Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADF06D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N998AT · BOEING 717-200 · operated by DELTA AIR LINES INC, DEPT 595 AIRCRAFT REGISTRATIONS

Hex
ADF06D
Octal
53370155
Decimal
11,399,277
Country
US
Tail
N998AT
Type
B712
No current signal · last broadcast Jul 26, 20:45 UTC
Flights observed
567
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:45 UTC

Last known position

Most recent position reported by Mode-S ADF06D.

Country allocation

The ICAO 24-bit address ADF06D 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
DAL2620 - 10 2026-06-18
DAL2128 Delta Air Lines 9 2026-06-02
DAL1743 - 9 2026-07-22
DAL3025 Delta Air Lines 8 2026-05-11
DAL2973 Delta Air Lines 8 2026-05-08
DAL2718 Delta Air Lines 8 2026-05-24
DAL844 - 6 2026-07-01
DAL3199 Delta Air Lines 6 2026-05-09
DAL3088 Delta Air Lines 6 2026-05-17
DAL3036 Delta Air Lines 6 2026-05-01
DAL2823 Delta Air Lines 6 2026-05-27
DAL1155 Delta Air Lines 6 2026-05-27
DAL1104 - 6 2026-06-15
DAL516 - 5 2026-06-15
DAL512 Delta Air Lines 5 2026-07-25
DAL3191 Delta Air Lines 5 2026-06-09
DAL3189 Delta Air Lines 5 2026-06-01
DAL3182 - 5 2026-07-23
DAL3143 Delta Air Lines 5 2026-06-03
DAL3045 Delta Air Lines 5 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAL1125 SEA → ORD Jul 26, 18:45 UTCJul 26, 20:35 UTC1h 50m
2026-07-26 DAL1125 SEA → ORD Jul 26, 15:40 UTCJul 26, 17:35 UTC1h 55m
2026-07-26 DAL1565 JFK → BOS Jul 26, 12:35 UTCJul 26, 13:40 UTC1h 5m
2026-07-25 DAL2701 ATL → LIT Jul 25, 23:15 UTCJul 26, 00:15 UTC1h 0m
2026-07-25 DAL512 DAL → ATL Jul 25, 20:20 UTCJul 25, 22:10 UTC1h 50m
2026-07-25 DAL512 DAL → ATL Jul 25, 20:15 UTCJul 25, 22:10 UTC1h 55m
2026-07-25 DAL512 DAL → ATL Jul 25, 17:25 UTCJul 25, 19:05 UTC1h 40m
2026-07-25 DAL1158 MSN → DTW Jul 25, 13:50 UTCJul 25, 15:35 UTC1h 45m
2026-07-25 DAL2784 ORD → LGA Jul 25, 00:15 UTCJul 25, 02:00 UTC1h 45m
2026-07-24 DAL2467 FLL → BOS Jul 24, 21:30 UTCJul 24, 22:20 UTC50m
2026-07-24 DAL2467 FLL → BOS Jul 24, 18:30 UTCJul 24, 19:10 UTC40m
2026-07-24 DAL2942 ATL → PHL Jul 24, 16:35 UTCJul 24, 17:05 UTC30m
2026-07-24 DAL2942 ATL → PHL Jul 24, 14:45 UTCJul 24, 15:05 UTC20m
2026-07-24 DAL2379 ATL → HPN Jul 24, 10:40 UTCJul 24, 12:25 UTC1h 45m
2026-07-24 DAL1616 ORD → MSP Jul 24, 00:10 UTCJul 24, 02:05 UTC1h 55m
2026-07-23 DAL2153 MSP → GRR Jul 23, 22:20 UTCJul 23, 22:55 UTC35m
2026-07-23 DAL2153 MSP → GRR Jul 23, 20:25 UTCJul 23, 21:00 UTC35m
2026-07-23 DAL3182 MYR → ATL Jul 23, 17:58 UTCJul 23, 18:50 UTC52m
2026-07-23 DAL3182 - Jul 23, 16:10 UTCJul 23, 16:50 UTC40m
