Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A94B4D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N69835 · BOEING 737-900 · operated by UNITED AIRLINES INC

Hex
A94B4D
Octal
52245515
Decimal
11,094,861
Country
US
Tail
N69835
Type
B739
No current signal · last broadcast 13d ago
Flights observed
318
Distinct callsigns
20
Country
US
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S A94B4D.

Country allocation

The ICAO 24-bit address A94B4D 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
UAL2370 United Airlines 5 2026-06-11
UAL1057 - 5 2026-06-23
UAL2801 - 4 2026-06-24
UAL2315 United Airlines 4 2026-06-09
UAL2207 - 4 2026-06-23
UAL1828 - 4 2026-06-26
UAL1732 United Airlines 4 2026-06-10
UAL592 United Airlines 3 2026-04-17
UAL486 United Airlines 3 2026-05-09
UAL450 United Airlines 3 2026-05-14
UAL2347 United Airlines 3 2026-05-08
UAL1916 - 3 2026-04-13
UAL1621 United Airlines 3 2026-04-14
UAL1131 - 3 2026-04-13
UAL8279 United Airlines 2 2026-06-20
UAL8135 United Airlines 2 2026-05-27
UAL782 United Airlines 2 2026-06-13
UAL777 United Airlines 2 2026-04-21
UAL767 United Airlines 2 2026-06-02
UAL759 United Airlines 2 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-01 UAL3923 - Jul 1, 04:40 UTCJul 1, 05:00 UTC20m
2026-06-29 UAL2171 - Jun 29, 13:24 UTCJun 29, 16:50 UTC3h 25m
2026-06-29 UAL658 ORD → ONT Jun 29, 01:50 UTCJun 29, 05:34 UTC3h 45m
2026-06-28 UAL2747 - Jun 28, 22:49 UTCJun 29, 00:14 UTC1h 25m
2026-06-28 UAL2747 BUF → ORD Jun 28, 22:20 UTCJun 28, 23:53 UTC1h 33m
2026-06-28 UAL2226 ORD → BUF Jun 28, 19:29 UTCJun 28, 20:34 UTC1h 5m
2026-06-28 UAL1239 ATL → ORD Jun 28, 15:55 UTCJun 28, 17:39 UTC1h 45m
2026-06-28 UAL425 ORD → ATL Jun 28, 12:39 UTCJun 28, 14:04 UTC1h 25m
2026-06-28 UAL1503 ORD → BOS Jun 28, 00:25 UTCJun 28, 03:59 UTC3h 35m
2026-06-27 UAL1660 ORD → SEA Jun 27, 19:19 UTCJun 27, 23:04 UTC3h 45m
2026-06-27 UAL343 BNA → ORD Jun 27, 16:20 UTCJun 27, 17:49 UTC1h 30m
2026-06-27 UAL2175 ORD → BNA Jun 27, 12:45 UTCJun 27, 13:44 UTC1h 0m
2026-06-27 UAL2175 ORD → BNA Jun 27, 12:43 UTCJun 27, 13:40 UTC57m
2026-06-26 UAL651 - Jun 26, 23:49 UTCJun 27, 02:50 UTC3h 0m
2026-06-26 UAL651 FLL → ORD Jun 26, 23:57 UTCJun 27, 02:27 UTC2h 30m
2026-06-26 UAL2635 ORD → FLL Jun 26, 19:55 UTCJun 26, 22:25 UTC2h 30m
2026-06-26 UAL1239 ATL → ORD Jun 26, 16:00 UTCJun 26, 17:35 UTC1h 35m
2026-06-26 UAL425 ORD → ATL Jun 26, 12:59 UTCJun 26, 14:25 UTC1h 25m
2026-06-26 UAL1148 SMF → ORD Jun 26, 08:10 UTCJun 26, 11:40 UTC3h 30m
2026-06-26 UAL1828 ORD → SMF Jun 26, 02:50 UTCJun 26, 06:50 UTC4h 0m
