# N990ST — BOEING 737-4YO
> **1989** Fixed Wing Multi-Engine · Turbo-Fan · Owner: NATIONAL NUCLEAR SECURITY ADMINISTRATION · ALBUQUERQUE, NM
## Aircraft
- **N-Number:** N990ST
- **Serial Number:** 24493
- **Manufacturer:** BOEING
- **Model:** 737-4YO
- **Year manufactured:** 1989
- **Type:** Fixed Wing Multi-Engine
- **Engine type:** Turbo-Fan (02 engines)
- **Seats:** 149
- **Weight class:** CLASS 3
- **Mode S code (hex):** `ADD445`
## Owner
- **Name:** NATIONAL NUCLEAR SECURITY ADMINISTRATION
- **Type of registrant:** Government
- **Location:** ALBUQUERQUE, NM 871855400, US
## Registration
- **Status:** Valid
- **Certificate issued:** 2020-06-09
- **Last action:** 2023-01-22
- **Expiration:** 2027-06-30
## Source
- [FAA Aircraft Inquiry](https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=990ST)
- [ADS-B Exchange live tracking](https://globe.adsbexchange.com/?icao=add445)
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