Related Manuals for MSA LH 350
Summary of Contents for MSA LH 350
- Page 1 CONFIDENTIAL INDUSTRY MAINTENANCE MANUAL LH 350 FLIGHT HELMET Ref : 180722 – PP0200175 ind00 1/18...
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Page 2: Table Of Contents
CONFIDENTIAL INDUSTRY Table of Contents Topic Page Table of Contents 2/19 WARNING 3/19 DESCRIPTION OF HELMET 4/19 GUARANTEE 5/19 PREAMBLE 6/19 CHINSTRAP 7/19 CLOTHING 8/19 OUTER VISOR 9/19 INNER VISOR 10/19 NVG HARD COVER 11/19 THE INNER IMPACT CAP 12 and 13/19 NECK PAD 14/19 ACCESS TO ELECTRONIC CARD... -
Page 3: Warning
MSA of any liability. In an ongoing effort to improve its products, MSA hereby reserves the right to alter them at no notice. To guarantee sufficient protection, the helmet must be adapted and adjusted to the wearer’s head size. -
Page 4: Description Of Helmet
Serial Number, Helmet Log Card and Modification Record. Every MSA flight helmet is supplied with a helmet log card recording the manufacturing and model details of the helmet, in addition to recording modifications and Level 3 repairs to the helmet. -
Page 5: Guarantee
All of our models, accessories, and spare parts are meticulously inspected before leaving the factory. MSA helmets and their options are guaranteed for one year from the date of purchase. Guarantee provides for parts and labor repair or replacement of the helmet and components arising from any mechanical or electrical failure or defect which may occur during normal operating conditions as described in the helmet Instruction Manual supplied with each helmet. -
Page 6: Preamble
CONFIDENTIAL INDUSTRY PREAMBLE Important : for any repair install the helmet at least on the helmet protecting bag Necessary tools : - 20, 15 and 10 TORX key - 7 mm combination wrench - 2 mm hexagonal screw driver - Flat blade screwdriver - Threadlocking low strength (LOCTITE 222 or equivalent ) Ref : 180722 –... -
Page 7: Chinstrap
CONFIDENTIAL INDUSTRY 1. Chinstrap: Tools: 20 and 15 TORX keys, 7 mm combination wrench and flat blade screwdriver. Dismantling duration: 1 minute. Mounting duration: 2 minutes. Open the chinstrap. 20 TORX key 7 mm combination wrench Inside detail 15 TORX key Inside detail 4 points chinstrap disassembly Left and right chinstrap dismantle:... -
Page 8: Clothing
CONFIDENTIAL INDUSTRY 2. Clothing: Tools: none. Dismantling duration: 20 seconds. Mounting duration: 45 seconds. LH 350 helmet includes 2 comfort parts and spacers: • 1 adjustable, comfortable T-shaped spacer with 4 mm, thick foam, 8mm and 12mm • neck spacer with 4 mm,... -
Page 9: Outer Visor
CONFIDENTIAL INDUSTRY 3. Outer visor : Tools : none. Dismantling duration: 2 minutes. Mounting duration: 2 minutes. Unscrew the 2 captive screws on the right and left sides. Raised the hard cover by rotating back side the hinge. hinge Remove the outer visor by sliding outside the hard cover Proceed in the reverse order to reassemble. -
Page 10: Inner Visor
CONFIDENTIAL INDUSTRY 4. Inner visor : Tools : none. Dismantling duration: 2 minutes. Mounting duration: 2 minutes. Lower the inner visor Unscrew the 2 captive screws on the right and left sides. Raised the hard cover by rotating back side the hinge hinge base cover 1- Open the left and right base covers by rotating upwards... -
Page 11: Nvg Hard Cover
CONFIDENTIAL INDUSTRY 5. NVG hard cover : Tools : 2 mm ALEN screw driver. Dismantling duration: 2 minutes. Mounting duration: 3 minutes. Unscrew the 2 captive screws on the right and left sides Unscrew the 2 ALEN screws on the hinge. Proceed in the reverse order to reassemble. -
Page 12: The Inner Impact Cap
CONFIDENTIAL INDUSTRY 6. The inner impact cap: Tools : 15 TORX key Dismantling duration: 5 minutes. Mounting duration: 8 minutes. To dismantle the inner cap : remove all the comfort parts (T spacer, neck spacer), remove the two ear cups, dismantle the chinstrap (see chap. - Page 13 CONFIDENTIAL INDUSTRY Pull the rear side of the inner impact cap to release the inner cap of the shell Then pull the front part of the inner cap Proceed in the reverse order to reassemble. Warning for neck pad mounting see § 7. Ref : 180722 –...
- Page 14 CONFIDENTIAL INDUSTRY 7. Neck pad mounting : Tools: 2 mm ALEN screw driver, Mounting duration: 1 minutes. Outside the shell, partly unscrew the 4 screws with 2 mm ALEN screw driver. Inside the shell : insert the 2 clamps of the neck pad in the electronic card support seating.
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Page 15: Access To Electronic Card
CONFIDENTIAL INDUSTRY 8. Access to the electronic card: Tools: 2 mm ALEN screw driver, 15 TORX key Dismantling duration: 3 minutes. Mounting duration: 4 minutes. Unscrew the 4 screws with 2 mm ALEN screw driver Remove the cover to have access to the electronic card Unplug the cable plug on the card. -
Page 16: Electronic Card
CONFIDENTIAL INDUSTRY 9. Electronic card Tools : flat blade screwdriver Dismantling duration: 1 minute. Mounting duration: 2 minutes. See § 8 for access to electronic card. Unplug the 3 JST plugs Left earphone Right earphone Microphone. Left Right Microphone earphone earphone Pull out the card with the flat blade screwdriver... -
Page 17: Inspection Verification And Maintenance Requirements
CONFIDENTIAL INDUSTRY 10. Inspection, Verification and Maintenance Requirements. The MSA range of flight helmets is designed as a modular solution to meet the requirements of helicopters pilots and crew members. The helmet is designed to require minimal maintenance intervention and recommended servicing or repair is on an ‘ON CONDITION BASIS’. -
Page 18: Mandatory Inspection And Replacement Criteria
Failure to withdraw a damaged helmet shell from operational use will relieve MSA from any liability in the event of helmet failure.
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