Airglas, Inc.
Manual # LH4000-106
6 |
P a g e
MANUAL REVISION B
December 3, 2012
THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO
Airglas, Inc.
AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR
ASSEMBLY WITHOUT THE PRIOR WRITTEN PERMISSION OF
Airglas, Inc.
1.0 INTRODUCTION AND DESCRIPTION
Introduction
: Since1955
Airglas, Inc.
has designed and manufactured a full line of composite
skis that dramatically increase the usefulness of the aircraft by allowing it to operate on snow or
frozen surfaces.
The installation of the LH4000 hydraulic wheel ski kit allows the aircraft to operate
on paved or hard surfaces, and snow. The skis are actuated by a hydraulic cylinder on each ski with
an electric/hydraulic or hand pump to provide operating pressure. The ski is pushed down as a sliding
door closes the opening in the ski and causes the tire to ride up on top of the door. The door closes
off the wheel opening, thus creating the performance characteristics of a “straight ski”. When the
airplane is on snow, deploying to the ski position dramatically improves the takeoff performance
(compared to wheel penetration skis). The simplicity of this design allows for a low maintenance high
performance ski kit.
Description
: The LH4000 ski kit consists of essentially 4 systems;
1. The Mechanical System
– This includes the ski with all attaching hardware (interface to the
gear leg) and the rigging components.
2. The Hydraulic System
– This includes hydraulic lines (both onboard and external), hydraulic
actuating cylinders (on the skis), all the hydraulic fittings on the skis, and the hydraulic pump.
3. The Electrical System
– This includes pressure switches, a circuit breaker, wiring, a control
switch and indicator lights (the electric pump is covered under the hydraulic system).
4. Placards and Markings-
This includes the flight manual supplement, placards, and instrument
markings.
Instructions for initial installation of this kit are detailed within manual LH4000-105.
Notes:
1.
All hardware in this kit shall be installed and torqued IAW AC 43.13-1B Chapter 7, Par 7-40,
Table 7-1 and table 7-2, unless otherwise specified.
2.
Aircraft must be equipped with 8.50x6 main tires for ski operations.
1.1 SKI RIGGING BRACKETS AND ATTACH FITTINGS
The aircraft must have the brackets and attach fittings installed on the fuselage for the rigging to
attach.