2026-07-22 DAL3133 GNV → ATL Jul 22, 20:05 UTCJul 22, 20:55 UTC50m
2026-07-22 DAL3133 GNV → ATL Jul 22, 18:20 UTCJul 22, 19:05 UTC45m
2026-07-22 DAL1743 - Jul 22, 16:25 UTCJul 22, 17:00 UTC35m
2026-07-22 DAL1743 - Jul 22, 14:25 UTCJul 22, 15:05 UTC40m
2026-07-22 DAL3009 HSV → ATL Jul 22, 12:20 UTCJul 22, 13:00 UTC40m
2026-07-22 DAL3009 HSV → ATL Jul 22, 12:18 UTCJul 22, 12:47 UTC29m
2026-07-21 DAL3171 - Jul 21, 23:15 UTCJul 21, 23:50 UTC35m
2026-07-21 DAL3163 BWI → DTW Jul 21, 21:05 UTCJul 21, 21:40 UTC35m
2026-07-21 DAL3163 BWI → DTW Jul 21, 19:30 UTCJul 21, 20:00 UTC30m
2026-07-21 DAL3040 ATL → LIT Jul 21, 17:20 UTCJul 21, 18:20 UTC1h 0m
2026-07-21 DAL3040 ATL → LIT Jul 21, 14:45 UTCJul 21, 15:45 UTC1h 0m
2026-07-21 DAL1369 - Jul 21, 12:35 UTCJul 21, 13:05 UTC30m
2026-07-21 DAL2371 - Jul 21, 00:50 UTCJul 21, 01:20 UTC30m
2026-07-20 DAL1637 ATL → MSP Jul 20, 19:50 UTCJul 20, 21:30 UTC1h 40m
2026-07-20 DAL1637 ATL → MSP Jul 20, 19:46 UTCJul 20, 21:28 UTC1h 42m
2026-07-20 DAL1637 ATL → MSP Jul 20, 17:00 UTCJul 20, 18:40 UTC1h 40m
2026-07-20 DAL1721 - Jul 20, 11:10 UTCJul 20, 12:00 UTC50m
2026-07-20 DAL1721 MOB → ATL Jul 20, 11:08 UTCJul 20, 11:58 UTC50m
2026-07-20 DAL2029 - Jul 20, 03:55 UTCJul 20, 04:40 UTC45m
2026-07-17 DAL1743 - Jul 17, 16:19 UTCJul 17, 16:49 UTC30m
2026-07-17 DAL1743 TYS → ATL Jul 17, 16:14 UTCJul 17, 16:52 UTC38m
2026-07-17 DAL1743 - Jul 17, 14:35 UTCJul 17, 15:10 UTC35m
2026-07-17 DAL1183 - Jul 17, 11:30 UTCJul 17, 12:40 UTC1h 10m
2026-07-17 DAL3111 ATL → BTR Jul 17, 04:39 UTCJul 17, 05:39 UTC1h 0m
2026-07-17 DAL3111 ATL → BTR Jul 17, 04:38 UTCJul 17, 05:37 UTC59m
2026-07-15 DAL9980 ATL → ATL Jul 15, 23:45 UTCJul 16, 00:10 UTC25m
2026-07-15 DAL9980 ATL → ATL Jul 15, 23:41 UTCJul 16, 00:11 UTC30m
2026-07-07 DAL3053 - Jul 7, 00:00 UTCJul 7, 00:55 UTC55m
2026-07-06 DAL3053 ATL → ECP Jul 6, 22:20 UTCJul 6, 23:00 UTC40m
2026-07-06 DAL1549 MSP → ATL Jul 6, 20:10 UTCJul 6, 20:55 UTC45m
2026-07-06 DAL1549 MSP → ATL Jul 6, 17:50 UTCJul 6, 18:45 UTC55m

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 N998AT page for operator, model, and routing details .

Mode-S ADF06D frequently asked

What is Mode-S code ADF06D?
ADF06D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N998AT.
Where is Mode-S ADF06D registered?
Mode-S code ADF06D 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 ADF06D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADF06D, octal 53370155, decimal 11,399,277.
What flights does ADF06D operate?
Mode-S ADF06D has broadcast 20 distinct callsigns, including DAL2620, DAL2128, DAL1743, DAL3025, DAL2973.