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2026-10-51

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: A crack on the main rotor (MR) mast due to an abnormal increase of vibration and corrosion pitting.

Effective: Jun 24, 2026 Category: aircraft

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2025-24-08 Recurring

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: cracks on the rotating and non-rotating part of the swashplates of Guimbal Model Cabri G2 helicopters, likely caused by aging and corrosion.

Effective: Jan 13, 2026 Category: aircraft Compliance: Within 60 hours time in service (TIS) or 14 months, whichever occurs first.

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

2024-01-52 Recurring

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: Crack in the pilot or co-pilot cyclic stick base, potentially leading to failure and subsequent loss of control of the helicopter.

Effective: Feb 21, 2024 Category: aircraft Compliance: Within 205 hours time-in-service (TIS) from the effective date.

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

2023-24-51 Recurring

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: A crack in the pilot cyclic stick base due to fatigue, primarily related to induced loads on the cyclic stick during pre-flight (free play) checks.

Effective: Dec 28, 2023 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

2023-11-07

final rule

Airworthiness Directives; Various Helicopters

Unsafe Condition: unsafe condition on these products.

Effective: Jun 22, 2023 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Various Helicopters

2022-07-12 Recurring

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: A design change was developed for the main rotor hub and swashplate guide including installation instructions for the modification. The condition, if not addressed, could result in failure of a rot...

Effective: May 10, 2022 Category: aircraft Compliance: Within 60 hours TIS or 6 months, whichever occurs first after the effective date of the AD

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2021-22-08

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: Failure of a part, which could result in loss of control of the helicopter.

Effective: Jan 13, 2022 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

2021-21-06

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: Failure of the cooling fan due to a crack in the fan external ring or on the cooling fan front flange, which could result in engine in-flight shut-down and reduced control of the helicopter.

Effective: Dec 17, 2021 Category: aircraft Compliance: Within the effective date of this AD.

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

2021-19-07

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: Cracking of a MR non-rotating scissor link, if not addressed, could result in failure of that scissor link, resulting in reduced control of the helicopter.

Effective: Nov 4, 2021 Category: aircraft Compliance: Within 50 hours time-in-service or 2 months after the effective date of this AD, whichever occurs...

Why matched: Airworthiness Directives; Helicopteres Guimbal Helicopters

2021-19-04

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: cracks on the main rotor scissor link due to corrosion, which could result in failure of the main rotor swashplate guide bellcrank and reduced control of the helicopter.

Effective: Oct 12, 2021 Category: aircraft Compliance: Within 50 hours time-in-service or 2 months, whichever occurs first after the effective date of t...

Why matched: Airworthiness Directives; Helicopteres Guimbal Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2021-02-20 Recurring

final rule

Airworthiness Directives; Hélicoptères Guimbal Helicopters

Unsafe Condition: A crack in a rotating scissor fitting discovered during maintenance, suspected to be caused by corrosion under residual stress, which could result in failure of the rotating or non-rotating scissor...

Effective: Feb 22, 2021 Category: aircraft Compliance: Within 30 hours time-in-service or 30 calendar days, whichever occurs first, and thereafter at in...

Why matched: Airworthiness Directives; Hélicoptères Guimbal Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system