Recommendations concerning use of tools fitted on magnetic ...

1 Document No: 10289830 Version: 00. Description: OIT Tech News A/C Type / Type All airbus Chapter:00. For Information Only Recommendations concerning use of tools fitted on magnetic supports This Technical News Bulletin has been published to make engineering aware of airbus OIT-999-0034-21-00. which highlights a potential safety issue. Occurrences of unexpected movement of flight control surfaces have been reported to airbus whilst maintenance actions were being performed on these surfaces. The maintenance actions required having the related actuator in active mode for their accomplishment electrically supplied and hydraulically powered. Investigations performed at the operator indicated that a light fitted on a magnetic support was installed in very close proximity of the actuator during maintenance .

2 Investigations performed at airbus confirmed that uncommanded movement of the actuator rod could occur when the magnetic support of the light is fitted very close or on the actuator servo valve itself. As indicated in the AMM/MP introduction chapters for all airbus programmes, airbus recommends not to use magnetic tools during accomplishment of maintenance as the potential effect of these different features on A/C equipment cannot be assessed thoroughly. 1. This Technical News expires 6 months from the issue date above. Note: 2. Persons performing a supervisory function are responsible for informing their appropriate staff of the content of this document. Authority: 3. Head of Engineering Quality & Technical CUSTOMER SERVICES DIRECTORATE.

3 2 ROND POINT EMILE DEWOITINE. 31700 BLAGNAC FRANCE. TELEPHONE + 33 (0)5 61 93 33 33. OPERATORS INFORMATION TRANSMISSION - OIT. SUBJECT: ATA 00 Recommendations concerning use of tools fitted on magnetic support for maintenance purpose aircraft TYPE: A300, A300-600, A310, A318, A319, A320, A321, A330, A340, A350, A380, AST. OUR REF.: Rev 00 dated 07-JUN-2021. OIT CATEGORY: Advice NOTICE: This OIT provides Recommendations on maintenance and Engineering issues/information. It is left to each Operator's discretion whether to distribute this OIT, or to distribute the information contained in this OIT, to all of their applicable maintenance and Engineering organizations for information or application of the recommendation. REFERENCED DOCUMENTS: A300-600/A310 AMM Chapter 00, Introduction, 5.

4 General Recommendations Applicable To aircraft maintenance A320 Fam. AMM, Manual front matter, Introduction, 13. General Recommendations Applicable To aircraft maintenance A330/A340 Fam. AMM, Manual front matter, Introduction, 13. General Recommendations Applicable To aircraft maintenance A380 AMM. Manual front matter, Introduction, 15. General Recommendations Applicable To aircraft maintenance A350 maintenance procedure, Introduction, GENERAL INFORMATION, G. General Recommendations applicable to aircraft maintenance , A350-A-00-61-04-11001-018A-D. airbus maintenance Briefing note: Safety Recommendations in the Technical Documentation Introductions (Airbusworld, content library, maintenance and engineering, briefing notes.). 1. PURPOSE. The purpose of this OIT is to remind operators that the , , , , , in its introduction paragraph: General Recommendations Applicable To aircraft maintenance , provides Recommendations concerning the use of tooling or lights or any equipment fitted on magnetic support in the vicinity of equipment electrically supplied and hydraulically powered during maintenance operations.

5 OIT ref: Rev 00 Page 1 of 2 Date: 07-JUN-2021. airbus 2021. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT. CUSTOMER SERVICES DIRECTORATE. 2 ROND POINT EMILE DEWOITINE. 31700 BLAGNAC FRANCE. TELEPHONE + 33 (0)5 61 93 33 33. OPERATORS INFORMATION TRANSMISSION - OIT. 2. BACKGROUND. Occurrences of unexpected movement of flight control surfaces have been reported to airbus whilst maintenance actions were being performed on these surfaces. The maintenance actions required having the related actuator in active mode for their accomplishment electrically supplied and hydraulically powered. Investigations performed at the operator indicated that a light fitted on a magnetic support was installed in very close proximity of the actuator during maintenance .

6 Investigations performed at airbus confirmed that uncommanded movement of the actuator rod could occur when the magnetic support of the light is fitted very close or on the actuator servovalve itself. 3. DESCRIPTION. As indicated in the AMM/MP introduction chapters for all airbus programmes, airbus recommends not to use magnetic tools during accomplishment of maintenance as the potential effect of these different features on A/C equipment cannot be assessed thoroughly. More information about technical documentation introductions can also be found in Ref 6. 4. FOLLOW UP. N/A. 5. CONTACTS. Questions about the technical content of this OIT are to be addressed to airbus Customer Services through TechRequest on airbus World, selecting maintenance & engineering Domain, Engineering Support Section and relevant ATA chapter.

7 Best Regards, Gilles CHASTANET. SENIOR DIRECTOR HYDROMECHANICAL SYSTEMS. CUSTOMER SERVICES. OIT ref: Rev 00 Page 2 of 2 Date: 07-JUN-2021. airbus 2021. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT.