AS350/AS355 Bear Paw, Kit Installation Instructions

AIRBUS AS350 B3 · Checklist

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Overview

This document provides installation instructions for the AS350/AS355 Bear Paw Kit, which enhances the stability of the aircraft during landings on soft terrain. It includes detailed steps for installation and removal, as well as weight and balance information.

Applicable to all AS350 (H125) & AS355 serial numbers.
The Bear Paw Kit increases stability and reduces tail rotor strike risk.
Installation requires thread-locker on fasteners.
Weight of Bear Paw Kit is 17.20 lbs or 15.52 lbs depending on configuration.
Installation instructions include steps for both OEM and Dart skid tubes.
General inspection is required after installation and removal.
Decals must be installed in visible locations on the instrument panel.

Document

Source

Originally published by alpineaerotech.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

View original at alpineaerotech.com

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Document details

Type: Checklist
Year: 2024
File size: 410 KB
Publisher: alpineaerotech.com
Language: en

Specifications & performance

Extracted from this document.

Specifications

Bear paw kit weight kg: 7.80
Bear paw kit weight (lb): 17.20
Bear paw kit weight kg alternate: 7.04
Bear paw kit weight lbs alternate: 15.52

Weight & balance

Lateral arm (in): .00
Longitudinal arm (in): 158.82
Lateral arm inches alternate: .00
Longitudinal arm inches alternate: 158.58

About this document

What is the AS350/AS355 Bear Paw, Kit Installation Instructions?

The AS350/AS355 Bear Paw, Kit Installation Instructions is a checklist for the AIRBUS AS350 B3, dated 2024.

Where does the AS350/AS355 Bear Paw, Kit Installation Instructions come from?

This copy of the AS350/AS355 Bear Paw, Kit Installation Instructions was originally published by alpineaerotech.com and is hosted on Sprinkle as a free, searchable reference copy.

What year was the AS350/AS355 Bear Paw, Kit Installation Instructions published?

The AS350/AS355 Bear Paw, Kit Installation Instructions — the AIRBUS AS350 B3 checklist on file — is dated 2024.

Documentation completeness

4/7

Most owners only have the POH. Here's the essential set for the AIRBUS AS350 B3.

Pilot's Operating Handbook / AFM
Checklist
Maintenance Manual
Parts Catalog (IPC)
Systems & Wiring
Service Bulletins on file
Type Certificate (TCDS)

More AIRBUS AS350 B3manuals & documents

In this document

Description

The Bear Paw Kit provides additional flotation to the skid gear, enhancing stability during landings on soft terrain.

Installation & Removal Instructions

Detailed steps for installing and removing the Bear Paw Kit, applicable to both OEM and Dart skid tubes.

Weight & Balance

The document provides weight and arm information for the Bear Paw Kit, essential for maintaining proper aircraft balance.

Installation Instructions – Common

General installation steps including the application of thread-locker and torque specifications.

Installation Instructions – OEM Skid Tube

Specific steps for installing the Bear Paw Kit on OEM skid tubes, including hardware orientation and torque requirements.

Removal Instructions

The removal process is straightforward and mirrors the installation steps, requiring a general inspection afterward.

Safety notes

Ensure thread-locker is applied to all Gripper fasteners to maintain airworthiness.
Do not apply final torque to fasteners while the aircraft is raised off the ground.
Perform a general inspection after installation and removal.

Full document text

www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 1 of 12 AS350/AS355 BEAR PAW, KIT INSTALLATION INSTRUCTIONS MODELS: AIRBUS AS350 SERIES (H125) & AS355 Read all of the Installation Instructions thoroughly prior to performing any activities relating to this product www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 2 of 12 Table of Contents Section Description Page 1 Description 2 2 Installation & Removal Instructions 3 Applicability 3 Installation Instructions – OEM Skid Gear 6 Installation Instructions – Dart Skid Gear 10 Removal Instructions 12 Notes 1. If changes to this document are required, Alpine Aerotech LP shall revise all pages and reissue the entire document. 2. Alpine Aerotech LP shall make any subsequent revisions of this document available free of charge upon request. Alpine Aerotech LP also recommends that the end user of this product periodically verify the revision level of this document. SECTION 1 Description The following information provides a functional description of the AS350/AS355 Bear Paw, Kit as defined in Alpine Aerotech LP authority dataset AAL-390-030-001. In soft terrain landing situations (i.e. tundra, snow and sand) where the skid tubes can sink into the landing area, balancing issues can occur and in rare cases the tail rotor can come in contact the ground. When installed, the Bear Paw, Kit provides additional flotation to the skid gear AFT of the aircraft’s C of G, therefore increasing stability and decreasing the potential of a tail rotor strike. www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 3 of 12 SECTION 2 Installation & Removal Instructions Applicability The AS350/AS355 Bear Paw, Kit (AAL-390-030-001) is applicable to all AS350 (H125) & AS355 serial numbers. Weight & Balance Part Number Description Weight Long. Arm Lat. Arm AAL-390-030-001 Bear Paw, Kit † 17.20* 158.82 .00 7.80 (Kg) 4034 (mm) .00 (mm) AAL-390-030-001 Bear Paw, Kit ‡ 15.52* 158.58 .00 7.04 (Kg) 4028 (mm) .00 (mm) † Applicable to installations with Grippers (Item 2) and associated hardware ‡ Applicable to installations without Grippers (Item 2) and associated hardware * Total increase in weight to aircraft. General Notes 1. All Installation Instructions shall be accomplished in accordance with (IAW) standard aircraft practices. Refer to the current revision of the FAA Advisory Circular AC 43.13-1 and AC 43.13- 2 for details on standard aircraft practices. 2. Torque fasteners IAW the tension type torque limits indicated in the current revision of the FAA Advisory Circular AC 43.13-1, Table 7-1 unless otherwise specified. 3. All Dimensions are in imperial measures (inches/pounds). 4. Refer to ICA Section 3: Maintenance Manual Supplement for instructions on maintenance for the item(s) referenced within this section. 5. Refer to ICA Section 6: Illustrated Parts Breakdown for the part numbers of the item(s) referenced within this section. Installation Notes Typical item number for all like items in this view unless otherwise specified. Apply Thread-locker (Item 18) to threads IAW manufacturer’s recommendations (prior to torquing fastener). Torque to 30-35 INCH LBS. 1 2 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 4 of 12 Installation Instructions – Common 1. Install the Grippers (Item 2) and supplied hardware on the Bear Paw, Detail (Item 1) as shown. Ensure all serrated surfaces on the Grippers are facing down (serrations must be common to the ground). Ensure Thread-locker (Item 18) is applied (mandatory). Torque all Gripper fasteners IAW General Note 2. Reference Figure 1. NOTE: Installation of Grippers (Item 2) and associated hardware is optional. If Grippers are desired, all Grippers (8X) and associated hardware must be installed. Use applicable Weight & Balance information provided. If Grippers are not desired, all Grippers (8X) and associated hardware must be removed. Use applicable Weight & Balance information provided. Ensure Thread-locker (Item 18) is sufficiently applied to all Gripper fasteners. Omitting Thread-locker is not acceptable and will create a non-airworthy installation. Figure 1 Typical Gripper Installation CAUTION 1 2 2 4 2 3 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 5 of 12 Installation Instructions – Common 2. Install the supplied hardware on the Bear Paw, Detail (Item 1) as shown. Reference Figure 2. Figure 2 Typical Hardware Installation 6 1 8 1 9 7 1 1 1 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 6 of 12 Installation Instructions – OEM Skid Tube 1. Gain access to the aircraft and make the aircraft safe and ready for maintenance. 2. Raise the aircraft and remove the spring blade and associated fasteners. Install the Spacer, Detail (Item 13) between the spring blade and its associated fitting using the provided Bolt, Details (Item 14) and the associated nuts (Item 15). Re-use the existing washers. Reference Figure 3. Figure 3 Spacer, Detail (Item 13) OEM Installation shown 15 1 13 14 OEM SKID TUBE REF UP OUTBD ISOMETRIC VIEW LHS INSTALLATION SHOWN FWD

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SPRING BLADE REF RE-USE EXISTING 2X 1 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 7 of 12 Installation Instructions – OEM Skid Tube 3. While the aircraft is raised, position the Bear Paw, Detail (Item 1) under the skid tube. Reference Figure 4. Figure 4 LHS Shown, RHS Opposite 4. Once the Bear Paw, Detail (Item 1) is under the skid tube in its approximate location, place the Strap, Assys (Item 10) and their respective Cap, Details (Item 11) on their corresponding bolts. Reference Figure 4. NOTE: Ensure the Aft-most Strap, Assy (Item 10) and associated Cap, Detail (Item 11) are positioned between the cross-tube saddle fitting and the existing bolt at the aft end of the skid tube. Reference Figure 4. 9 1 10 1 12 UP OUTBD ISOMETRIC VIEW INSTALLATION SHOWN FWD OEM SKID TUBE REF 11 1 1 1 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 8 of 12 Installation Instructions – OEM Skid Tube 5. Install the supplied Radius Washer (Item 12) and Nut (Item 9) on each bolt. Reference Figure 5. Ensure the radius edge on the Washer (Item 12) is oriented down and towards the skid tube. Reference Figure 5. A thin-wall socket may be required to adequately fasten the Nut (Item 9). NOTE: Do not apply final torque to the fasteners at this stage while the aircraft is raised off the ground. Only apply minimal torque to snug-up the Bear Paw, Detail (Item 1). You should be able to slide the Bear Paw forward and aft by hand. Figure 5 Hardware Orientation Shown 6. Lower the aircraft onto the Bear Paw, Details (Item 1). After ensuring sufficient clearance between the Bear Paw, Details and the spring blade, torque the fasteners equally to 40 in/lbs. Reference Figure 4. 9 12 10 RADIUS EDGE DOWN www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 9 of 12 Installation Instructions – OEM Skid Tube 7. Install the Decal, Detail (Item 16) in a highly visible location on the instrument panel. Reference Figure 6. Figure 6 Decal, Detail shown 8. If installing on an AS355, install the Decal, Detail (Item 17) in a highly visible location on the instrument panel. Reference Figure 7. Figure 7 Decal, Detail shown (AS355 only) 9. Installation complete. 10. Perform a General Inspection of all items to ensure proper installation. 11. Update the aircraft logbook for the installation of the AS350/AS355 Bear Paw, Kit. 16 17 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 10 of 12 Installation Instructions – Dart Skid Tube 1. All installation procedures associated to Dart skid tubes are the same as OEM skid tubes except for the following. Reference OEM Skid Tube Installation Steps 1 through 9. Figure 8 Spacer, Detail (Item 13) Dart Installation shown 2. Raise the aircraft and remove the spring blade and associated fasteners. Install the Spacer, Detail (Item 13) between the spring blade and its associated fitting using the provided Bolts (Item 5). Re-use the existing washers and nuts. Reference Figure 8. 13 1 DART SKID TUBE REF 5 RE-USE EXISTING 4X RE-USE EXISTING UP OUTBD ISOMETRIC VIEW LHS INSTALLATION SHOWN FWD SPRING BLADE REF 1 www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 11 of 12 Installation Instructions – Dart Skid Tube 3. Installation complete. 4. Perform a General Inspection of all items to ensure proper installation. 5. Update the aircraft logbook for the installation of the AS350/AS355 Bear Paw, Kit. www.alpineaerotech.com 1260 Industrial Road, West Kelowna, B.C., Canada V1Z 1G5 Phone: (250) 769-6344 Fax: (250) 769-6303 info@alpineaerotech.com Revision: B Date: 2024-02-20 Doc. No.: AAL-390-035-001 Page 12 of 12 Removal Instructions 1. As there are no special considerations or additional steps to remove the AS350/AS355 Bear Paw, Kit for either inspections, or mission configuration, the removal of the AS350/AS355 Bear Paw, Kit can be considered the opposite of installation. 2. Perform a General Inspection of all items to ensure proper removal. 3. Update the aircraft logbook for the removal of the Bear Paw, Kit.

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