Jaquith Industries
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VEGA Quick Links: Airport Hardware / LIR Fiberglass Mast / FAM Aluminum Mast / Specialty Products / Resources
The Fiberglass Frangible Approach Mast was developed by the Federal Aviation Administration as a Low Impact Resistant (L.I.R.) support structure for high intensity (ALSF2) approach systems from 6 ft. to 128 ft. The essential function is to provide frangible support for equipment installed in the clear zone. In 1979 Jaquith Industries received a government contract as the lead manufacturer to develop the LIR Fiberglass Frangible Mast. Since then, Jaquith has expanded the role of the LIR Mast to include a variety of other applications. 
LIR is defined as a break-away mast for use in structures that support airport approach lighting & support systems. The LIR design will withstand 100 mph winds without ice and 75 mph winds with a 1/2 inch radial ice load. Yet, should an aircraft slip below the glide slope and impact a support structure, the structure breaks into pieces without catastrophic damage to the wing support. 
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Masts Are Available In Any Height From 6' to over 40'
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6ft to 21.1ft
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21.2ft to 40ft
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Heights Exceeding 40ft

Masts Are Easily Lowered For Maintenance & Repair
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The Portable Tilt Device can be easily transported to each location
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Mast as tall as 40' can then be lowered for service with as little as one person
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Ground level access to mast & fixture allows for easy maintenance & repair

Mast Are Durable, Yet Collapse When Struck

Weather, Temp, UV, & Corrosion Resistant ​

Rated for 100 mph or
75 mph with 1/2" ice 


Multiple Break Points
​ Ensure Frangibility​
Jaquith's Low Impact Resistant Fiberglass Frangible Mast supports a wide variety of equipment from approach lighting, to weather, radar systems, and more. The LIR Mast is able to rigidly withstand winds of 100 mph, while maintaining frangibility should an aircraft strike the mast.  The masts lightweight fiberglass construction is extremely resistant to UV, temperature, weather, and corrosion, while requiring little to no maintenance throughout its life cycle. Should maintenance be required, the mast can be lowered to ground level with as little as one person. 

Technical Info:

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Ordering
  • LIR Option Sheet
  • Structure Configurations
Installation
  • LIR Mast Installation Guide
LIR Mast Drawings
  • T-M Assembly
  • T-3 Assembly
  • T-4 Assembly
  • T-5 Assembly
  • Tube Cap Assembly
  • Tee Brace Assembly
  • Tee Brace Clamp Assembly
  • LIR Tubes & Tube Splices
Ms-20 Mast Drawings
  • Mounting Socket Assembly
  • Mast Lifting Frame Assembly
  • Mast Lifting Fame Sub Assembly
  • Mast Lifting Frame Details ​
Foundation Drawings
  • Foundation Drawings with Fuse Bolts
  • ​Foundation Drawings without Fuse Bolts
Info & Certs
  • AC150/5345-45C ETL Certification LIR Mast
  • AC150/5220-23 Advisory Circular Frangible Connections
  • Lowering & Raising LIR Mast
  • FAA Advisory Circular Engineering Brief 79
  • US Air force Frangibility Guidelines
Buy America Program
  • JI Buy America Waiver
View More Online Resources

Ordering Guide:

1) Select Mast Type
Masts for ground application are available from 6ft (1.83m) to 40ft (12.19m)
2) Select Mast Height
Specify height to the nearest inch from the top of the foundation to the centerline of the luminaire
3) Select Interface
Select manufacturer and size of luminaire or top cap interface - All FAA & Calvert Light configurations available 
  • LIR Accessories
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VEGA Low Impact Resistant Fiberglass Mast Accessories 
Jaquith Industries is continually working with industry partners to develop new airfield technologies. If you cannot find what you're looking for, the Engineering Team at Jaquith Industries stands ready to develop an appropriate accessory to fit your needs! 
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LIR Mast ​Portable Lifting Device​
L5005 Lifting Device
L5005R
Adjustable Maintenance 
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L5016
Flasher Bracket with Junction Box
L5017 Flasher Bracket w/ Junction Box
L5017
Flasher Bracket with Junction Box
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L5017FT
T-1 Crossbar & Junction Box
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L5000

Frangible Mount Fuse Bolts
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L5023 - L5024 & L5026
MG30/40 Anchor Bolt Setting Jig 
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L5027
LIR Fiberglass Mast Epoxy Kit
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L5008
LIR Mast Tube Splice Repair Kit​
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L9149
MG20 & Threaded Stand Plate
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L2763DME

Anchor Bolts 
​MG-20,30,40
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L5002
Anchor Plates
​MG-20,30,40
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L5004
MALS Aluminum 
​Junction Box
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L5018
Aluminum
​Swivel Joint
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L9150
Adjustable Hinge
​Angle Kit
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L5015

LIR Paint Kit 
​For Field Painting
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Paint Kit
ASDE X Mount
​L2802 Top Cap
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ASDE X Mounts

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Jaquith Industries Inc. - 600 East Brighton Avenue Syracuse New York - (315) 478 5700

Jaquith Quick Links:

VEGA Airport Lighting
Airport Hardware
LIR Fiberglass Mast
FAM Aluminum Mast
Specialty Masts
VEGA Resources
BMF Metal Forms
BMF Metal Forms
BMF Custom Forms
BMF Accessories
BMF Ordering Guide
BMF Installation Guide
Contract Fabrication
Custom Contract Fabrication
Services List
Equipment List
Product Resources
VEGA Product Resources
News & Information
Jaquith News
VEGA Image Gallery
BMF Image Gallery
Custom  Image Gallery
Website Resources
Privacy Policy
Website Disclaimer
Employee Portal
Buy America
FAA Buy American Waiver
DOT Buy America Program
Other Helpful Links:
The FAA
IES Aviation Lighting Committee
Canadian Airport Electrical Association
State DOT Airport Links
© 2021  Jaquith Industries, Inc. All Rights Reserved
  • Home
  • Vega Airport Lighting
    • Airport Hardware
    • L.I.R Fiberglass Mast
    • F.A.M Aluminum Mast
    • Specialty Mast & Tower
    • VEGA Lighting Resources
  • BMF Metal Forms
  • Custom Contract Fabrication
  • Employment Opportunities
  • News & Information
  • Contact Us