Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3B87F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N339NW · AIRBUS A-320 · operated by DELTA AIR LINES INC

Hex
A3B87F
Octal
50734177
Decimal
10,729,599
Country
US
Tail
N339NW
Type
A320
No current signal · last broadcast May 25, 16:40 UTC
Flights observed
236
Distinct callsigns
20
Country
US
Last broadcast
May 25, 16:40 UTC

Last known position

Most recent position reported by Mode-S A3B87F.

Country allocation

The ICAO 24-bit address A3B87F 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
DAL1682 Delta Air Lines 14 2026-05-22
DAL2062 Delta Air Lines 12 2026-04-27
DAL1101 Delta Air Lines 10 2026-05-05
DAL1059 Delta Air Lines 9 2026-05-05
DAL1408 Delta Air Lines 7 2026-05-09
DAL2808 Delta Air Lines 6 2026-04-20
DAL2511 Delta Air Lines 6 2026-05-16
DAL2490 Delta Air Lines 6 2026-05-21
DAL1728 Delta Air Lines 6 2026-05-21
DAL2945 Delta Air Lines 5 2026-05-22
DAL2749 Delta Air Lines 5 2026-04-27
DAL2492 Delta Air Lines 5 2026-04-28
DAL2485 Delta Air Lines 5 2026-04-27
DAL2392 Delta Air Lines 5 2026-04-22
DAL1436 Delta Air Lines 5 2026-05-22
DAL850 Delta Air Lines 4 2026-05-14
DAL455 Delta Air Lines 4 2026-05-09
DAL2983 Delta Air Lines 4 2026-04-16
DAL2732 Delta Air Lines 4 2026-05-04
DAL2510 Delta Air Lines 4 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-25 9940 - May 25, 15:40 UTCMay 25, 16:40 UTC1h 0m
2026-05-24 DAL2009 BOS → RSW May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 DAL2009 BOS → RSW May 24, 22:54 UTCMay 25, 00:58 UTC2h 4m
2026-05-24 DAL1084 MSP → SFO May 24, 18:40 UTCMay 24, 20:50 UTC2h 10m
2026-05-24 DAL1324 RSW → DTW May 24, 14:45 UTCMay 24, 16:05 UTC1h 20m
2026-05-24 DAL1324 RSW → DTW May 24, 12:10 UTCMay 24, 13:20 UTC1h 10m
2026-05-24 DAL1393 LAX → SEA May 24, 00:00 UTCMay 24, 01:30 UTC1h 30m
2026-05-23 DAL1393 LAX → SEA May 23, 21:50 UTCMay 23, 23:00 UTC1h 10m
2026-05-23 DAL775 TPA → LAX May 23, 18:15 UTCMay 23, 19:45 UTC1h 30m
2026-05-23 DAL775 TPA → LAX May 23, 15:30 UTCMay 23, 16:50 UTC1h 20m
2026-05-23 DAL1236 JFK → FLL May 23, 12:10 UTCMay 23, 13:55 UTC1h 45m
2026-05-23 DAL1268 ATL → AVL May 23, 04:20 UTCMay 23, 05:50 UTC1h 30m
2026-05-23 DAL2892 OMA → ATL May 23, 00:40 UTCMay 23, 01:50 UTC1h 10m
2026-05-22 DAL2892 OMA → ATL May 22, 20:50 UTCMay 22, 22:00 UTC1h 10m
2026-05-22 DAL1682 BOS → JFK May 22, 17:35 UTCMay 22, 19:10 UTC1h 35m
2026-05-22 DAL1682 BOS → JFK May 22, 17:31 UTCMay 22, 19:10 UTC1h 39m
2026-05-22 DAL1682 BOS → JFK May 22, 14:10 UTCMay 22, 16:00 UTC1h 50m
2026-05-22 DAL1436 ATW → ATL May 22, 10:45 UTCMay 22, 12:35 UTC1h 50m
2026-05-22 DAL2945 BNA → BOS May 22, 01:50 UTCMay 22, 03:30 UTC1h 40m
2026-05-21 DAL1728 ATL → PIT May 21, 22:20 UTCMay 21, 23:50 UTC1h 30m
