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Airglas GLH3000 Nose Ski Instructions For Continued Airworthiness

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Airglas, Inc.
Instructions for Continued Airworthiness
Including
Installation, Maintenance and Service Instructions
MANUAL NO. LH4000-GA8-105
GLH3000 Nose Ski and LH4000 Main Ski
For
GA8 Series Airplanes
Cage Code 17564
Airglas Inc.
®
MANUAL REVISION (B)
December 12, 2018
Airglas, Inc.
THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO
AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR
Airglas, Inc.
ASSEMBLY WITHOUT THE PRIOR WRITTEN PERMISSION OF

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Summary of Contents for Airglas GLH3000 Nose Ski

  • Page 1 Airglas, Inc. Instructions for Continued Airworthiness Including Installation, Maintenance and Service Instructions MANUAL NO. LH4000-GA8-105 GLH3000 Nose Ski and LH4000 Main Ski GA8 Series Airplanes Cage Code 17564 Airglas Inc. ® MANUAL REVISION (B) December 12, 2018 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc.
  • Page 2 Airglas, Inc. Manual # LH4000-GA8-105 Record of Revision Revision Date Affected Approved Description of Revision Pages Original 9/23/17 Clifford D. Belleau Original Document 3/12/18 Thomas Lawhorn Installation procedures finalized 12/12/18 Jim Hammer Clarification added Distribution of Changes Airglas, Inc. A copy of the revised manual or affected pages will be maintained on the website.
  • Page 3 Airglas, Inc. Manual # LH4000-GA8-105 Airworthiness Limitations "The Airworthiness Limitations section is FAA approved and specifies maintenance required under Sections 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved." Limitations: None P a g e...

  • Page 4: Table Of Contents

    Airglas, Inc. Manual # LH4000-GA8-105 Table of Contents Page 1.0 Introduction and Description 2.0 Control and Operation 3.0 Placards and Markings 4.0 Initial Installation 5.0 Removal 6.0 Reinstallation 7.0 Servicing Information 8.0 Instructions for Continued Airworthiness 12-13 9.0 Specifications 10.0 Trouble Shooting 11.0 Drawings and Diagrams...

  • Page 5: Control And Operation

    “straight ski”. The simplicity of this design allows for a low maintenance high performance ski kit. This is a design that Airglas, Inc. started in 2004, using the LH4000 installation on Cessna 180/185 aircraft.

  • Page 6: Placards And Markings

    Markings and Placards: The airspeed indicator is marked as follows: o The red radial line is located at 169 MPH. DO NOT EXCEED 169 MPH IAS WITH AIRGLAS SKIS INSTALLED P a g e MANUAL REVISION (B) December 12, 2018 Airglas, Inc.

  • Page 7: Initial Installation

    Airglas, Inc. Manual # LH4000-GA8-105 Place Airspeed Restriction Placard on instrument panel immediately adjacent to Airspeed Indicator and in full view of pilot. SKIS LOCKED DOWN IN TRANSIT TO SKIS GREEN LEDs HERE NOSE MAIN YELLOW LEDs HERE IN TRANSIT TO WHEELS...
  • Page 8 Airglas, Inc. Manual # LH4000-GA8-105 Note: 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 noted. Fluid lines shall be torqued IAW AC 43.13-1B Chapter 9, Par 9- 30, Table 9-2.
  • Page 9 Airglas, Inc. Manual # LH4000-GA8-105 3. Remove the bracket and drill the spot locations with a sharp #30 drill bit. Lay out the two additional fastener locations using detail A. Pilot drill them using the #30 drill bit and then increase the fastener holes in the bracket using the #9 drill bit.
  • Page 10 Airglas, Inc. Manual # LH4000-GA8-105 the contour of the fuselage and maintain hole edge distance. Install the bracket using an AN525-10R10 screw and MS21044N3 nut with one NAS1149F0363P washer on the back side, the shim part# LH4000GA8-9-1S goes under the lower 2 holes and tight to the skin lap. It can be held in place with double face tape until all the holes have been drilled.
  • Page 11 Airglas, Inc. Manual # LH4000-GA8-105 8. Remove the bracket and drill the spot locations with a sharp #30 drill bit. Lay out the three additional fastener locations. Pilot drill them using the #30 drill bit and then increase the fastener holes in the bracket using the #9 drill bit. Deburr the holes.
  • Page 12 Airglas, Inc. Manual # LH4000-GA8-105 11. Remove the bracket and drill the spot locations with a sharp #30 drill bit. Lay out the two additional fastener locations using detail A. pilot drill them using the #30 drill bit and then increase the fastener holes in the bracket using the #9 drill bit.
  • Page 13 Airglas, Inc. Manual # LH4000-GA8-105 13 | P a g e MANUAL REVISION (B) December 12, 2018 Airglas, Inc. THIS MANUAL INCLUDES INFORMATION PROPRIETARY TO AND SHALL NOT BE USED TO MANUFACTURE OR REPRODUCE ANY PART OR Airglas, Inc. ASSEMBLY WITHOUT THE PRIOR WRITTEN PERMISSION OF...
  • Page 14 Airglas, Inc. Manual # LH4000-GA8-105 2. Locate the third leading edge rib outboard at WS 23.5. Install doubler LH4000-GA8-9-3. Carefully Cleco the doubler in place using the exist tooling hole in the wing rib. Rotate the doubler until it nests between the leading edge flange and the spar flange on the rib. If the doubler does not ride flush against the rib web, carefully trim the doubler until it rides flush.
  • Page 15 Airglas, Inc. Manual # LH4000-GA8-105 MAIN SKI ATTACHMENT 1. The aircraft will need to be hoisted or jacked. Use caution and jack IAW chapter 7-10-00 of the appropriate GippsAero service manual. 2. Remove the two AN5-23A bolts holding the main landing gear axle onto the main gear leg.
  • Page 16 Airglas, Inc. Manual # LH4000-GA8-105 NOSE SKI ATTACHMENT 1. The aircraft will need to be hoisted or jacked to install the nose ski. Use caution and jack IAW chapter 7-10-00 of the appropriate GippsAero service manual. 2. Referencing drawing PA32-206LA, remove the AN365-524 nuts, washers, PA32-206L-5 spacers, PA32-206L-4 axle rod and PA32-206L-6 buckets from the nose fork.
  • Page 17 Airglas, Inc. Manual # LH4000-GA8-105 stop off the rigger bracket on the left hand side. Hoist the nose ski clear of the ground and confirm nose ski tip up angle is no greater than +3.5˚ with the ski in the retracted position (tire protruding).
  • Page 18 Airglas, Inc. Manual # LH4000-GA8-105 4. Drill a .125” diameter drain hole in the fuselage belly just aft of F.S. 182.79. 5. Install the pressure switches and hydraulic fittings on the pumps and install the pumps in the aircraft IAW drawing LH4000-GA8-HYD. One pump is used for the main skis and one is used for the nose ski.
  • Page 19 Airglas, Inc. Manual # LH4000-GA8-105 13. Connect the main ski hoses IAW drawing LH4000-GA8-HYD schematic 2 with the hoses from tubes 3 connected to the forward ski hydraulic fittings, and tube 4 to the aft fitting. Secure the hoses with friction tape and cushioned clamps as shown in photo 2.

