Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A91616

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N685DA · BOEING 757-200 · operated by DELTA AIR LINES INC

Hex
A91616
Octal
52213026
Decimal
11,081,238
Country
US
Tail
N685DA
Type
B752
No current signal · last broadcast 1h ago
Flights observed
434
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A91616.

Country allocation

The ICAO 24-bit address A91616 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
DAL1889 Delta Air Lines 13 2026-07-08
DAL982 - 12 2026-06-28
DAL1768 - 11 2026-07-08
DAL1902 Delta Air Lines 10 2026-04-16
DAL1930 Delta Air Lines 8 2026-07-09
DAL777 - 7 2026-07-13
DAL1823 - 7 2026-07-09
DAL1525 - 7 2026-07-10
DAL1153 Delta Air Lines 7 2026-04-29
DAL980 Delta Air Lines 6 2026-06-09
DAL8960 Delta Air Lines 6 2026-04-27
DAL391 - 6 2026-07-14
DAL334 Delta Air Lines 6 2026-06-27
DAL2881 Delta Air Lines 6 2026-05-23
DAL2588 Delta Air Lines 6 2026-05-20
DAL2569 - 6 2026-07-07
DAL1611 - 6 2026-06-28
DAL983 - 5 2026-06-28
DAL981 Delta Air Lines 5 2026-06-08
DAL913 - 5 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 DAL391 - Jul 14, 01:00 UTCJul 14, 05:00 UTC4h 0m
2026-07-13 DAL777 LAS → ATL Jul 13, 18:00 UTCJul 13, 21:30 UTC3h 30m
2026-07-13 DAL777 ATL → LAS Jul 13, 12:35 UTCJul 13, 16:10 UTC3h 35m
2026-07-13 DAL1385 RSW → ATL Jul 13, 09:40 UTCJul 13, 11:00 UTC1h 20m
2026-07-13 DAL1217 ATL → RSW Jul 13, 04:35 UTCJul 13, 05:45 UTC1h 10m
2026-07-13 DAL759 TPA → ATL Jul 13, 01:01 UTCJul 13, 02:05 UTC1h 5m
2026-07-12 DAL759 ATL → TPA Jul 12, 21:55 UTCJul 12, 23:20 UTC1h 25m
2026-07-12 DAL1215 FLL → ATL Jul 12, 17:15 UTCJul 12, 19:50 UTC2h 35m
2026-07-12 DAL1215 FLL → ATL Jul 12, 17:15 UTCJul 12, 19:46 UTC2h 31m
2026-07-12 DAL1229 ATL → FLL Jul 12, 14:30 UTCJul 12, 15:55 UTC1h 25m
2026-07-11 DAL599 - Jul 11, 21:55 UTCJul 12, 00:50 UTC2h 55m
2026-07-11 DAL602 - Jul 11, 16:35 UTCJul 11, 19:25 UTC2h 50m
2026-07-11 DAL1486 TPA → ATL Jul 11, 13:35 UTCJul 11, 14:35 UTC1h 0m
2026-07-11 DAL1720 ATL → TPA Jul 11, 02:05 UTCJul 11, 03:05 UTC1h 0m
2026-07-10 DAL1525 - Jul 10, 23:50 UTCJul 11, 00:30 UTC40m
2026-07-10 DAL1525 JAX → ATL Jul 10, 23:46 UTCJul 11, 00:33 UTC47m
2026-07-10 DAL1525 - Jul 10, 20:00 UTCJul 10, 21:40 UTC1h 40m
2026-07-10 DAL1525 ATL → TPA Jul 10, 17:05 UTCJul 10, 18:10 UTC1h 5m
2026-07-10 DAL2204 MCO → ATL Jul 10, 14:25 UTCJul 10, 15:25 UTC1h 0m
2026-07-10 DAL2204 ATL → MCO Jul 10, 11:40 UTCJul 10, 12:45 UTC1h 5m
2026-07-10 DAL879 LAS → ATL Jul 10, 05:20 UTCJul 10, 08:50 UTC3h 30m
