SAIB CE-04-07 —

1 SPECIAL AIRWORTHINESS INFORMATION BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

No. CE-04-07 October 22, 2003 www.faa.gov - Search "SAIBs" This is information only. Recommendations are not mandatory.

Introduction This Special Airworthiness Information Bulletin (SAIB) alerts you, an owner or operator of SOCATA TB 20 and TB 21 airplanes, that SOCATA has issued Service Bulletin (SB) No. 10-135, dated April 2003, “Pitch Trim Actuator Check and Repair.” The French DGAC has issued an Airworthiness Directive (AD) 2003-286(A), dated August 06, 2003, referencing SB 10-135. This SB specifies the following aircraft as having a non conformity of tightness seals:

Models Serial Numbers 2042 2050 2056-2118 2123-2125 TB 20 and TB 21 2144

Background Non conformity of tightness seals can produce icing inside the pitch trim actuator.

Recommendation We are recommending, but not requiring, that owners and operators of SOCATA TB 20 and TB 21 airplanes referenced above accomplish a scheduled inspection in the next 100 hours and at the latest by December 31, 2003. If required, we recommend you replace the pitch trim actuator tightness seals as stated in SOCATA SB 10-135, dated April 2003.

For Further Information Contact Gunnar Berg, Aerospace Engineer, FAA Small Airplane Directorate, ACE-112, 901 Locust, Room 301, Kansas City, MO 64106; phone: (816)-329-4059; fax: (816)-329-4090; email: [email protected]

For copies of SOCATA SB 10-135,contact EADS SOCATA, Direction des Services, 65921 Tarbes Cedex 9, France; phone: 33 (0) 5 62.41.73.00; fax: 33 (0) 5 62.41.76.54; telex: 532 835 F.

2 Internet Connection For internet downloads of SOCATA SB go to http://www.socata.eads.net/ and highlight SUPPORT then click on ONLINE DOCS. Fill out first name, last name, country, and your E-mail address, then click on CONTINUE.

The SOCATA Users Group Organization go to http://socata.org/ and click on RESOURCES. Select Online SB or SL Index from there select the SB or SL that you need for your make and model airplane.