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Service Bulletin SB AC32/07
Revision: 1.0
Page 1 / 15
TITLE: Power Module Replacement DOCUMENT NUMBER: SB AC32/07 EQUIPMENT: AC32 Digital Air Data Computer © Copyright by THOMMEN AIRCRAFT EQUIPMENT AG, CH-4132 Muttenz, Switzerland
Legal Notice:
This document and the information enclosed are proprietary data of THOMMEN AIRCRAFT EQUIPMENT AG. Neither this document nor the information contained shall be used, reproduced, or disclosed to others without the written authorization of THOMMEN AIRCRAFT EQUIPMENT AG, except to the extent required for installation or maintenance of the recipient’s equipment(s).
Service Bulletin SB AC32/07
Revision: 1.0
Page 2 / 15
RECORD OF REVISIONS
Rev. Date Reason for Revision Prepared Checked Approved
1.0 2023-08-31 Initial Release
S. Al-Duri.
A. Siva
G. Schaffner
Service Bulletin SB AC32/07
Revision: 1.0
Page 3 / 15
SERVICE BULLETIN
1. Planning Information A. Effectivity This service bulletin applies to the AC32 Digital Air Data Computer. It only applies to units manufactured or maintained between August 2014 and December 2016 as listed in Appendix A.
B. Concurrent Requirements None required.
C. Reason This document is issued to provide information about the replacement of the power module on the AC32 Digital Air Data Computer.
Units identified in Appendix A could stop functioning at operating temperatures below -20°C and return the error code FC025. The error is detectable. It leads to a clear error condition (discontinuation of operation). There is no transmission of erroneous data like last good value.
D. Description This service bulletin provides the instruction to the operator to remove the affected AC32 Digital Air Data Computer.
The affected equipment must be returned to THOMMEN for replacement of the power module, which can ONLY be done by THOMMEN AIRCRAFT EQUIPMENT AG Maintenance organisation.
E. Compliance Recommendation This service bulletin shall be incorporated within 12 months.
F. Approval The AC32 Digital Air Data Computer conforms to TSO-C106, and TSO-C88a.
This service bulletin contains no modification information that revises the approved configuration and therefore does not require any implementation of governmental or other regulatory agency approval.
G. Manpower This service bulletin can be implemented by one authorised technician.
H. Weight and Balance Not affected.
I. Electrical Load Data Not changed.
J. Software Accomplishment Summary Not affected.
Service Bulletin SB AC32/07
Revision: 1.0
Page 4 / 15 K. References [01] AC-INST-500 Rev. 2.5, AC32 Digital Air Data Computer Installation Manual, 2016-10-10 L. Other Publications Affected None.
M. Interchangeability of Parts Not affected.
Service Bulletin SB AC32/07
Revision: 1.0
Page 5 / 15
2. Material Information A. Material – Price and Availability The replacement of the power module required for implementation of this service bulletin will be performed free of charge for units which are under warranty in accordance with Thommen’s General Terms and Condition (see https://thommen.aero/general-terms-and-conditions/)
For availability and lead time or other information, please contact:
THOMMEN AIRCRAFT EQUIPMENT AG Sales Department Hofackerstrasse 48 CH-4132 Muttenz Switzerland Phone: +41 61 965 22 22 Email: sales@thommen.aero NOTE:
All units subject for application of this service bulletin must be scheduled prior to shipping. Contact THOMMENAIRCRAFT EQUIPMENT AG for further lead time and delivery schedule.
B. Tooling – Price and Availability No special tools are required.
Service Bulletin SB AC32/07
Revision: 1.0
Page 6 / 15
3. Accomplishment Instructions A. Procedure Check if aircraft is equipped with an AC32 Digital Air Data Computer from the list in Appendix A.
If yes:
Check EASA Form 1 for the AC32 Digital Air Data Computer if this service bulletin has already been incorporated.
If SB AC32/07 has not yet been incorporated:
Replace AC32 Digital Air Data Computer in accordance with the Installation Manual [01].
Contact THOMMEN AIRCRAFT EQUIPMENT AG Phone: +41 61 965 22 22 Email: sales@thommen.aero to schedule incorporation of SB AC32/07.
Ship removed unit to:
THOMMEN AIRCRAFT EQUIPMENT AG Maintenance Hofackerstrasse 48 CH-4132 Muttenz Switzerland Else:
No action required.
B. Testing The unit pass-off testing will be accomplished by THOMMEN AIRCRAFT EQUIPMENT AG C. Modification Status Marking Not required.
Service Bulletin SB AC32/07
Revision: 1.0
Page 7 / 15 Appendix A Applicable units
The table below lists all AC32 Digital Air Data Computer units affected by this service bulletin.
Part Number Serial Number AC32.10.21.10.AU 1065623 AC32.10.21.10.AU 1065624 AC32.10.21.10.AU 1065625 AC32.10.21.10.AU 1065626 AC32.10.21.10.AU 1065627 AC32.10.21.10.AU 1065628 AC32.10.21.10.AU 1065749 AC32.10.21.10.AU 1065750 AC32.10.21.10.AU 1065751 AC32.10.21.10.AU 1065752 AC32.10.21.10.AU 1065753 AC32.10.21.10.AU 1065754 AC32.10.21.10.AU 1078504 AC32.10.21.10.AU 1078505 AC32.10.21.10.AU 1078522 AC32.10.21.10.AU 1078523 AC32.10.21.10.AU 1078543 AC32.10.21.10.AU 1078544 AC32.10.21.10.AU 1078545 AC32.10.21.10.AU 1078554 AC32.10.21.10.AU 1078555 AC32.10.21.10.AU 1078556 AC32.10.21.10.AU 1078568 AC32.10.21.10.AU 1078569 AC32.10.21.10.AU 1078570 AC32.10.21.10.AU 1078571 AC32.10.21.10.AU 1078572 AC32.10.21.10.AU 1078573 AC32.10.21.10.AU 1078727 AC32.10.21.10.AU 1078808 AC32.10.21.10.AU 1078809 AC32.10.21.10.AU 1078812 AC32.10.21.10.AU 1078813 AC32.10.21.10.AU 1078817 AC32.10.21.10.AU 1081971 AC32.10.21.10.AU 1081972 AC32.10.21.10.AU 1081973 AC32.10.21.10.AU 1091148 AC32.10.21.10.AU 1091154 AC32.10.21.10.AU 1091155 AC32.10.21.10.AU 1091159 AC32.10.21.10.AU 1091786 AC32.10.21.10.AU 1091801
Service Bulletin SB AC32/07
Revision: 1.0
Page 8 / 15 Part Number Serial Number AC32.10.21.10.AU 1094412 AC32.10.21.10.AU 1096128 AC32.10.21.10.AW 1065739 AC32.10.21.10.AW 1065740 AC32.10.21.10.AW 1065741 AC32.10.21.10.AW 1065758 AC32.10.21.10.AW 1068588 AC32.10.21.10.AW 1068589 AC32.10.21.10.AW 1078006 AC32.10.21.10.AW 1078007 AC32.10.21.10.AW 1078008 AC32.10.21.10.AW 1078009 AC32.10.21.10.AW 1078163 AC32.10.21.10.AW 1078164 AC32.10.21.10.AW 1078165 AC32.10.21.10.AW 1078166 AC32.10.21.10.AW 1078395 AC32.10.21.10.AW 1078396 AC32.10.21.10.AW 1078502 AC32.10.21.10.AW 1078503 AC32.10.21.10.AW 1078550 AC32.10.21.10.AW 1078552 AC32.10.21.10.AW 1078553 AC32.10.21.10.AW 1078559 AC32.10.21.10.AW 1078560 AC32.10.21.10.AW 1078561 AC32.10.21.10.AW 1078562 AC32.10.21.10.AW 1078806 AC32.10.21.10.AW 1078807 AC32.10.21.10.AW 1078814 AC32.10.21.10.AW 1078815 AC32.10.21.10.AW 1078816 AC32.10.21.10.AW 1078818 AC32.10.21.10.AW 1078851 AC32.10.21.10.AW 1091149 AC32.10.21.10.AW 1091158 AC32.10.21.10.AW 1091160 AC32.10.21.10.AW 1091161 AC32.10.21.10.AW 1091787 AC32.10.21.10.AW 1091798 AC32.10.21.10.AW 1091799 AC32.10.21.10.AW 1095289 AC32.10.21.10.AW 1095290 AC32.10.21.10.AW 1096587 AC32.10.21.10.BU 1078002
