SAIB CE-05-12

SPECIAL

AIRWORTHINESS

INFORMATION

BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

CE-05-12 November 4, 2004 We post SAIBs on the internet at www.airweb.faa.gov This is information only. Recommendations are not mandatory.

Introduction

This Special Airworthiness Information Bulletin alerts you, owners and operators of EVEKTOR AEROTECHNIK L-13SW and L-13SE motor gliders, that the Czech Republic Civil Aviation Authority (CAA) has issued Airworthiness Directive (AD) CAA- AD-026/2002, dated March 29, 2002. This AD calls for the installation of a metal strainer to cover the engine inlet and protect the carburetor from ingesting impurities. The following serial numbers are affected:

Model Serial Number L-13SW All Serial Numbers L-13SE All Serial Numbers

Note: The L-13SW and L-13SE sailplanes are not type certificated in the U.S.

Background

The Czech Republic CAA has identified a situation where engine failure can occur due to an intrusion of impurities into the carburetor.

This may result from the engine inlet not being protected. Evektor has issued Mandatory Bulletin (MB) No. SW13-053a dated February 1, 2002, to address this issue with a modification.

Recommendation

We recommend that you incorporate the modification following the instructions per MB SW13-053a (copy attached).

We are providing this information as a courtesy to owners and operators as we do not issue ADs for gliders that do not have a U.S.

type certificate.

For Further Information Contact

Gregory Davison, Aerospace Engineer, FAA Small Airplane Directorate, Room 301, 901 Locust, Kansas City, MO 64106; phone: (816) 329-4130; fax: (816) 329-4090; email:

gregory.davison@faa.gov

EVEKTOR – AEROTECHNIK, a.s. Letecká 1384, 686 04 Kunovice, Czech Republic;

phone: 420 632 537 428, fax: 420 632 537 901; email: evektor@evektor.cz.

EVEKTOR Letiště, 686 04 Kunovice, Czech Republic issues MANDATORY BULLETIN No. SW13-053a with effect upon airworthiness The technical aspect approved by TI-CAA of the Czech Republic

1. CONCERNING: All powered gliders L13SW and L13SE

2. REASON: Intrusion of impurities into the carburetor leading to a possible engine failure can occur for the reason of the non-protected engine inlet.

3. REQUIRED ACTION:

4. THE LATEST DATE OF ACTION:

5. ACTION CARRIED OUT BY:

Protect the engine inlet hole by means of the metal strainer Immediately after bulletin receiving.

The operator according to the procedure stated in the appendix No. 1

6. COSTS COVERED BY: The operator

7. NECESSARY MATERIAL: The material will be delivered by the manufacturer on the basis of the operator's order

8. WORK PROCEDURE: Stated in the appendix No. 1

9. APPENDICES: 1 sheet Ing. Josef Hron Ing stom Manufacturer's representative Date: 1.2.2002 EVEKTOR s.r.o.

Letište 686 04 Kunovice phone: +420 632 537 428 fax: +420 632 537 901 e-mail: evektor@evektor.cz http://www.evektor.cz page: 1/1

Appendix No. 1 MANDATORY BULLETIN Total No. SW 13-053a Sheet: sheets:

1. Drill out the inlet hole baffle on the upper engine cover.

2. Adjust the strainer shape according to the inlet hole with the allowance of 12 mm.

Set the baffle with strainer to the original position.

4. Drill and joggle holes for rivets.

5. Rivet. Pack out snap heads of rivets with packing.

6. Write down the bulletin accomplishment into the operation documentation.

105 Necessary material:

1. Prass strainer, max. mesh size 1x1 mm, dimension 140x90 . order No. 089200.... 1 pc

2. Packing... ..order No. 736224... 1 pc

3. Rivet 2.6 × 8ČSN 02 2311.5.... order No. 045350...10 pc