2026-05-21 DAL1728 ATL → PIT May 21, 19:25 UTCMay 21, 21:05 UTC1h 40m
2026-05-21 DAL2490 LGA → RSW May 21, 16:10 UTCMay 21, 17:55 UTC1h 45m
2026-05-21 DAL2490 LGA → RSW May 21, 13:05 UTCMay 21, 14:50 UTC1h 45m
2026-05-21 DAL410 DCA → ATL May 21, 10:20 UTCMay 21, 11:35 UTC1h 15m
2026-05-21 DAL537 ATL → DCA May 21, 02:15 UTCMay 21, 03:35 UTC1h 20m
2026-05-20 DAL1682 BOS → JFK May 20, 17:55 UTCMay 20, 19:30 UTC1h 35m
2026-05-20 DAL1682 BOS → JFK May 20, 14:20 UTCMay 20, 16:05 UTC1h 45m
2026-05-20 DAL1436 ATW → ATL May 20, 10:40 UTCMay 20, 12:25 UTC1h 45m
2026-05-20 DAL2945 BNA → BOS May 20, 02:10 UTCMay 20, 04:00 UTC1h 50m
2026-05-19 DAL1728 ATL → PIT May 19, 23:05 UTCMay 20, 00:30 UTC1h 25m
2026-05-19 DAL1728 ATL → PIT May 19, 20:00 UTCMay 19, 21:40 UTC1h 40m
2026-05-19 DAL2490 LGA → RSW May 19, 16:30 UTCMay 19, 18:35 UTC2h 5m
2026-05-19 DAL2490 LGA → RSW May 19, 13:05 UTCMay 19, 15:15 UTC2h 10m
2026-05-19 DAL410 DCA → ATL May 19, 10:20 UTCMay 19, 11:35 UTC1h 15m
2026-05-19 DAL537 ATL → DCA May 19, 02:30 UTCMay 19, 03:45 UTC1h 15m
2026-05-18 DAL2389 ALB → ATL May 18, 23:10 UTCMay 19, 01:05 UTC1h 55m
2026-05-18 DAL2389 ALB → ATL May 18, 20:05 UTCMay 18, 22:05 UTC2h 0m
2026-05-18 DAL380 SLC → JFK May 18, 16:15 UTCMay 18, 17:35 UTC1h 20m
2026-05-18 DAL380 SLC → JFK May 18, 16:12 UTCMay 18, 17:34 UTC1h 22m
2026-05-18 DAL380 SLC → JFK May 18, 13:25 UTCMay 18, 14:45 UTC1h 20m
2026-05-18 DAL2127 MSP → SLC May 18, 10:25 UTCMay 18, 11:45 UTC1h 20m
2026-05-18 DAL2127 MSP → SLC May 18, 10:24 UTCMay 18, 11:41 UTC1h 17m
2026-05-17 DAL1309 SLC → STL May 17, 23:54 UTCMay 18, 01:11 UTC1h 17m
2026-05-17 DAL1309 SLC → STL May 17, 23:55 UTCMay 18, 01:15 UTC1h 20m
2026-05-17 DAL360 ATL → LGA May 17, 20:25 UTCMay 17, 21:55 UTC1h 30m
2026-05-17 DAL360 ATL → LGA May 17, 17:30 UTCMay 17, 19:01 UTC1h 30m
2026-05-17 DAL1324 RSW → DTW May 17, 14:15 UTCMay 17, 15:35 UTC1h 20m
2026-05-17 DAL1324 RSW → DTW May 17, 11:45 UTCMay 17, 12:55 UTC1h 10m
2026-05-16 DAL386 SEA → JFK May 16, 23:45 UTCMay 17, 01:20 UTC1h 35m
2026-05-16 DAL436 ATL → DFW May 16, 20:35 UTCMay 16, 22:20 UTC1h 45m

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 N339NW page for operator, model, and routing details .

Mode-S A3B87F frequently asked

What is Mode-S code A3B87F?
A3B87F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N339NW.
Where is Mode-S A3B87F registered?
Mode-S code A3B87F 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 A3B87F broadcasting right now?
No active broadcast right now. Last signal was May 25, 16:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3B87F, octal 50734177, decimal 10,729,599.
What flights does A3B87F operate?
Mode-S A3B87F has broadcast 20 distinct callsigns, including DAL1682, DAL2062, DAL1101, DAL1059, DAL1408.