Westland Helicopters Limited Airworthiness Directives

33 ADs indexed for Westland Helicopters Limited aircraft.

Models

Westland 30 Series 100 6 ADs S.p.A. 5 ADs S.p.A. (Agusta) 5 ADs Westland 30 Series 100-60 4 ADs Various 2 ADs Various 1 AD Various 1 AD

Recent ADs

2021-13-01

final rule

Airworthiness Directives; Leonardo S.p.a. (Type Certificates Previously Held by Agusta S.p.A. and AgustaWestland S.p.A.) Helicopters

Unsafe Condition: Reports of missing lock wire and loose fasteners found during inspections of the main rotor (M/R) slip ring of Model AW139 helicopters. The same part-numbered M/R slip ring may also be installed on...

Effective: Aug 3, 2021 Category: aircraft Compliance: Within 900 hours time-in-service for all affected M/R slip rings, or at the next M/R slip ring re...

Why matched: Airworthiness Directives; Leonardo S.p.a. (Type Certificates Previously Held by Agusta S.p.A. and AgustaWestland S.p.A.) Helicopters

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2019-09-04

final rule

Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters

Unsafe Condition: chafing of a rescue hoist cable that could result in detachment of an external load and subsequent injury to persons being lifted.

Effective: Jul 3, 2019 Category: aircraft Compliance: Within 10 hours time-in-service (TIS) or before the next hoist operation, whichever occurs first.

Why matched: Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters

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2018-24-06

final rule

Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A. and AgustaWestland S.p.A.) Helicopters

Unsafe Condition: a crack on a tail plane fitting, which could result in failure of the tail plane fitting and loss of helicopter control.

Effective: Jan 4, 2019 Category: aircraft Compliance: Within 50 hours time-in-service

Why matched: Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A. and AgustaWestland S.p.A.) Helicopters

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2018-19-08

final rule

Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters

Unsafe Condition: a crack on a tail gearbox fitting that could reduce the tail assembly's ability to sustain loads from the tail rotor gearbox (TGB) and the tail rotor and result in loss of helicopter control.

Effective: Oct 26, 2018 Category: aircraft Compliance: Within 30 hours time-in-service (TIS)

Why matched: Airworthiness Directives; Leonardo S.p.A. (Type Certificate Previously Held by Finmeccanica S.p.A., AgustaWestland S.p.A) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2018-16-08

final rule

Airworthiness Directives; Leonardo S.p.A. Helicopters (Type Certificate Previously Held By Finmeccanica S.p.A., AgustaWestland S.p.A)

Unsafe Condition: Degraded bearings on the engine and transmission oil cooling system pulley assembly, part number (P/N) 109G6320L01-101, can cause engine power loss, transmission failure, and loss of control of the...

Effective: Aug 20, 2018 Category: aircraft Compliance: Within 5 hours time-in-service (TIS)

Why matched: Airworthiness Directives; Leonardo S.p.A. Helicopters (Type Certificate Previously Held By Finmeccanica S.p.A., AgustaWestland S.p.A)

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2018-05-02

final rule

Airworthiness Directives; AgustaWestland S.p.A. Helicopters

Unsafe Condition: Improperly glued emergency exit windows could result in the window failing to jettison, preventing the occupants from exiting the helicopter during an emergency.

Effective: Apr 4, 2018 Category: aircraft Compliance: Within 75 hours time-in-service

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

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2016-26-01

final rule

Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters

Unsafe Condition: Loss of hydraulic power to the flight controls and subsequent loss of control of the helicopter due to potential failures in the hydraulic systems, including power control modules (PCMs), tail shut...

Effective: Jan 31, 2017 Category: aircraft Compliance: Within 50 hours time-in-service (TIS)

Why matched: Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters

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2015-02-21

final rule

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta) Helicopters

Unsafe Condition: A leak in a hydraulic system flexible hose could result in loss of hydraulic power and subsequent loss of helicopter control.

Effective: Mar 17, 2015 Category: aircraft Compliance: Within 300 hours time-in-service

Why matched: Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta) Helicopters

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2014-23-02 Recurring

final rule

Airworthiness Directives; Agusta S.p.A. Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta)

Unsafe Condition: A crack in a Gleason crown, which could cause damage to or loss of the main rotor drive and subsequent loss of control of the helicopter.

Effective: Dec 26, 2014 Category: aircraft Compliance: Within 200 hours TIS for main transmissions with 2,400 or more hours.

Why matched: Airworthiness Directives; Agusta S.p.A. Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta)

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2014-07-51 Recurring

final rule

Airworthiness Directives; AgustaWestland S.p.A. Helicopters

Unsafe Condition: Reports of certain bearings dislodging from Main Rotor (M/R) Rotating Scissors, potentially leading to loss of control of the helicopter.

