Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
Published Date: 1/8/2025
Rule
Summary
If you own or fly Gulfstream G500 or G600 jets, listen up! The FAA found cracks in the electrical grounding spots on the wings and now requires inspections, fixes if needed, and sealing those spots to keep everyone safe. These new rules kick in on February 12, 2025, so get ready to act and keep your plane flying smoothly without surprise costs.
Analyzed Economic Effects
3 provisions identified: 1 benefits, 2 costs, 0 mixed.
Mandatory inspections and disablement
If you operate Gulfstream GVII-G500 (S/Ns 72001–72139) or GVII-G600 (S/Ns 73001–73144) airplanes, you must do borescope inspections for cracks and corrosion and perform any required repairs before further flight. Within 36 months after February 12, 2025, you must remove the “GROUND HERE” decal and apply epoxy over the grounding receptacle area to permanently disable the receptacles, per Gulfstream Customer Bulletins dated November 28, 2023.
Estimated compliance and repair costs
The FAA estimates the AD affects 236 U.S.-registered airplanes. Estimated cost to inspect and disable each airplane is 64 work-hours × $85/hour = $5,440 labor plus $83 parts, totaling $5,523 per airplane and $1,303,428 on U.S. operators. On-condition repair is estimated at $1,103 per airplane (12 work-hours) and replacement at $3,901 (35 work-hours); Gulfstream warranty may cover some costs.
Stops fuel-leak safety risk
The AD responds to reports of cracking in electrical grounding receptacles that could result in fuel leaking from those receptacles. By requiring inspections, corrective actions, and epoxy sealing to permanently disable the receptacles, the rule addresses that unsafe condition.
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