Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AAF87F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N806DN · BOEING 737-900 · operated by DELTA AIR LINES INC

Hex
AAF87F
Octal
52574177
Decimal
11,204,735
Country
US
Tail
N806DN
Type
B739
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
520
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S AAF87F.

Country allocation

The ICAO 24-bit address AAF87F 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
DAL305 - 8 2026-06-20
DAL2951 - 8 2026-07-15
DAL2058 Delta Air Lines 6 2026-06-10
DAL2396 - 5 2026-06-17
DAL2312 Delta Air Lines 5 2026-06-02
DAL2205 Delta Air Lines 5 2026-04-17
DAL1956 - 5 2026-07-16
DAL1910 - 5 2026-07-10
DAL1414 - 5 2026-06-21
DAL1002 - 5 2026-06-23
DAL963 - 4 2026-07-09
DAL891 Delta Air Lines 4 2026-07-22
DAL508 Delta Air Lines 4 2026-07-22
DAL2978 Delta Air Lines 4 2026-06-09
DAL2688 Delta Air Lines 4 2026-04-14
DAL2437 Delta Air Lines 4 2026-05-11
DAL2233 - 4 2026-07-08
DAL1947 - 4 2026-07-16
DAL1843 - 4 2026-07-13
DAL1741 - 4 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL2400 ATL → MSY Jul 26, 18:35 UTCJul 26, 21:45 UTC3h 10m
2026-07-26 DAL2400 ATL → MSY Jul 26, 14:15 UTCJul 26, 17:00 UTC2h 45m
2026-07-26 DAL2510 LGA → MSP Jul 26, 10:10 UTCJul 26, 12:40 UTC2h 30m
2026-07-25 DAL2732 ATL → STL Jul 25, 20:45 UTCJul 25, 22:55 UTC2h 10m
2026-07-25 DAL2134 RIC → ATL Jul 25, 13:55 UTCJul 25, 17:00 UTC3h 5m
2026-07-25 DAL2672 ATL → DTW Jul 25, 03:05 UTCJul 25, 05:30 UTC2h 25m
2026-07-24 DAL871 SFO → ATL Jul 24, 23:55 UTCJul 25, 01:35 UTC1h 40m
2026-07-24 DAL849 ATL → BOS Jul 24, 21:00 UTCJul 24, 22:25 UTC1h 25m
2026-07-24 DAL902 BOS → DEN Jul 24, 17:35 UTCJul 24, 19:15 UTC1h 40m
2026-07-24 DAL1176 BWI → SLC Jul 24, 11:35 UTCJul 24, 15:40 UTC4h 5m
2026-07-24 DAL1176 BWI → SLC Jul 24, 11:31 UTCJul 24, 15:36 UTC4h 5m
2026-07-24 DAL2079 LGA → TPA Jul 24, 05:35 UTCJul 24, 09:05 UTC3h 30m
2026-07-24 DAL2079 LGA → TPA Jul 24, 05:32 UTCJul 24, 09:04 UTC3h 32m
2026-07-24 DAL2209 BOS → CVG Jul 24, 00:50 UTCJul 24, 03:55 UTC3h 5m
2026-07-23 DAL449 DTW → DEN Jul 23, 19:30 UTCJul 23, 23:00 UTC3h 30m
2026-07-23 DAL449 DTW → DEN Jul 23, 19:25 UTCJul 23, 23:01 UTC3h 36m
2026-07-23 DAL1071 ATL → AVL Jul 23, 17:05 UTCJul 23, 17:45 UTC40m
2026-07-23 DAL2253 LAS → LAX Jul 23, 14:20 UTCJul 23, 15:05 UTC45m
2026-07-22 DAL508 SLC → JFK Jul 22, 22:55 UTCJul 23, 03:25 UTC4h 30m
2026-07-22 DAL508 SLC → JFK Jul 22, 17:00 UTCJul 22, 21:25 UTC4h 25m
2026-07-22 DAL891 MSP → MEM Jul 22, 11:45 UTCJul 22, 15:25 UTC3h 40m
2026-07-22 DAL2126 DTW → BNA Jul 22, 01:55 UTCJul 22, 03:45 UTC1h 50m
2026-07-21 DAL1913 DTW → SJU Jul 21, 21:10 UTCJul 21, 23:25 UTC2h 15m
2026-07-21 DAL1913 DTW → SJU Jul 21, 18:50 UTCJul 21, 19:05 UTC15m
2026-07-21 DAL1913 DTW → SJU Jul 21, 13:25 UTCJul 21, 17:20 UTC3h 55m
2026-07-20 DAL717 SFO → DTW Jul 20, 22:57 UTCJul 21, 02:48 UTC3h 51m
2026-07-20 DAL717 SFO → DTW Jul 20, 23:00 UTCJul 21, 02:50 UTC3h 50m
2026-07-20 DAL2074 MSP → IND Jul 20, 17:39 UTCJul 20, 21:12 UTC3h 33m
2026-07-20 DAL2074 MSP → IND Jul 20, 17:40 UTCJul 20, 21:15 UTC3h 35m
2026-07-20 DAL2473 ATL → JFK Jul 20, 12:35 UTCJul 20, 15:01 UTC2h 26m
2026-07-20 DAL2473 ATL → JFK Jul 20, 12:35 UTCJul 20, 15:00 UTC2h 25m
2026-07-19 DAL2604 JFK → ORD Jul 19, 23:55 UTCJul 20, 01:15 UTC1h 20m
2026-07-19 DAL1468 DTW → MIA Jul 19, 17:55 UTCJul 19, 20:30 UTC2h 35m
2026-07-19 DAL1468 DTW → MIA Jul 19, 13:45 UTCJul 19, 16:10 UTC2h 25m
2026-07-18 DAL2236 BOS → PBI Jul 18, 17:40 UTCJul 18, 20:35 UTC2h 55m
2026-07-18 DAL1535 - Jul 18, 13:10 UTCJul 18, 14:20 UTC1h 10m
2026-07-18 DAL1496 SLC → PHX Jul 18, 04:45 UTCJul 18, 05:55 UTC1h 10m
2026-07-18 DAL1165 SEA → SLC Jul 18, 01:25 UTCJul 18, 02:55 UTC1h 31m
2026-07-17 DAL481 ATL → SEA Jul 17, 19:30 UTCJul 17, 23:55 UTC4h 25m
2026-07-17 DAL1400 STL → ATL Jul 17, 16:00 UTCJul 17, 17:09 UTC1h 10m
2026-07-17 DAL1400 ATL → STL Jul 17, 13:20 UTCJul 17, 14:30 UTC1h 10m
2026-07-17 DAL1565 - Jul 17, 10:55 UTCJul 17, 12:00 UTC1h 5m
2026-07-17 DAL2701 - Jul 17, 01:39 UTCJul 17, 02:34 UTC55m
2026-07-16 DAL1956 - Jul 16, 22:30 UTCJul 17, 00:04 UTC1h 35m
2026-07-16 DAL1956 NAS → ATL Jul 16, 22:17 UTCJul 17, 00:07 UTC1h 50m
2026-07-16 DAL1947 - Jul 16, 18:59 UTCJul 16, 20:19 UTC1h 20m
2026-07-16 DAL1424 MSY → ATL Jul 16, 15:49 UTCJul 16, 16:49 UTC1h 0m
2026-07-16 DAL1424 ATL → MSY Jul 16, 13:10 UTCJul 16, 14:15 UTC1h 5m
2026-07-16 DAL1499 - Jul 16, 10:15 UTCJul 16, 11:20 UTC1h 5m
2026-07-16 DAL2997 ATL → SRQ Jul 16, 03:15 UTCJul 16, 04:25 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 N806DN page for operator, model, and routing details .

Mode-S AAF87F frequently asked

What is Mode-S code AAF87F?
AAF87F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N806DN.
Where is Mode-S AAF87F registered?
Mode-S code AAF87F 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 AAF87F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF87F, octal 52574177, decimal 11,204,735.
What flights does AAF87F operate?
Mode-S AAF87F has broadcast 20 distinct callsigns, including DAL305, DAL2951, DAL2058, DAL2396, DAL2312.