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2026-10-03 Recurring

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Cracks on the left-hand and right-hand tube assemblies installed on the brake pedal assemblies.

Effective: Jun 25, 2026 Category: aircraft

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2026-09-05

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Damaged spare inflation system of a certain life raft kit due to the inappropriate shipment of the parts.

Effective: Jun 17, 2026 Category: aircraft

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2026-09-09 Recurring

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Cracking at the intersection of the lateral pylon and floor spar at station (STA) 1815.

Effective: Jun 17, 2026 Category: aircraft

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2026-04-03 Recurring

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Interference found in the overhead panel area between the electrical cables and adjacent connectors could result in chafing of the electrical cables, leading to a fire in the overhead panel with co...

Effective: Apr 2, 2026 Category: aircraft Compliance: Within the compliance times specified in EASA AD 2025-0094, adjusted as per the exceptions in thi...

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2026-06-01

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: The absence of instructions on the information placards located next to the rear-facing seats to lock the seat headrest in the highest position during takeoff and landing could result in injury to ...

Effective: Mar 31, 2026 Category: aircraft Compliance: Within the compliance time specified in EASA AD 2024-0088, as incorporated by reference.

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2026-02-09

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Occurrences of a cracked main gearbox (MGB) support case have been reported on Leonardo S.p.a. Model AB412 and AB412EP helicopters. The MGB support case cracking can result in structural failure of...

Effective: Feb 18, 2026 Category: aircraft

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2026-02-05 Recurring

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: A failure of a cap angle having part number (P/N) 212-030-191-1 was reported, and the preliminary investigation identified that the failure was due to a crack in the hi-lock hole.

Effective: Feb 6, 2026 Category: aircraft Compliance: Within 5 hours time-in-service after the effective date of this AD.

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2025-25-13 Recurring

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Reports of trapped residue in the rear pneumatic line due to a non-optimal cleaning procedure during an engine shop visit.

Effective: Jan 13, 2026 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2025-21-04

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Manufacturing defects in certain forward and aft float assemblies could result in failure of a float assembly during an emergency landing on water and could prevent a timely egress from the helicop...

Effective: Dec 26, 2025 Category: aircraft Compliance: Within 24 months or during the next accomplishment of maintenance task 95-24 or 95-25 of the Leon...

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2025-19-10

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: A fire occurred during the operational check of the engine anti-icing system, involving the engine intake air cowling, wirings, and secondary structures of the intake air frame and upper deck panels.

Effective: Oct 9, 2025 Category: engine Compliance: Within the compliance times specified in EASA AD 2025-0147, as incorporated by reference.

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2025-18-01 Recurring

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Improper torque values for swashplate nuts (part number NAS1805-4) could result in failure of the main rotor function and consequent loss of control of the helicopter.

Effective: Sep 25, 2025 Category: aircraft Compliance: Within 200 flight hours after a replacement is required by inspection, or within 2,400 flight hou...

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

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

2025-17-10

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Incorrect installation of the bolts that attach the pitch (longitudinal) actuator assembly and the roll (lateral) actuator assembly to their respective bellcrank assemblies of the cyclic control sy...

Effective: Sep 9, 2025 Category: aircraft Compliance: Within 25 hours time in-service

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

2025-09-10

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: Incorrect installation of the motor (MTR) cables and the bonding braids connected to the engine fire extinguisher bottles.

Effective: Jun 16, 2025 Category: engine Compliance: Within the compliance times specified in EASA AD 2024-0193.

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2025-09-06

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters

Unsafe Condition: an electrical failure of the starter-generator, due to a rupture of the drive shaft, which resulted in a partial loss of battery power.

Effective: Jun 16, 2025 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters

Technical illustration of an aircraft electrical generator and wiring assembly
Problem area Electrical system

2025-07-07 Recurring

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: A report was received of a quality escape on a batch of main rotor blades (MRBs), where the tip cap had been replaced by following a procedure and using tools not in accordance with Leonardo Techni...

Effective: May 23, 2025 Category: aircraft Compliance: Within 25 hours TIS of the effective date of this AD, and thereafter at intervals not to exceed 2...

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

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

2025-07-01

final rule

Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers

Unsafe Condition: Occurrences of AC32 Digital ADCs that stopped functioning due to the power module failing at temperatures below -20 degrees Celsius.

Effective: May 15, 2025 Category: aircraft Compliance: Within 12 months after the effective date of this AD

Why matched: Airworthiness Directives; Thommen Aircraft Equipment AG Digital Air Data Computers

2025-03-03

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: The rescue hoist cable assembly may be equipped with a defective ball end, which could lead to failure of the rescue hoist cable assembly, possibly resulting in injuries to a human load, or to pers...

Effective: Feb 19, 2025 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2024-26-08 Recurring

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Fatigue cracking of the main landing gear (MLG) shock absorber piston rod eye ends.

Effective: Jan 17, 2025 Category: aircraft Compliance: Within 10 to 100 hours time-in-service after the effective date.

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

2024-20-07 Recurring

final rule

Airworthiness Directives; Various Helicopters

Unsafe Condition: Difficulty pulling the emergency float kit activation handle installed on the pilot cyclic, and deficiencies in the installation of the cables on the emergency float kits.

Effective: Dec 5, 2024 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Various Helicopters

2024-17-07 Recurring

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Cracks found on tail rotor (TR) damper bracket assemblies due to stress corrosion, which could lead to fracture of the affected part, TR blade loss, unbalance or damage to the tail or other parts o...

Effective: Nov 12, 2024 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

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

2024-18-01 Recurring

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Abnormal play on the collective torque tube assemblies, which could result in reduced control of the helicopter, leading to a forced landing and potential damage to the helicopter and injury to occ...

Effective: Nov 12, 2024 Category: aircraft Compliance: Within the specified inspection intervals as outlined in the incorporated EASA AD 2023-0035.

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2024-15-11

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Loose tail rotor duplex bearing locking nuts, possibly caused by improper installation.

Effective: Oct 21, 2024 Category: aircraft Compliance: Within 100 hours time-in-service or 6 months, whichever occurs first.

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

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

2024-10-08

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: a report of abnormal oscillatory behavior during automated glide slope approaches, due to sealant on the glide slope (G/S) antenna coaxial connectors

Effective: Aug 13, 2024 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

2024-10-02

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Uncommanded deployment of the emergency life-raft system (ELS) due to incorrect installation of its control cable.

Effective: Jul 22, 2024 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters

Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

2024-09-02

final rule

Airworthiness Directives; Leonardo S.p.a. Helicopters

Unsafe Condition: Manufacturing defects in certain DART Aerospace forward float and aft float with life raft assemblies, including non-conforming girt bars and incorrectly positioned belt loops, could result in fail...

Effective: Jun 5, 2024 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Leonardo S.p.a. Helicopters