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Parts Information


  • Windshields, Windows and Lenses are FAA/PMA Approved where required unless otherwise noted.

  • Parts are trimmed as close as aircraft variation allows.

  • Windshields, windows & Lenses have the appropriate PMA & STC information included in the price of the part.

  • A copy of the STC is included in the price of STC’d parts.

  • GLAP STC’s can not be purchased separately from a part.

  • GLAP recommends that all installations are done by a certified A&P, and the proper installation manuals, installation procedures & practices recommended by the aircraft manufacturer are followed.

  • Windshields and windows are made from Acrylic sheet conforming applicable portions of ASTM D-4802, LP-391 & MIL-P-5425-D

  • All parts are shipped with appropriate insurances.

  • Uninstalled parts should be stored in a darkened cool area, and not stored in sunlight with protective paper. Storing parts with paper on windshield or window for more than three months may make paper difficult to remove.


Tinted Parts:

  • FAR (Federal Aviation Regulation) 23.775 states that Windshields and Windows in front of the pilot may have a minimum light transmittance of 70%.  The Green (2111) and Gray (2515) tints have a tint of approx light transmittance of approximately 75%.  
  • Inner and Outer windows in front of the pilot may not both be tinted, only one window may be tinted, the other must be clear.  Some applications such as the PA-31 use tinted inner windows and the outer must be clear, most other aircraft the outer window is tinted and the inner is clear.
  • Most Outer Non-Pressurized windshields and windows are available in Clear, “EZ-Eye” Green (2111) and “Solar” Gray (2115) unless otherwise noted in our the catalog or on-line.
  • Skylights and Windows behind the pilot are available in Other darker Tints.
  • Dark Gray (2064) (approximately 26% light transmittance or 74% tint (block) is stocked for most thickness acrylic and available for no extra charge. Other tints (Special OUT-OF-STOCK colors may be subject to extra charges).
  • Some tints may not be available in all thickness options.
  • Some parts are not available in custom tints, for example, Landing light lenses, tail cone lenses, and most wing tip lenses that were originally clear by the manufacturer, are available in clear ONLY, unless specified otherwise in this catalog or online.


Custom Trimming:

  • Windshields & windows may be trimmed to the size of a customer supplied part or specifications.
  • There is normally no extra charge for minor custom trimming if we receive the details as to how to trim the part before we process the part prior to shipping.
  • Advance notification of shipping the original window or template to us is required. 
  • In the event special trimming is requested AFTER any part has left our facility, shipping charges will NOT be the responsibility of GLAP, (shipping is to be paid by the customer) and there will be a minimum charge of $25.00 or more modification charge per item (depending on quantity and complexity of modification of an item). GLAP is not be responsible for damage done to the part from shipping or other incidental damage from handling, it is highly recommended to make sure parts are properly covered and well protected from damage during shipping and while handling. GLAP will only trim the part as requested and the part(s) will not be reinspected for optical quality or damages
  • Custom Trimmed parts are NOT returnable.
  • Special size or unusual shaped sheet is NOT returnable.
  • NO RUSH ORDERS ACCEPTED on custom trimming


Custom Parts

  • Custom parts are those parts that are not listed in our current catalog at the time of manufacture, or parts that have been modified as per a customer request and specifications.
  • We are able to make custom acrylic or polycarbonate parts for automobiles, motorcycles, boats etc with a customer supplied part.
  • Custom parts may be subject to a tooling set up charge. 
  • Prices are calculated by size, trim, shape and complexity of the part.
  • Each part is assessed on an individual bases for price.
  • The customer is responsible for sending us tooling or an original part to be copied.
  • GLAP reserves the right not to make custom parts.