EASA AD No.: 2012-0268 

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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2012-0268 

Date: 19 December 2012 

Note: This 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 EU 748/2012, Part 21.A.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]. 

Design Approval Holder’s Name : 

PILATUS AIRCRAFT Ltd.

Type/Model designation(s) : 

PC-6 aeroplanes 

TCDS Number: Switzerland No. F 56-10 

Foreign AD: Not applicable 

Supersedure: This AD supersedes EASA AD 2010-0176 dated 20 August 2010. 

ATA 05 Time Limits / Maintenance Checks – Airworthiness Limitations 

Section – Amendment / Implementation 

Manufacturer(s): Pilatus Aircraft Ltd. and Fairchild Republic Company (formerly known as 

Fairchild Industries, Fairchild Heli Porter and Fairchild-Hiller Corporation). 

Applicability: PC-6 series aeroplanes, all models, all manufacturer serial numbers. 

Reason: The mandatory instructions and airworthiness limitations applicable to the 

Structure and Components of the PC-6 are specified in the Aircraft Maintenance 

Manual (AMM) under Chapter 4 or in the Airworthiness Limitations Document 

(ALS), depending on the aeroplane model. 

These documents include the maintenance instructions and/or airworthiness 

limitations developed by Pilatus Aircraft Ltd. and approved by EASA. Failure to 

comply with these instructions and limitations could potentially lead to an unsafe 

condition. To address this potentially unsafe condition EASA issued AD 2010-

0176 to require implementation of maintenance instructions and/or airworthiness 

limitations in accordance with Pilatus PC- 6 ALS issue 1, dated 14 May 2010 

and Pilatus PC-6 AMM Chapter 4, issue 12, dated 14 May 2010. 

Since that AD was issued, Pilatus Aircraft Ltd published Pilatus PC-6 AMM 

(Number 01975) Chapter 4, issue 16 and PC- 6 ALS (Number 02334) issue 3 to 

introduce a threshold for replacement of previously not listed Flap Actuator. 

For the reason described above, this AD retains the requirement of AD 2010-

0176, which is superseded, and requires the implementation of more restrictive 

maintenance requirements and/or airworthiness limitation as specified in issue 

16 of Chapter 4 of AMM and issue 3 of ALS. This AD also requires replacement 

of any Flap Actuator which, on the effective date of this AD, has accumulated or 

exceeded 7 years since new or since last overhaul. 
EASA AD No.: 2012-0268 

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Effective Date: 02 January 2013 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated unless previously accomplished: 

(1) After the effective date of this AD, accomplish the following actions, as 

detailed in Chapter 4 of the AMM report or the ALS Document specified in 

Table 1 of this AD, as applicable: 

(1.1) Replace each component before or upon reaching the applicable life 

limit, and 

(1.2) Within the thresholds and intervals, accomplish all applicable 

maintenance tasks. 

(2) In case of finding discrepancies (as defined in Chapter 4 of the AMM report 

or the ALS document specified in Table 1 of this AD, as applicable) during 

accomplishment of any task as required by paragraph (§) (1) of this AD, 

within the applicable compliance time specified in Chapter 4 of the AMM 

report or the ALS document specified in Table 1 of this AD, as applicable, 

accomplish the applicable maintenance procedures for corrective actions in 

accordance with the approved maintenance documentation. If no 

compliance time is identified in Chapter 4 of the AMM report or the ALS 

document specified in Table 1 of this AD, as applicable, accomplish the 

applicable corrective actions before next flight. If a detected discrepancy is 

not identified in Chapter 4 of the AMM report or the ALS document specified 

in Table 1 of this AD, as applicable, before next flight, contact Pilatus 

Aircraft Ltd. for approved instructions and accomplish those instructions 

accordingly. 

Table 1 

Aeroplane Model(s) AMM / ALS reference 

PC-6 B2-H2 and 

PC-6 B2-H4 

Chapter 04-00-00 of AMM Document 

Number 01975, issue 16 dated 

31 July 2012 

All other PC-6 models ALS, Document Number 02334, 

issue 3 dated 31 July 2012 

(3) Compliance with the requirements of § (1) of this AD can be demonstrated 

by: 

(3.1) Revising as follows, unless accomplished previously, the approved 

Aircraft Maintenance Programme from which the operator or the 

owner ensures the continuing airworthiness of each operated 

aeroplane: 

 Incorporate applicable maintenance requirements and associated 

airworthiness limitations specified in § (1) of this AD, 

 and 

(3.2) Complying with the approved Aircraft Maintenance Programme 

described in § (3.1) of this AD. 

(4) For aeroplanes which have a Flap Actuator installed, except part numbers 

978.73.14.101 and 978.73.14.103, which, on the effective date of this AD, 

has already accumulated or exceeded 3500 flight hours or 7 years since 

new or since last overhaul, within 6 month or 350 flight hours, whichever 

occurs first after the effective date of this AD, but not later than 8,5 years 

since new or since last overhaul, replace the Flap Actuator with a 

serviceable part in accordance with approved maintenance instructions. 
EASA AD No.: 2012-0268 

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Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.

Ref. Publications: Pilatus PC-6 ALS, Document Number 02334, issue 3 dated 31 July 2012. 

Pilatus PC-6 AMM, Chapter 04-00-00, Document Number 01975, issue 16 dated 

31 July 2012. 

The use of later approved revisions of these documents is acceptable for 

compliance with the requirements of this AD. 

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

Methods of Compliance for this AD. 

2. This AD was posted on 09 November 2012 as PAD 12-141 for consultation 

until 07 December 2012. The Comment Response Document can be found 

at http://ad.easa.europa.eu. 

3. Enquiries regarding this AD should be referred to the Safety Information 

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

4. For any question concerning the technical content of the requirements in this 

AD, please contact: 

PILATUS AIRCRAFT LTD., Customer Liaison Manager, 

CH-6371 STANS, Switzerland. 

Tel.: +41 (0)41 619 65 80 Fax: +41 (0)41 619 65 76 

E-mail: fodermatt@pilatus-aircraft.com.