Service Bulletin SB AC32/07
Revision: 1.0
Page 9 / 15 Part Number Serial Number AC32.10.21.10.BU 1078003 AC32.10.21.10.BU 1078004 AC32.10.21.10.BU 1078005 AC32.10.21.10.BU 1078077 AC32.10.21.10.BU 1078078 AC32.10.21.10.BU 1078079 AC32.10.21.10.BU 1078080 AC32.10.21.10.BU 1078081 AC32.10.21.10.BU 1078082 AC32.10.21.10.BU 1078186 AC32.10.21.10.BU 1078187 AC32.10.21.10.BU 1078188 AC32.10.21.10.BU 1078189 AC32.10.21.10.BU 1078190 AC32.10.21.10.BU 1078191 AC32.10.21.10.BU 1078192 AC32.10.21.10.BU 1078193 AC32.10.21.10.BU 1078194 AC32.10.21.10.BU 1078195 AC32.10.21.10.BU 1078202 AC32.10.21.10.BU 1078203 AC32.10.21.10.BU 1078204 AC32.10.21.10.BU 1078205 AC32.10.21.10.BU 1078210 AC32.10.21.10.BU 1078211 AC32.10.21.10.BU 1078212 AC32.10.21.10.BU 1078214 AC32.10.21.10.BU 1078215 AC32.10.21.10.BU 1078216 AC32.10.21.10.BU 1078217 AC32.10.21.10.BU 1078221 AC32.10.21.10.BU 1078222 AC32.10.21.10.BU 1078223 AC32.10.21.10.BU 1078224 AC32.10.21.10.BU 1078225 AC32.10.21.10.BU 1078226 AC32.10.21.10.BU 1078229 AC32.10.21.10.BU 1078230 AC32.10.21.10.BU 1078308 AC32.10.21.10.BU 1078309 AC32.10.21.10.BU 1078310 AC32.10.21.10.BU 1078311 AC32.10.21.10.BU 1078312 AC32.10.21.10.BU 1078313 AC32.10.21.10.BU 1078314 AC32.10.21.10.BU 1078315 AC32.10.21.10.BU 1078316
Service Bulletin SB AC32/07
Revision: 1.0
Page 10 / 15 Part Number Serial Number AC32.10.21.10.BU 1078317 AC32.10.21.10.BU 1078318 AC32.10.21.10.BU 1078319 AC32.10.21.10.BU 1078326 AC32.10.21.10.BU 1078327 AC32.10.21.10.BU 1078328 AC32.10.21.10.BU 1078329 AC32.10.21.10.BU 1078616 AC32.10.21.10.BU 1078619 AC32.10.21.10.BU 1078620 AC32.10.21.10.BU 1078621 AC32.10.21.10.BU 1078622 AC32.10.21.10.BZ 1078199 AC32.10.21.10.BZ 1078200 AC32.10.21.10.BZ 1078201 AC32.10.21.10.BZ 1078492 AC32.10.21.10.BZ 1078654 AC32.10.21.10.BZ 1091800 AC32.10.21.10.BZ 1094490 AC32.10.21.10.BZ 1094491 AC32.10.21.10.BZ 1094492 AC32.10.21.10.BZ 1095301 AC32.10.21.10.BZ 1095302 AC32.10.21.10.BZ 1095303 AC32.10.21.10.BZ 1095304 AC32.10.21.10.BZ 1096078 AC32.10.21.10.BZ 1096079 AC32.10.21.10.BZ 1096080 AC32.10.21.10.BZ 1096081 AC32.10.21.10.BZ 1096082 AC32.10.21.11.AF 1065221 AC32.10.21.11.AF 1078111 AC32.10.21.11.AF 1078175 AC32.10.21.11.AF 1078176 AC32.10.21.11.AF 1078177 AC32.10.21.11.AF 1078178 AC32.10.21.11.AF 1078243 AC32.10.21.11.AF 1078244 AC32.10.21.11.AF 1078245 AC32.10.21.11.AF 1078246 AC32.10.21.11.AF 1078299 AC32.10.21.11.AF 1078300 AC32.10.21.11.AF 1078301 AC32.10.21.11.AF 1078302 AC32.10.21.11.AF 1078303
