2026-18600RuleWallet

Gulfstream G150s Face New Safety Limits in FAA Rule

Published Date: 9/11/2026

Rule

Summary

The FAA is superseding Airworthiness Directive (AD) 2025-15- 04, which applied to all Gulfstream Aerospace LP Model G150 airplanes. AD 2025-15-04 required revising the existing maintenance or inspection program, as applicable, to incorporate a new airworthiness limitation. Since the FAA issued AD 2025-15-04, the FAA has determined that new or more restrictive airworthiness limitations are necessary. This AD continues to require actions in AD 2025-15-04 and requires revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is issuing this AD to address the unsafe condition on these products.

Analyzed Economic Effects

3 provisions identified: 1 benefits, 2 costs, 0 mixed.

Mandatory Maintenance Program Revision

If you operate a Gulfstream G150 airplane, you must revise your maintenance or inspection program to incorporate new or more restrictive airworthiness limitations specified in CAAI AD ISR I-05-2025-10-1 and Section 05-10-10, Revision 30, dated September 15, 2025. The AD is effective October 16, 2026, and the initial compliance time for the tasks is the applicable initial inspection interval or within 90 days after the effective date, whichever occurs later.

Estimated Compliance Cost Per Operator

The FAA estimates this AD affects 82 U.S.-registered Gulfstream G150 airplanes. The FAA estimates the total cost per operator for the retained actions from AD 2025-15-04 is $7,650 (90 work-hours × $85/hour) and estimates the total cost per operator for the new actions is $7,650 (90 work-hours × $85/hour).

Prevents Fatigue and Gear Failures

The AD is issued to address fatigue damage in the horizontal stabilizer and elevator systems and to prevent failure of the nose landing gear (NLG) actuator-to-strut attachment pin. If not addressed, these problems could cause undetected fatigue cracking, loss of elevator control authority, or failure of the NLG to retract and lock after takeoff or extend and lock before landing.

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Key Dates

Published Date
Rule Effective
9/11/2026
10/16/2026

Department and Agencies

Department
Independent Agency
Agency
Transportation Department
Federal Aviation Administration
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