Special Conditions: ALOFT AeroArchitects, Gulfstream Aerospace Corporation Model G-IV, GIV-X, GV, and GV-SP Airplanes; Rechargeable Lithium Batteries and Battery System Installations

What it does

These special conditions are issued for the Gulfstream Aerospace Corporation (Gulfstream) Model G-IV, GIV-X, GV, and GV-SP series airplanes, as modified by ALOFT AeroArchitects (ALOFT). These airplanes will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is a main ship rechargeable lithium battery. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

The Federal Aviation Administration's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 14 of the Code of Federal Regulations:

14 CFR 25

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Federal Aviation Administration has published 485 final rules in 2026 so far, compared with 518 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

What happens next and when

This action is effective on ALOFT on April 16, 2026. Send comments on or before June 1, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket FAA-2026-3490 on Regulations.gov
• Title 14 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register