FAA Issues Bulletin on How Certain Windshields Could Fail

The Federal Aviation Administration (FAA) issued a bulletin to alert owners and operators of windshield failures. The bulletin also provides information on a new windshield design that should be used if replacement of an existing windshield becomes necessary.

According to the bulletin, the windshield failures occurred on Gulfstream Aerospace Corporation G-1159A (G-III), G-IV, GIV-X, GV, GV-SP, and GVI airplanes. There have been several incidences over the past six years, according to the FAA.

“Since 2013, the FAA and Gulfstream are aware of at least 20 incidents involving windshield failures. The failures resulted in one or more of the following: arcing, cracking, smoke, and/or small fires. In some cases, this has resulted in diversions or emergency landings,” a portion of the bulletin reads.

Following the windshield failures reported, Gulfstream designed and now manufactures windshields with an improved heater terminal block, according to the company.

Recommendations

The FAA made two recommendations based on the windshield design issues, which were:

  • For Pilots: The FAA recommends that because of potential difficulty determining which windshield ply is affected, if you experience a windshield cracking event, assume that a structural windshield ply is affected, and follow the appropriate airplane flight manual emergency procedure (G-1159A (G-III) and G-IV), or abnormal procedure (GIV-X, GV, GV-SP, and GVI), which includes pulling the associated windshield heat circuit breaker.
  • For Maintenance Personnel: The FAA recommends using the new design windshields for replacements.
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