Civil Aviation Administration

Statens Luftfartsvæsen

AIS HQ / Luftfartsinformationstjenesten, Ellebjergvej 50, DK-2450 København SV, Danmark

TEL: +45 36 18 60 00, FAX: +45 36 18 60 22, E-mail: ais@slv.dk, Internet: www.slv.dk

45 / 04

30 SEP

AIC - B 45 / 04 Emne: Special Airworthiness Information Bulletin (SAIB) vedrørende TCM (tidligere Bendix) S20,

S200 og S1200 serie magneter.

Statens Luftfartsvæsen (SLV) har fra FAA modtaget vedlagte SAIB vedrørende inspektion af ”capacitor” p/n 10-400615 samt en mulig

forvirring omkring nummersystemet. Baggrunden er en fejl i de kondensatorer, der er solgt og installeret i nævnte magneter i perioden 1.

oktober 2003 til 18 juni 2004 . Fejlen kan resulterer i en ”varm” magnet det vil sige en magnet der ikke kan afbrydes uanset tændingkon-

taktens stilling, med heraf følgende mulighed for personskade.

TCM har udgivet to ”Critical Service Bulletins” CSB 04-5 og CSB 665 af 18 juni 2004. FAA og SLV anbefaler af disse CSB følges.

Følgende SAIB’er er vedlagt for information og evt. aktion:

FAA SAIB: No. NE-04-73 August 3, 2004

(TL)

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1

SPECIAL

AIRWORTHINESS

INFORMATION

BULLETIN

Aircraft Certification Service

Washington, DC

U.S. Department

of Transportation

Federal Aviation

Administration

NE-04-73

August 3, 2004

www.faa.gov/certification/aircraft

This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin recommends that you, owners and operators of

Teledyne Continental Motors (TCM), Textron Lycoming Corp., and Franklin Engine Co. series

reciprocating engines

equipped with

TCM (formerly Bendix) S20, S200 and S1200 series

magnetos

, be aware that TCM has issued service documents for inspection of the capacitor P/N 10-

400615 used in these magnetos.

•

The FAA has received reports of some confusion with the numbering system for S20, S200 or

S1200 series magnetos. Each magneto’s model number has a code describing the unit as

follows:

Magnetos

Code

Signifies

S

Ignition type (Single)

4, 6 or 8

Number of cylinders

L or R

Direction of rotation (Left-hand or Right-hand)

N or SC

Manufacturer Designation or Short Cover

-25, -204

Magneto series

Magneto Examples

S6RSC-21

Single ignition, 6 cylinder engine, Right-hand

rotation, Short cover, S20 series

S4LN-1209

Single ignition, 4 cylinder engine, Left-hand

rotation, Bendix (now TCM), S1200 series

Background

Between October 1, 2003 and June 18, 2004, TCM installed P/N 10-400615 capacitors in new and

rebuilt S20, S200 and S1200 series magnetos. These capacitors have date codes of 03-44 through

04-17 stamped on the capacitor. The capacitors were sold as service spares during the same period

and may have been installed during field repair or overhaul. We have received reports of magneto

capacitors that may have ground stud (also referred to as the P-lead stud) threads that do not meet

specification. This could allow the ground wire (P-lead) to come loose resulting in a

hot magneto

.

A

hot magneto

means that the magneto cannot be turned off regardless of ignition switch position.

This

could cause an engine start

should you move the propeller. If an aircraft with one of these

capacitors installed is on the ground, it could certainly be a serious hazard to any person.

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2

TCM has issued Critical Service Bulletins CSB 04-5 and CSB 665, both dated June 18, 2004. CSB

04-5 announces the issuance of CSB 665 and requires compliance with CSB 665 on receipt. CSB

665 specifies the inspection criteria to determine if the capacitor, P/N 10-400615, was manufactured

correctly or must be replaced.

CSB 665 also specifies:

•

the serial numbers (SNs) of new and rebuilt magnetos that have the suspect capacitors

installed

•

SNs of magnetos on which compliance with CSB 665 has already been verified

•

inspection procedures for capacitor P/N 10-400615 that are still in stock

•

capacitor replacement instructions

Recommendation

We highly recommend that you comply with TCM CSB 04-5 and CSB 665. We also recommend

that you inspect the magnetos listed by SN, which were repaired or overhauled between

October 1, 2003 and June 18, 2004.

For Further Information Contact

The complete text of TCM CSB 04-5 and CSB 665 are available on the TCM website:

www.TCMLINK.com

.

Teledyne Continental Motors, P.O. Box 90, Mobile, AL 36601; Customer Service Department

(888) 826-5465 for a free copy of these documents.

Jerry Robinette, Aerospace Engineer, Atlanta Aircraft Certification Office, FAA, Small Airplane

Directorate, 1895 Phoenix Boulevard, One Crown Center, Suite 450, Atlanta, GA, 30349; phone:

(770) 703-6096; fax: (770) 703-6097; email: jerry.robinette@faa.gov