2026-07-09 DAL722 ATL → LAS Jul 9, 23:00 UTCJul 10, 02:35 UTC3h 35m
2026-07-09 DAL1823 - Jul 9, 17:35 UTCJul 9, 21:10 UTC3h 35m
2026-07-09 DAL1930 JFK → STT Jul 9, 12:31 UTCJul 9, 15:59 UTC3h 28m
2026-07-09 DAL1930 JFK → STT Jul 9, 12:35 UTCJul 9, 15:55 UTC3h 20m
2026-07-08 DAL1768 - Jul 8, 21:40 UTCJul 9, 01:05 UTC3h 25m
2026-07-08 DAL1768 STT → JFK Jul 8, 21:34 UTCJul 9, 01:00 UTC3h 26m
2026-07-08 DAL1889 ATL → STT Jul 8, 16:20 UTCJul 8, 19:35 UTC3h 15m
2026-07-08 DAL2286 JFK → ATL Jul 8, 10:20 UTCJul 8, 12:00 UTC1h 40m
2026-07-07 DAL1768 - Jul 7, 21:15 UTCJul 8, 00:40 UTC3h 25m
2026-07-07 DAL1768 STT → JFK Jul 7, 21:08 UTCJul 8, 00:31 UTC3h 23m
2026-07-07 DAL1889 ATL → STT Jul 7, 15:55 UTCJul 7, 19:00 UTC3h 5m
2026-07-07 DAL1889 ATL → STT Jul 7, 15:51 UTCJul 7, 19:13 UTC3h 22m
2026-07-07 DAL2569 - Jul 7, 12:30 UTCJul 7, 13:15 UTC45m
2026-07-07 DAL1001 - Jul 7, 02:35 UTCJul 7, 03:25 UTC50m
2026-07-06 DAL2345 ATL → MSY Jul 6, 23:20 UTCJul 7, 00:50 UTC1h 30m
2026-07-06 DAL2345 ATL → MSY Jul 6, 20:00 UTCJul 6, 21:30 UTC1h 30m
2026-07-06 DAL901 BOS → ATL Jul 6, 14:30 UTCJul 6, 17:45 UTC3h 15m
2026-07-06 DAL757 ATL → PHX Jul 6, 01:05 UTCJul 6, 04:45 UTC3h 40m
2026-07-05 DAL1101 ORF → ATL Jul 5, 21:50 UTCJul 5, 23:10 UTC1h 20m
2026-07-05 DAL1101 ORF → ATL Jul 5, 21:48 UTCJul 5, 23:11 UTC1h 23m
2026-07-05 DAL1101 ATL → ORF Jul 5, 19:00 UTCJul 5, 20:15 UTC1h 15m
2026-07-05 DAL1089 RSW → ATL Jul 5, 16:10 UTCJul 5, 17:30 UTC1h 20m
2026-07-05 DAL1089 ATL → RSW Jul 5, 13:40 UTCJul 5, 14:55 UTC1h 15m
2026-07-05 DAL1703 - Jul 5, 00:50 UTCJul 5, 01:35 UTC45m
2026-07-05 DAL1703 JAX → ATL Jul 5, 00:47 UTCJul 5, 01:51 UTC1h 4m
2026-07-04 DAL1703 - Jul 4, 20:25 UTCJul 4, 23:50 UTC3h 25m
2026-07-04 DAL1776 ATL → GUA Jul 4, 15:50 UTCJul 4, 18:35 UTC2h 45m
2026-07-04 DAL2569 - Jul 4, 12:30 UTCJul 4, 13:15 UTC45m
2026-07-04 DAL1001 - Jul 4, 03:25 UTCJul 4, 04:05 UTC40m

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 N685DA page for operator, model, and routing details .

Mode-S A91616 frequently asked

What is Mode-S code A91616?
A91616 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N685DA.
Where is Mode-S A91616 registered?
Mode-S code A91616 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 A91616 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A91616, octal 52213026, decimal 11,081,238.
What flights does A91616 operate?
Mode-S A91616 has broadcast 20 distinct callsigns, including DAL1889, DAL982, DAL1768, DAL1902, DAL1930.