Service Bulletin SB AC32/07
Revision: 1.0
Page 11 / 15 Part Number Serial Number AC32.10.21.11.AF 1078304 AC32.10.21.11.AF 1078305 AC32.10.21.11.AF 1078306 AC32.10.21.11.AF 1078307 AC32.10.21.11.AF 1078325 AC32.10.21.11.AF 1078360 AC32.10.21.11.AF 1078361 AC32.10.21.11.AF 1078362 AC32.10.21.11.AF 1078363 AC32.10.21.11.AF 1078371 AC32.10.21.11.AF 1078372 AC32.10.21.11.AF 1078373 AC32.10.21.11.AF 1078391 AC32.10.21.11.AF 1078392 AC32.10.21.11.AF 1078393 AC32.10.21.11.AF 1078394 AC32.10.21.11.AF 1078409 AC32.10.21.11.AF 1078410 AC32.10.21.11.AF 1078429 AC32.10.21.11.AF 1078430 AC32.10.21.11.AF 1078432 AC32.10.21.11.AF 1078446 AC32.10.21.11.AF 1078447 AC32.10.21.11.AF 1078473 AC32.10.21.11.AF 1078476 AC32.10.21.11.AF 1078500 AC32.10.21.11.AF 1078501 AC32.10.21.11.AF 1078557 AC32.10.21.11.AF 1078558 AC32.10.21.11.AF 1078565 AC32.10.21.11.AF 1078598 AC32.10.21.11.AF 1078599 AC32.10.21.11.AF 1078600 AC32.10.21.11.AF 1078601 AC32.10.21.11.AF 1078602 AC32.10.21.11.AF 1078603 AC32.10.21.11.AF 1078604 AC32.10.21.11.AF 1078605 AC32.10.21.11.AF 1078606 AC32.10.21.11.AF 1078607 AC32.10.21.11.AF 1078780 AC32.10.21.11.AF 1078781 AC32.10.21.11.AF 1078782 AC32.10.21.11.AF 1078783 AC32.10.21.11.AF 1078787 AC32.10.21.11.AF 1078788 AC32.10.21.11.AF 1078789
Service Bulletin SB AC32/07
Revision: 1.0
Page 12 / 15 Part Number Serial Number AC32.10.21.11.AF 1078790 AC32.10.21.11.AF 1090171 AC32.10.21.11.AF 1090172 AC32.10.21.11.AF 1090385 AC32.10.21.11.AF 1090386 AC32.10.21.11.AF 1090387 AC32.10.21.11.AF 1090388 AC32.10.21.11.AF 1090389 AC32.10.21.11.AF 1090390 AC32.10.21.11.AF 1090391 AC32.10.21.11.AF 1090392 AC32.10.21.11.AF 1090393 AC32.10.21.11.AF 1090394 AC32.10.21.11.AF 1090481 AC32.10.21.11.AF 1092637 AC32.10.21.11.AF 1092638 AC32.10.21.11.AF 1092639 AC32.10.21.11.AF 1092640 AC32.10.21.11.AF 1092641 AC32.10.21.11.AF 1092642 AC32.10.21.11.AF 1092643 AC32.10.21.11.AF 1092644 AC32.10.21.11.AF 1092645 AC32.10.21.11.AF 1092646 AC32.10.21.11.AF 1092866 AC32.10.21.11.AF 1092867 AC32.10.21.11.AF 1092956 AC32.10.21.11.AF 1092957 AC32.10.21.11.AF 1093423 AC32.10.21.11.AF 1093424 AC32.10.21.11.AF 1095767 AC32.10.21.11.AF 1096745 AC32.10.21.11.AF 1096746 AC32.10.21.11.AF 1096822 AC32.10.21.11.BD 1078267 AC32.10.21.11.BD 1078268 AC32.10.21.11.BD 1078417 AC32.10.21.11.BD 1078418 AC32.10.21.11.BD 1078419 AC32.10.21.11.BD 1078749 AC32.10.21.11.BD 1078750 AC32.10.21.11.BD 1095310 AC32.10.21.11.BD 1095311 AC32.10.21.11.BR 1078520 AC32.10.21.11.BR 1078521