m
2026-07-22 ENY3884 SDF → DFW Jul 22, 20:52 UTCJul 22, 21:47 UTC55m
2026-07-22 ENY3884 SDF → DFW Jul 22, 19:05 UTCJul 22, 19:25 UTC20m
2026-07-22 ENY3338 MSY → DFW Jul 22, 17:05 UTCJul 22, 17:30 UTC25m
2026-07-22 ENY3338 MSY → DFW Jul 22, 15:20 UTCJul 22, 15:35 UTC15m
2026-07-22 ENY3367 FAY → DFW Jul 22, 11:20 UTCJul 22, 13:25 UTC2h 5m
2026-07-22 ENY3380 DCA → MSY Jul 22, 02:00 UTCJul 22, 04:25 UTC2h 25m
2026-07-21 ENY3350 BDL → ORD Jul 21, 19:00 UTCJul 21, 21:15 UTC2h 15m
2026-07-21 ENY3350 BDL → ORD Jul 21, 18:47 UTCJul 21, 21:20 UTC2h 33m
2026-07-21 ENY3989 ORD → CVG Jul 21, 15:30 UTCJul 21, 17:35 UTC2h 5m
2026-07-21 ENY3640 GSO → MIA Jul 21, 11:15 UTCJul 21, 12:55 UTC1h 40m
2026-07-21 ENY3754 MIA → GSO Jul 21, 01:20 UTCJul 21, 03:10 UTC1h 50m
2026-07-21 ENY3754 MIA → GSO Jul 21, 01:19 UTCJul 21, 03:08 UTC1h 49m
2026-07-21 ENY3517 ATL → CLT Jul 21, 00:00 UTCJul 21, 00:20 UTC20m
2026-07-20 ENY3517 ATL → CLT Jul 20, 22:30 UTCJul 20, 22:50 UTC20m
2026-07-20 ENY3339 AGU → DFW Jul 20, 20:00 UTCJul 20, 20:30 UTC30m
2026-07-20 ENY3339 AGU → DFW Jul 20, 18:05 UTCJul 20, 18:30 UTC25m

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 N327PG page for operator, model, and routing details .

Mode-S A3899D frequently asked

What is Mode-S code A3899D?
A3899D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N327PG.
Where is Mode-S A3899D registered?
Mode-S code A3899D 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 A3899D broadcasting right now?
Yes. Mode-S A3899D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3899D, octal 50704635, decimal 10,717,597.
What flights does A3899D operate?
Mode-S A3899D has broadcast 20 distinct callsigns, including ENY4138, ENY4060, ENY3762, ENY3453, ENY3967.