EASA AD No.: 2012-0099 

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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2012-0099 

Date: 08 June 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 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]. 

Design Approval Holder’s Name : 

Pilatus Aircraft Ltd.

Type/Model designation(s) : 

PC-12 aeroplanes 

TCDS Number: EASA.A.089 

Foreign AD: Not applicable 

Supersedure: None 

ATA 05 Time Limits / Maintenance Checks – Airworthiness Limitation 

Section – Amendment / Implementation 

Manufacturer(s): Pilatus Aircraft Ltd. 

Applicability: PC-12, PC-12/45, PC-12/47, and PC-12/47E aeroplanes, all manufacturer serial 

numbers. 

Reason: The mandatory instructions and airworthiness limitations applicable to the 

Structure and Components of the PC-12 are specified in the Aircraft 

Maintenance Manual (AMM) under Chapter 4. Prompted by a crack found on 

one wing of the aeroplane fleet leader, a more restrictive airworthiness limitation 

was introduced, in that manual, for the inspection of the main spar rib 6 strap 

fastener. 

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 unsafe 

condition. 

For the reasons described above, this AD requires the implementation of more 

restrictive maintenance instructions and/or airworthiness limitations. 

Effective Date: 22 June 2012 
EASA AD No.: 2012-0099 

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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 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 

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 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 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 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 AMM reference 

PC-12, PC-12/45, PC-12/47 Chapter 4 of AMM report 02049, 

issue 25, dated 25 January 2012 

PC-12/47E Chapter 4 of AMM report 02300, 

issue 8, dated 25 January 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. 

Ref. Publications: 1. Pilatus PC-12 Structural, Component and Miscellaneous – Airworthiness 

Limitations, Chapter 4 of AMM report 02049 issue 25 dated 

5 January 2012, for PC-12, PC-12/45, PC-47. 

2. Pilatus PC-12 Structural, Component and Miscellaneous – Airworthiness 

Limitations, Chapter 4 of AMM report 02300 issue 8 dated 

25 January 2012, for PC-12/47E. 

The use of later approved revision 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. 
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2. This AD was posted on 19 April 2012 as PAD 12-031 for consultation until 

17 May 2012. No comments were received during the consultation period. 

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 Support Manager, 

CH-6371 STANS, Switzerland. 

Tel.: +41 (0)41 619 33 33 Fax: +41 (0)41 619 73 11. 

E-mail: SupportPC12@pilatus-aircraft.com.