flight Aircraft

N990ST

N990ST is a BOEING 737-400 (ICAO type code B734 ).

N990ST is operated by NATIONAL NUCLEAR SECURITY ADMINISTRATION .

N990ST broadcasts on Mode-S (ICAO 24-bit) address ADD445 (octal 53352105 ). View the transponder page .

BOEING 737-400

Operated by NATIONAL NUCLEAR SECURITY ADMINISTRATION

Not currently tracked · last seen 6d ago

Last known area

Map centered near N990ST's most recent activity.

Date	Route	Takeoff	Landing	Duration
2026-07-07	CKV → ABQ	Jul 7, 17:15 UTC	Jul 7, 19:40 UTC	2h 25m
2026-07-07	-	Jul 7, 13:50 UTC	Jul 7, 16:20 UTC	2h 30m
2026-07-06	ABQ → ABQ	Jul 6, 15:15 UTC	Jul 6, 16:45 UTC	1h 30m
2026-06-29	-	Jun 29, 17:19 UTC	Jun 29, 18:34 UTC	1h 15m

Registration	N990ST
Aircraft type	BOEING 737-400 (B734)
Operator	NATIONAL NUCLEAR SECURITY ADMINISTRATION
Mode-S code	ADD445 · 53352105 (octal)

Looking for transponder-level data? View the Mode-S ADD445 page for country allocation, callsign history, and ADS-B signal details.

What type of aircraft is N990ST?

N990ST is a BOEING 737-400 (ICAO type code B734).

Who operates N990ST?

N990ST is operated by NATIONAL NUCLEAR SECURITY ADMINISTRATION.

What is the Mode-S transponder code for N990ST?

N990ST broadcasts on Mode-S (ICAO 24-bit) address ADD445 (octal 53352105). View the transponder page.

Where is N990ST right now?

N990ST is not currently being tracked; last seen 6d ago.