King Air Nose Extension & EO/IR Lift
Beechcraft King Air 350 · Supplemental Type Certificate
Overview
This document outlines the Supplemental Type Certificate (STC) modifications made by Sierra Nevada Corporation (SNC) for the Beechcraft King Air series, specifically focusing on the King Air 350 model. The modifications include a structural extension of the aircraft's nose to accommodate a retractable electro-optical/infrared (EO/IR) sensor. This STC allows for significant flexibility in mission requirements while maintaining the aircraft's original weight and center of gravity limitations. The document is intended for operators and maintainers of the King Air 350, providing essential information about the modifications and their operational benefits.
- The STC allows for a 3-foot structural modification to the King Air 350.
- The installation accommodates a fully retractable 15-inch EO/IR sensor.
- The sensor can be deployed/retracted in less than 20 seconds.
- The aircraft's weight and center of gravity limitations remain unchanged from the OEM configuration.
- The modification provides a low-visibility profile when the sensor is stowed.
Document
Source
Originally published by www.sncorp.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Supplemental Type Certificate
- Year
- 2022
- Pages
- 2
- File size
- 1.7 MB
- Publisher
- www.sncorp.com
Common. Rarer than 12% of the aircraft models we track.
Most owners only have the POH. Here's the essential set for the Beechcraft King Air 350.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)Not on file
- Systems & Wiring
- Service BulletinsNot on file
- Type Certificate (TCDS)Not on file
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In this document
Extended Nose Features
The extended nose modification is FAA-certified and owned by SNC. It allows for the installation of a fully retractable 15-inch EO/IR sensor, compatible with existing equipment. The modification does not alter the aircraft's weight and center of gravity limitations compared to the OEM configuration.
Meeting Critical ISR Needs
The STC includes a 3-foot structural modification that enables the installation of an electromechanical lift mechanism for the EO/IR sensor. This allows the sensor to be deployed and retracted in flight without affecting the aircraft's flight characteristics, providing a low-visibility profile when stowed.
Extended Nose Benefits
The modification offers several advantages, including a retractable sensor for a low-visibility profile, improved sensor field of view with less wing obstruction, and additional space in the fuselage. The sensor can be deployed or retracted in less than 20 seconds and is easily accessible for maintenance.
Safety notes
- Exports, sales, and offerings of the products and technology discussed are subject to U.S. Government approval.
Full document text
Sierra Nevada Corporation (SNC) has modified, certified and deployed multiple B200, 300 and 350 King Airs in support of numerous customers with a variety of mission requirements. SNC takes an innovative approach to systems integration, resulting in King Air platform modifications that allow significant flexibility for a range of uses. King Air Nose Extension & EO/IR Lift Extended Nose Features • Federal Aviation Administration-Certified & SNC-owned STC • Compartment can accommodate fully retractable 15-inch EO/IR Sensor • Installation compatible with existing equipment • The aircraft weight & center of gravity limitations remain the same as the Original Equipment Manufacturer (OEM) configuration • Large service door with access to sensor, lift & cable connectors Meeting Critical ISR Needs SNC’s Supplemental Type Certificate (STC) for the King Air series nose extension includes a 3-foot structural modification, allowing for the installation of an electromechanical lift mechanism and mount for a commercial 15-inch, electro-optical/infrared (EO/IR) sensor or similar size device. This modification allows the sensor to be deployed and retracted in flight without altering the aircraft’s flight characteristics. While on the ground, the sensor is stowed providing a “low-visibility” profile of the aircraft and sensor package. Extended Nose Benefits • Retractable sensor - Provides low-visibility profile of the aircraft & sensor package • Better sensor field of view - Less wing obstruction • Extra space - Nose mount frees up fuselage space • Fast deployment of sensor - Deploys/Retracts in less than 20 seconds • Easy to maintain - Easy access to service or change the sensor type • Secure storage - Sensor is secured while parked at public/unsecured airfields King Air Nose Extension & EO/IR Lift Extended nose with EO/IR Camera in Operational Mode Extended nose with EO/IR camera stowed 18635 Jarkey Drive | Hagerstown, MD 21742 | Phone: (301) 665-1294 | Email: mst@sncorp.com | Website: sncorp.com 9/21/2022 DATA CONTAINED WITHIN THIS DOCUMENT ARE SUBJECT TO CHANGE AT ANY TIME AT SNC’S DISCRETION | Sierra Nevada Corporation and SNC are trademarks of Sierra Nevada Corporation | ©2022 Sierra Nevada Corporation Warning - Exports, sales, and offerings of the products and technology discussed herein are subject to U.S. Government approval.



