EASA AD No: 2009-0274-E 

EASA Form 111 Page 1/2 

 

EASA EMERGENCY AIRWORTHINESS DIRECTIVE 

AD No.: 2009-0274-E 

Date: 18 December 2009 

Note: This emergency Airworthiness Directive (AD) is issued by EASA, acting in 

accordance with Regulation (EC) No 216/2008 on behalf of the European Community, its 

Member States and of the European third countries that participate in the activities of 

EASA under Article 66 of that Regulation. 

This AD is issued in accordance with EC 1702/2003, Part 21A.3B. In accordance with EC 2042/2003 Annex I, Part M.A.301, 

the continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person 

may operate an aircraft to which an AD applies, except in accordance with the requirements of that AD unless otherwise 

specified by the Agency [EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 

216/2008, Article 14(4) exemption]. 

Type Approval Holder’s Name : 

Agusta S.p.A

Type/Model designation(s) : 

A109A, A109AII, A109C, A109K2 

Helicopters 

TCDS Number: EASA R.005 

Foreign AD: Not applicable 

Supersedure: None 

ATA 62 Main Rotor - Fixing Bolts of the Scissor Fitting Assembly - 

Inspection/Replacement 

Manufacturer(s): Agusta S.p.A 

Applicability: A109A, A109AII, A109C, A109K2 helicopters all serial numbers 

Reason: A failure of a two bolts p/n 109-0101-78-5 on one A109K2 helicopter has 

been reported to Agusta S.p.A.. The investigation carried out by Agusta 

S.p.A. has identified that the failure has been originated by the inadequate 

information reported in the technical publications related to the 

configuration of the main rotor scissor fitting installation. Failure of these 

bolts might lead to the loss of control of the helicopter. 

To prevent this unsafe condition, Agusta S.p.A. has issued two Alert 

Technical Bulletins (as applicable for the different models) with the proper 

installation procedure of the main rotor scissor fitting. 

This Emergency AD requires the inspection of the main rotor scissor fitting 

for checking its proper installation and if found not to be properly installed, 

mandates the replacement of the bolts p/n 109-0101-78-5 in accordance 

with Mandatory Alert Bolletino Tecnico (BT) Agusta. N° 109K-53 or 

Mandatory Alert BT Agusta N° 109-131. 

Effective Date: 20 December 2009 
EASA AD No: 2009-0274-E 

EASA Form 111 Page 2/2 

 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

• within 5 flight hours after the effective date of this AD, inspect the 

main rotor scissor fitting assembly for checking its proper 

installation in accordance with Agusta Mandatory Alert BT 109-131 

for A109A, A109AII, A109C and Agusta Mandatory Alert BT 109K53 for A109K2; and 

• if the main rotor scissor fitting assembly is not properly installed, 

within 25 flight hours after the effective date of this AD but not later 

then 30 April 2010, replace the bolts p/n 109-0101-78-5 and the two 

washers p/n NAS1149C0463R and p/n NAS1149C0432R in 

accordance with Agusta Alert Mandatory BT 109-131 for A109A, 

A109AII, A109C and Agusta Alert Mandatory BT 109K-53 for 

A109K2. 

Ref. Publications: Agusta Alert Mandatory Bollettino Tecnico 109K-53 dated 18 December 

2009. 

Agusta Alert Mandatory Bollettino Tecnico 109-131 dated 18 December 

2009. 

Remarks : 1. If requested and appropriately substantiated, EASA can approve 

Alternative Methods of Compliance for this AD. 

2. The safety assessment has requested not to implement the full 

consultation process and an immediate publication and notification. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, Certification 

Directorate, EASA. E-mail: ADs@easa.europa.eu. 

4. For any questions concerning the technical content of the 

requirements in this AD, please contact: 

Agusta S.p.a. Customer Support 

Via del Gregge, 100 - 21015 Lonate Pozzolo (VA) – Italy 

Phone + 39 0331- 664396 

Fax: + 39 0331 664680 

E-mail: custserv@agustawestland.com.