  • Page 20: Removal

    Airglas, Inc. Manual # LH4000-GA8-105 3. With external power applied to the aircraft, select skis and ensure deployment of all three skis. Confirm transit to skis lights illuminate while pumps are running. Confirm that skis locked lights illuminate when skis reach full deployment and pumps stop. Deployment will take approximately 90 seconds.

  • Page 21: Reinstallation

    Airglas, Inc. Manual # LH4000-GA8-105 1. Hoist or jack the aircraft. 2. Disconnect and cap all hydraulic lines and fittings. 3. Remove the rigger, safety, and check cables from the GLH3000-NG-LR1-1 and -2 rigger attach brackets. 4. With a helper, rotate the left hand rigger aft and downward while lifting the ski to reduce the tension on the bungee.
  • Page 22 Airglas, Inc. Manual # LH4000-GA8-105 5. Install the GLH3000-NG-LR2-1 AND -2 rigger brackets using the GLH3000-NG-LR1-3 straps IAW drawing LH4000-GA8 sheet 4. Install the brackets using four AN6-23A bolts, MS21044N6 nuts. 6. Slide the nose ski beneath the tire. The rod ends on the yoke can next be bolted to the PA32- 206L-6-GLH buckets with two AN6H25A bolts.

  • Page 23: Servicing Information

    Airglas, Inc. Manual # LH4000-GA8-105 7. Servicing Information Mechanical System Nose Ski–The nose skis are virtually maintenance free with the top of the ski constructed of carbon fiber, and fiber glass and the bottom of the ski is Ultra High Molecular Weight poly-ethylene (UHMW).

  • Page 24: Instructions For Continued Airworthiness

    Airglas, Inc. Manual # LH4000-GA8-105 The Tail Wheel Bracket Kit (LH3600A-12) is made of stainless steel angled brackets with two 6” aluminum wheels with solid urethane tires. The cartridge wheel bearings are sealed and require no servicing. Replace tire if less than .25” thickness remains. Replace cartridge bearings if worn.
  • Page 25 Airglas, Inc. Manual # LH4000-GA8-105 6. CHECK – Tire pressures are 35 psi. INSPECTION CRITERIA 100/Annual (100 hour or Annual inspection interval) In addition to the daily preflight check above: 1. INSPECT – The LH4000-GA8 ski kit for: Cracks, wear, fractures and abrasions. Inspect the bottom for cracks, scratches, delamination, and excess wear.
  • Page 26 Airglas, Inc. Manual # LH4000-GA8-105 9. INSPECT – The operation of the ski system. Confirm full deployment and retraction of both main and nose skis. Confirm operation and position locked indicator lights are functional and accurate. (Allow adequate clearance for the aircraft while performing operational checks) Check fluid level at the reservoirs with the ski retracted (tires protruding).
  • Page 27 Airglas, Inc. Manual # LH4000-GA8-105 Problem: Skis try to dive in flight. Correction: Skis are rigged at too low angle of attack, or bungees are deteriorated. 27 | P a g e MANUAL REVISION (B) December 12, 2018 Airglas, Inc.
  • Page 28 Flight Manual Supplement LH4000-GA8-AFMS Hydraulic System LH4000-GA8-HYD Electrical Schematic GLH3000-GA8-7 Current drawings and manuals are available on the Airglas, Inc. website www.airglas.com Always use the current manual or drawing. — END — 28 | P a g e MANUAL REVISION (B) December 12, 2018 Airglas, Inc.

This manual is also suitable for:

Lh4000 main ski