2026-06-26 UAL1828 ORD → SMF Jun 26, 02:22 UTCJun 26, 06:49 UTC4h 27m
2026-06-25 UAL1148 SMF → ORD Jun 25, 20:25 UTCJun 25, 23:55 UTC3h 30m
2026-06-25 UAL1828 ORD → SMF Jun 25, 15:07 UTCJun 25, 18:52 UTC3h 45m
2026-06-25 UAL1828 ORD → SMF Jun 25, 14:55 UTCJun 25, 18:55 UTC4h 0m
2026-06-25 UAL660 PSQ → ORD Jun 25, 10:04 UTCJun 25, 11:54 UTC1h 50m
2026-06-25 UAL8145 - Jun 25, 04:49 UTCJun 25, 06:14 UTC1h 25m
2026-06-24 UAL2106 - Jun 24, 20:44 UTCJun 24, 23:29 UTC2h 45m
2026-06-24 UAL1620 - Jun 24, 16:45 UTCJun 24, 19:20 UTC2h 35m
2026-06-24 UAL2801 TPA → ORD Jun 24, 00:59 UTCJun 24, 03:24 UTC2h 25m
2026-06-23 UAL1057 ORD → TPA Jun 23, 20:10 UTCJun 23, 22:10 UTC2h 0m
2026-06-23 UAL2207 - Jun 23, 17:34 UTCJun 23, 17:39 UTC5m
2026-06-23 UAL2207 - Jun 23, 15:50 UTCJun 23, 17:15 UTC1h 25m
2026-06-23 UAL2207 PHL → ORD Jun 23, 15:50 UTCJun 23, 17:17 UTC1h 27m
2026-06-23 UAL2038 - Jun 23, 12:45 UTCJun 23, 14:15 UTC1h 30m
2026-06-23 UAL1962 - Jun 23, 07:35 UTCJun 23, 11:04 UTC3h 30m
2026-06-23 UAL483 - Jun 23, 01:04 UTCJun 23, 04:09 UTC3h 5m
2026-06-22 UAL1591 DEN → EWR Jun 22, 20:39 UTCJun 22, 23:35 UTC2h 55m
2026-06-22 UAL457 - Jun 22, 17:40 UTCJun 22, 18:40 UTC1h 0m
2026-06-22 UAL2356 LAS → SFO Jun 22, 14:59 UTCJun 22, 16:10 UTC1h 10m
2026-06-22 UAL1995 - Jun 22, 02:59 UTCJun 22, 04:00 UTC1h 0m
2026-06-22 UAL1995 SFO → LAS Jun 22, 03:14 UTCJun 22, 04:04 UTC50m
2026-06-21 UAL382 - Jun 21, 22:00 UTCJun 22, 01:35 UTC3h 35m
2026-06-21 UAL2110 - Jun 21, 16:30 UTCJun 21, 19:45 UTC3h 15m
2026-06-21 UAL500 IND → SFO Jun 21, 10:34 UTCJun 21, 15:05 UTC4h 30m
2026-06-21 UAL1199 DEN → IND Jun 21, 00:34 UTCJun 21, 02:55 UTC2h 20m
2026-06-20 UAL302 - Jun 20, 19:55 UTCJun 20, 22:54 UTC3h 0m
2026-06-20 UAL1915 DEN → DTW Jun 20, 16:05 UTCJun 20, 18:19 UTC2h 15m
2026-06-20 UAL2754 BOG → EWR Jun 20, 12:09 UTCJun 20, 13:55 UTC1h 45m
2026-06-20 UAL2754 BOG → EWR Jun 20, 12:15 UTCJun 20, 13:49 UTC1h 34m
2026-06-20 UAL8279 DUB → YUL Jun 20, 06:54 UTCJun 20, 07:44 UTC50m

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 N69835 page for operator, model, and routing details .

Mode-S A94B4D frequently asked

What is Mode-S code A94B4D?
A94B4D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N69835.
Where is Mode-S A94B4D registered?
Mode-S code A94B4D 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 A94B4D broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A94B4D, octal 52245515, decimal 11,094,861.
What flights does A94B4D operate?
Mode-S A94B4D has broadcast 20 distinct callsigns, including UAL2370, UAL1057, UAL2801, UAL2315, UAL2207.