Subject Reason Reason for Revision

Effectivity Compliance 

### l Publications affected Change Note



# I JAN 09/14 

## Manual Change Notification - Maintenance Documentation Fokker 28 MCNM-F28-035 REV 1 Fuel- Introduction of Fuses in the Wiring ofthe Collector-Tank Level Float Switch . This MCN is issued to provide you with the changes on the content(s) ofthe affected manual(s), due to the introduction of SBF28-28-049. With Revision 1 of SBF28-28-049, the CDCCL description in this Service Bulletin has been replaced by a reference to the applicable CDCCL items as specified in SBF28-28-050. However, the CDCCL descriptions of these referenced CDCCL items have been revised as well. As a result of this, the Change Notes given in this MCNM have been revised accordingly. Refer to SBF28-28-049. Once you have determined the applicability ofthis MCN for one or more ofyour aircraft, incorporate this information into the applicable manual(s) . The Maintenance Manual (MM) The Wiring Diagram Manual (WDM). NOTE : Make sure that your manual contains the contents of MCNM F28-023, before you incorporate this MCNM . Update chapter 28-45-01 pageblock 401, or if applicable, update Temporary Revision No. 28-32, as follows:

- In 3. Removal/Installation , add the following step between the steps 8.( 14) and 8.(15), and re-identify the existing steps 8.(15) thru 8 .(21) accordingly: NOTE : Start of Fuel System CDCCL affected section . (15) Do a check ofthe fuse assembly NOTE: The installation ofthe fuse assembly is identified with a yellow sleeve at each end. (a) Find the installation of the fuse assembly WR93-731 or 2WR93-741 between the electrical-wires (Refer to the Wiring Diagram Manual 28-45- 00 for more data). (b) Make sure that the installation of the fuse assembly is in good condition and not damaged. MCNM F28-035 REV 1 Page 1 of3

# I JAN 09/14 

## Manual Change Notification - Maintenance Documentation Fokker 28 (c) Ifthe inspection is not satisfactory, then do these steps: 

## 1 This part is subject to a CDCCL. Make sure that the partnumber ofthe fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to the Wiring Diagram Manual 28-45-00 for the approved partnumber(s)). 

### £ Replace the fuse assembly/assemblies. NOTE: End of Fuel System CDCCL affected section. Ifyour manual contains Temporary Revision No. 28-60 in front of chapter 28-45- 01 pageblock 401, then update step C.(15) as follows: NOTE : Start of Fuel System CDCCL affected section. Do a check ofthe fuse assembly

NOTE: The installation ofthe fuse assembly is identified with a yellow sleeve at each end . (a) Find the installation ofthe fuse assembly WR93-731 or 2WR93-741 between the electrical-wires (Refer to the Wiring Diagram Manual 28-45- 00 for more data). (b) Make sure that the installation ofthe fuse assembly is in good condition and not damaged . (c) Ifthe inspection is not satisfactory, then do these steps: 

## 1 This part is subject to a CDCCL. Make sure that the partnumber ofthe fuse assembly that you must install, is a CDCCL-approved partnumber (Refer to the Wiring Diagram Manual 28-45-00 for the approved partnumber(s)) . 

### £ Replace the fuse assembly/assemblies. NOTE : End of Fuel System CDCCL affected section . If your manual contains Temporary Revision No. 28-56 after 28-45-00 pageblock 401, then remove and discard this document from your manual. In 28-45-00 pageblock 001 , add the following paragraph to 1 .Description , or if your manual contains Temporary Revision No. 28-61 , then update the following paragraph as follows: There are fuse assemblies installed in the electrical-wiring ofthe float switches, between the wing rear-spar and the main tank, in zone 810 and 820. The fuses prevent that a short-circuit in the electrical-installation of a float switch can result in an ignition-source in the collector tank.

MCNM F28-035 REV 1 Page 2 of 3

## Manual Change Notification - Maintenance Documentation Fokker 28

Update Chapter 28-45-00, in accordance with the drawings as given in SBF28- 28-049, paragraph 2.0 .. On the updated wiring diagram, add the text "(CDCCL)" next to each partnumber W48006-403.

NOTE: Ifyou have a Continued Airworthiness Documentation Service with Fokker Services, this MCN will be included into your manuals, at the earliest opportunity. NOTE : MCNM-F28-035 Revision 1 supersedes MCNM-F28-035 dated JUN 23/10. Text highlighted by a revision bar indicates: A revision ofthe text introduced with the original issue ofthis MCNM . An introduction of new changes. Text not highlighted by a revision bar was already included in the original issue of this MCNM , and is not revised . It is retained for clarity. 

# I JAN 09/14 MCNM F28-035 REV 1 Page 3 of 3