EASA AD No.: 2010-0233 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2010-0233 

Date: 26 November 2010 

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]. 

Type Approval Holder’s Name : 

DYN AVIATION 

Type/Model designation(s) : 

CAP10 

TCDS Number : EASA.A.370 

Foreign AD : Not applicable 

Supersedure : None 

ATA 27 Flight Controls – Turnbuckles – Inspection 

Manufacturer(s): CAARP, Avions Mudry et Cie, Apex Industries. 

Applicability: CAP10B and CAP10B with Major Change 000302 (commercial name 

CAP10C), all serial numbers. 

Reason: A fatal accident occurred to a CAP 10C, in which the pilot lost control of the 

aeroplane. 

The following investigation has revealed that the probable cause of the 

accident was the improper locking of a turnbuckle (locking clip missing) of 

the flight control cables, and the subsequent inadvertent release of the pitchup control cable from the turnbuckle. 

For the above described reasons, this AD requires repetitive inspections to 

verify the correct installation of the turnbuckles of the flight control cables 

and, if foreseen by the applicable design configuration of the turnbuckles and 

found to be missing, to restore the locking clip and the safety wire. 

Effective Date: 10 December 2010 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) At the next maintenance opportunity giving access to the turnbuckles of 

the flight control cables, but no later than 2 months after the effective 

date of this AD: 
EASA AD No.: 2010-0233 

EASA Form 110 Page 2/2 

(1.1) If the turnbuckles are designed to be locked with locking clips and 

safety wire, verify that the locking clips are properly installed in the 

corresponding groove, that the safety wire of a minimum diameter of 

0.8 millimetre (mm) is correctly installed and that there is no damage 

to the whole turnbuckle installation. 

(1.2) For all other designs of turnbuckles, verify the correct installation of 

the safety locking devices. 

(1.3) If any discrepancy is found during the inspection required by 

paragraph (1.1) or (1.2) of this AD, before next flight restore the 

correct turnbuckle installation in accordance with standard 

maintenance practice. 

(2) Repeat the inspection required by paragraph (1.1) or (1.2) of this AD, 

as applicable to the turnbuckles design, and the associated corrective 

actions required by paragraph (1.3) of this AD at intervals not to exceed 

110 flight hours or 13 months since the last inspection, whichever 

occurs first. 

Ref. Publications: None 

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

Alternative Methods of Compliance for this AD. 

2. This AD was published on 17 June 2010 as PAD 10-056 for consultation 

until 15 July 2010. The Comment Response Document can be found at 

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

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 question concerning the technical content of the requirements in 

this AD, please contact the General Aviation Section, Certification 

Directorate, EASA. E-mail: jean-bruno.marciacq@easa.europa.eu .