Effective: Aug 20, 2014 Category: aircraft Compliance: Within 5 hours TIS for initial inspection, and thereafter at intervals not exceeding 5 hours TIS....

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

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2014-11-07

final rule

Airworthiness Directives; Agusta S.p.A Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta)

Unsafe Condition: Cracked main rotor swashplate support nuts, part number MS21042-4, due to hydrogen embrittlement from a production deficiency at the nut manufacturer, could lead to failure of the main rotor system...

Effective: Jun 18, 2014 Category: aircraft Compliance: Within 10 hours TIS for inspection, and within 25 hours TIS for replacement of all nuts.

Why matched: Airworthiness Directives; Agusta S.p.A Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta)

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2014-09-01 Recurring

final rule

Airworthiness Directives; AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) (Agusta) Helicopters

Unsafe Condition: A crack in the tail rotor blade retaining bolt (part number 109-8131-09-1), which could result in failure of the bolt, release of a tail rotor blade, and subsequent loss of control of the helicopter.

Effective: Jun 5, 2014 Category: aircraft Compliance: Before exceeding 500 hours time-in-service (TIS) for bolts with less than 400 hours TIS, or befor...

Why matched: Airworthiness Directives; AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) (Agusta) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2014-04-14

final rule

Airworthiness Directives; Agusta S.p.A. Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A) (AgustaWestland)

Unsafe Condition: A crack in a rod end assembly, which could result in fracture of the rod end assembly, damage to the main rotor, and subsequent loss of control of the helicopter.

Effective: Apr 7, 2014 Category: aircraft Compliance: Within 25 hours time-in-service

Why matched: Airworthiness Directives; Agusta S.p.A. Helicopters (Type Certificate Currently Held by AgustaWestland S.p.A) (AgustaWestland)

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2014-02-08

final rule

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta) Helicopters

Unsafe Condition: Loosening of the tail rotor (T/R) locking nut, part number 109-0130-97, due to missing or damaged lock wires securing the locking nut.

Effective: Mar 7, 2014 Category: aircraft Compliance: Within 100 hours time-in-service (TIS) if not accomplished as a result of the inspections.

Why matched: Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2013-25-09

final rule

Airworthiness Directives; AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters

Unsafe Condition: An incorrect installation of an NLG pin, which could result in collapse of the NLG during taxi or landing.

Effective: Jan 28, 2014 Category: aircraft Compliance: Within 50 hours time-in-service

Why matched: Airworthiness Directives; AgustaWestland S.p.A. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters

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2013-22-16

final rule

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by Agusta Westland) Helicopters

Unsafe Condition: Intermittent noise through the audio system during flight caused by improper installation of solder splices on the co-pilot's audio panel.

Effective: Dec 13, 2013 Category: aircraft Compliance: Within 500 hours time-in-service or 5 months, whichever occurs first.

Why matched: Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by Agusta Westland) Helicopters

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2013-20-01

final rule

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta) Helicopters

Unsafe Condition: Third stage turbine vibration, which could result in turbine failure, engine power loss, and subsequent loss of control of the helicopter.

Effective: Dec 5, 2013 Category: engine Compliance: Within 30 days

Why matched: Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A) (Agusta) Helicopters

Technical illustration of an aircraft turbine engine assembly
Problem area Engine
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2013-16-21 Recurring

final rule

Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by Agusta Westland S.p.A) (Agusta) Helicopters

Unsafe Condition: Fatigue failure of a tail rotor (T/R) blade due to excessive loads on the T/R blades, which could lead to loss of control of the helicopter.

Effective: Oct 30, 2013 Category: aircraft Compliance: Within specified intervals (e.g., before further flight, within 25 hours TIS, or 200 hours TIS, d...

Why matched: Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by Agusta Westland S.p.A) (Agusta) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2013-20-51

final rule

Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters

Unsafe Condition: Cracking on Thomas coupling nuts that connect the flexible disc coupling with the splined adapter on the tail rotor drive shaft, resulting from a production deficiency (hydrogen embrittlement).

Effective: Oct 25, 2013 Category: aircraft Compliance: Before further flight for inspection and replacement if cracked; within 10 hours TIS or 30 days f...

Why matched: Airworthiness Directives; AgustaWestland S.p.A. (Agusta) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system
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2013-19-01

final rule

Airworthiness Directives; AgustaWestland S.p.A. Helicopters

Unsafe Condition: Window detaching from the pilot or co-pilot doors, which could result in damage to the helicopter and injury to persons on the ground.

Effective: Oct 25, 2013 Category: aircraft Compliance: Within the next 50 hours time-in-service (TIS) or within the next five months, whichever comes fi...

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

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