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 7d ago
Flights observed
521
Distinct callsigns
20
Country
US
Last broadcast
7d ago

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
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
DAL3191 Delta Air Lines 5 2026-06-09
DAL3189 Delta Air Lines 5 2026-06-01
DAL3143 Delta Air Lines 5 2026-06-03
DAL3045 Delta Air Lines 5 2026-06-02
DAL3042 Delta Air Lines 5 2026-06-12
DAL2801 Delta Air Lines 5 2026-04-25
DAL2571 Delta Air Lines 5 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-06 DAL1374 - Jul 6, 15:35 UTCJul 6, 16:35 UTC1h 0m
2026-07-06 DAL1374 - Jul 6, 13:30 UTCJul 6, 14:25 UTC55m
2026-07-06 DAL1727 - Jul 6, 10:40 UTCJul 6, 11:15 UTC35m
2026-07-05 DAL1549 MSP → ATL Jul 5, 18:00 UTCJul 5, 18:25 UTC25m
2026-07-04 DAL3198 PNS → ATL Jul 4, 16:45 UTCJul 4, 17:35 UTC50m
2026-07-04 DAL3198 PNS → ATL Jul 4, 16:45 UTCJul 4, 17:33 UTC48m
2026-07-04 DAL3198 ATL → PNS Jul 4, 14:45 UTCJul 4, 15:30 UTC45m
2026-07-04 DAL1160 - Jul 4, 11:10 UTCJul 4, 12:50 UTC1h 40m
2026-07-04 DAL1160 MSN → ATL Jul 4, 11:08 UTCJul 4, 12:45 UTC1h 37m
2026-07-04 DAL9970 MDW → MSN Jul 4, 01:40 UTCJul 4, 02:15 UTC35m
2026-07-03 DAL2417 ATL → MDW Jul 3, 21:50 UTCJul 3, 23:20 UTC1h 30m
2026-07-03 DAL1743 - Jul 3, 16:00 UTCJul 3, 16:30 UTC30m
2026-07-03 DAL1743 - Jul 3, 14:25 UTCJul 3, 14:55 UTC30m
2026-07-03 DAL1624 - Jul 3, 12:00 UTCJul 3, 12:55 UTC55m
2026-07-03 DAL2001 ATL → MEM Jul 3, 00:40 UTCJul 3, 01:30 UTC50m
2026-07-02 DAL3032 - Jul 2, 21:55 UTCJul 2, 22:40 UTC45m
2026-07-02 DAL1429 - Jul 2, 18:45 UTCJul 2, 20:00 UTC1h 15m
2026-07-02 DAL2884 MSP → SAT Jul 2, 15:15 UTCJul 2, 16:15 UTC1h 0m
2026-07-02 DAL2884 MSP → SAT Jul 2, 15:15 UTCJul 2, 16:13 UTC58m
2026-07-02 DAL2884 MSP → SAT Jul 2, 13:00 UTCJul 2, 14:00 UTC1h 0m
2026-07-02 DAL2596 - Jul 2, 10:20 UTCJul 2, 11:35 UTC1h 15m
2026-07-02 DAL2609 - Jul 2, 01:55 UTCJul 2, 03:00 UTC1h 5m
2026-07-01 DAL2822 STL → DTW Jul 1, 23:15 UTCJul 2, 00:20 UTC1h 5m
2026-07-01 DAL2822 - Jul 1, 20:55 UTCJul 1, 22:05 UTC1h 10m
2026-07-01 DAL844 - Jul 1, 18:30 UTCJul 1, 19:15 UTC45m
2026-07-01 DAL844 MSN → DTW Jul 1, 18:30 UTCJul 1, 19:16 UTC46m
2026-07-01 DAL844 - Jul 1, 16:30 UTCJul 1, 17:20 UTC50m
2026-07-01 DAL2968 - Jul 1, 13:50 UTCJul 1, 15:00 UTC1h 10m
2026-07-01 DAL2968 - Jul 1, 11:10 UTCJul 1, 12:25 UTC1h 15m
2026-06-30 DAL1430 - Jun 30, 21:15 UTCJun 30, 22:30 UTC1h 15m
2026-06-30 DAL3031 - Jun 30, 19:05 UTCJun 30, 19:50 UTC45m
2026-06-30 DAL3031 ATL → CLT Jun 30, 19:04 UTCJun 30, 19:46 UTC42m
2026-06-29 DAL9980 ATL → ATL Jun 29, 19:00 UTCJun 29, 19:54 UTC55m
2026-06-27 DAL2277 ALB → ATL Jun 27, 14:05 UTCJun 27, 14:54 UTC50m
2026-06-26 DAL1700 - Jun 26, 19:55 UTCJun 26, 20:44 UTC50m
2026-06-25 DAL2364 ATL → OMA Jun 25, 13:14 UTCJun 25, 14:59 UTC1h 45m
2026-06-24 DAL2364 ATL → OMA Jun 24, 20:44 UTCJun 24, 22:39 UTC1h 55m
2026-06-24 DAL3092 - Jun 24, 18:39 UTCJun 24, 19:24 UTC45m
2026-06-24 DAL3092 - Jun 24, 16:34 UTCJun 24, 17:25 UTC50m
2026-06-24 DAL2232 - Jun 24, 14:24 UTCJun 24, 15:24 UTC1h 0m
2026-06-24 DAL2232 ATL → LEX Jun 24, 12:25 UTCJun 24, 13:14 UTC50m
2026-06-24 DAL3018 - Jun 24, 09:45 UTCJun 24, 10:30 UTC45m
2026-06-24 DAL3005 ATL → GSO Jun 24, 03:39 UTCJun 24, 04:31 UTC52m
2026-06-24 DAL3005 - Jun 24, 03:40 UTCJun 24, 04:24 UTC45m
2026-06-24 DAL3063 - Jun 24, 01:19 UTCJun 24, 02:09 UTC50m
2026-06-24 DAL3063 GPT → ATL Jun 24, 01:16 UTCJun 24, 02:09 UTC53m

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 7d ago.
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, DAL3025, DAL2973, DAL2718.