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Service Bulletin Fokker 70/100
Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Revision 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Page 18 19 20 21 22 23 24 25 26 27 28 29 Revision 1 1 1 1 1 1 1 1 1 1 1 1
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 1
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
ELECTRICAL POWER
General - A one-time Inspection and Adjustment of the Torque Values on the Circuit Breakers, Contactors and Terminal Blocks in the EPC and Battery Relay Panel.
1. Planning Information A. Effectivity
(1) F28 Mark 0070/0100 aircraft serial numbers:
11244 thru 11585
(2) Production version of this modification: Not applicable.
B. Concurrent Requirements
(1) Before you do this SB, you must do, if applicable:
- SBF100-24-032 - ELECTRICAL POWER – DC Bus Transfer – The Modification to the DC Bus Transfer System.
(2) Before you do this SB, you must do, if applicable:
- SBF100-24-041 - ELECTRICAL POWER – AC Bus Transfer – Introduction of Self- Locking Nuts on the Terminal Posts of Electrical Power Contactor pn SG02206.
NOTE: Disregard the associated Manual Change Notification MCNM F100-120.
C. Reason
(1) Fokker Services received reports about loose nuts of contactors in the Electrical Power Center (EPC). In some cases this led to damaged (burned) contactors.
(2) In the past SBF100-24-011 (Alert SB) was issued to inspect and adjust several torque values of bus bars and contactors in the EPC and Battery Relay Panel.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 2 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
(3) In the POST SBF100-24-A011 configuration, still loose nuts are found on contactors in the EPC, which cause damaged and/or burned contactors. For that reason, a onetime inspection on torque values on nuts for electrical connections in the EPC and Battery Relay Panel must be done. Furthermore, new lock washers and certain new self locking nuts must be installed.
Reason for Revision:
This revision is made to:
- Incorporate SBCN /01 and SBCN /02
- Add Terminal Block TB4906A to table 6 on page 16.
D. Description
(1) This Service Bulletin is divided into two parts as follows:
Part 1: Inspection and Adjustment of the Torque Values for the Fokker 100 Aircraft.
This Part tells you how to:
- Inspect and adjust the torque values of:
- Circuit breakers
- Fuse holder
- Relays and contactors
- Terminal blocks
- Replace installed lock washers and certain self locking nuts.
- Use the torque inspection lacquer to seal the nuts.
Part 2: Inspection and Adjustment of the Torque Values for the Fokker 70 Aircraft.
This Part tells you how to:
- Inspect and adjust the torque values of:
- Circuit breakers
- Fuse holder
- Relays and contactors.
- Terminal blocks
- Replace installed lock washers and certain self locking nuts.
- Use the torque inspection lacquer to seal the nuts.
Part 3: Completion and Testing for the Fokker 100 and Fokker 70 Aircraft.
This Part tells you how to:
- Complete the job.
- Perform the applicable testing.
Service Bulletin Fokker 70/100
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 3
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
E. Compliance
(1) Recommended.
Fokker Services recommend the accomplishment of this service bulletin within 2 years after the original issue date of this bulletin.
NOTE: It is expected that EASA will issue an Airworthiness Directive (AD) with respect to this subject with the same compliance terms. Refer to the EASA web site for the publication of a Proposed Airworthiness Directive for comments.
F. Approval
(1) The technical content of this document is approved under the authority of DOA nr.
EASA.21J.059.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 4 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
G. Manpower
(1) Approximately 9,0 man-hours are necessary to do Part 1 and Part 3 of this SB on one Fokker 100 aircraft applicable to serial numbers 11244 thru 11461.
This table of manpower will help you to schedule and do this Service Bulletin:
Instructions Men Man-hours Elapsed time (hours) Removal 1 1 1 Modification Inspection 2 4 3 Installation Testing 2 4 2 Total 9,0 6,0
(2) Approximately 16,0 man-hours are necessary to do:
Part 1 and Part 3 of this SB on one Fokker 100 aircraft applicable to serial numbers 11462 thru 11507, 11509, 11511 thru 11520, 11522, 11523 and 11527 or Part 2 and Part 3 of this SB on one Fokker 70 aircraft.
This table of manpower will help you to schedule and do this Service Bulletin:
Instructions Men Man-hours Elapsed time (hours) Removal 2 4 2 Modification Inspection 2 4 3 Installation Testing 2 8 4 Total 16,0 9,0
NOTE: This estimate does not include the time necessary for the paint to dry and/or the sealant to cure.
(3) The estimated hours are for direct labor done by experienced personnel. They are calculated based on the conditions given in SBF100-00-001 (Service Bulletin Introduction, section 2.C., "Manpower").
H. Weight and Balance
(1) Weight change: None Index change: None.
I. Electrical Load Data
(1) Not affected.
Service Bulletin Fokker 70/100
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 5
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
J. Software Accomplishment Instructions
(1) Not applicable.
K. References
(1) Fokker 70/100 Aircraft Maintenance Manual (AMM) Fokker 70/100 Service Bulletin (SB):
- SBF100-24-A011
- SBF100-24-032
- SBF100-24-041 Fokker internal reference(s):
- ECR 15713.
L. Publications Affected
(1) This SB affects the publications listed below:
(a) Maintenance Documentation
- Fokker 70/100 Aircraft Maintenance Manual (AMM) - chapter 20-13
- chapter 24-22
- chapter 24-33
- Fokker 70/100 Wiring Manual (WM) - chapter 20-13
- Fokker 70/100 Illustrated Parts Catalog (IPC) - chapter 24-22
- chapter 25-72.
NOTE: See attached Manual Change Notification MCNM F100-141.
(b) Maintenance Programs
Not affected.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 6 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
(c) Special Instructions for Continued Airworthiness (ICA)
The effect of this Service Bulletin on the special ICA is as follows:
YES NO
- Electrical Wiring Interconnection System (EWIS) - X
- Fuel Tank Safety (FTS) - X
- Damage Tolerance of Fatigue Critical Structure - X NOTE: If “YES”, when not already incorporated, the changed ICA will be incorporated in the MRB document within one calendar year from the date of issue of this Service Bulletin. Until then, no actions are required.
(d) Operational Documentation
Not affected.
(2) Report to Fokker Services that this SB has been carried out in the applicable aircraft.
(3) For incorporation of this Service Bulletin in your documentation refer to SBF100-00-001 (Service Bulletin Introduction, section 4 "Incorporation of Service Bulletins in Documentation of Fokker Services").
NOTE: Accomplishment of this SB is only complete with incorporation of the manual change(s) per the ref. MCNM/MCNO, Temporary Revision or General Revision.
M. Interchangeability or Intermixability of Parts
(1) Not applicable.
Service Bulletin Fokker 70/100
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 7
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
2. Material Information A. Material – Price and Availability
(1) You can order the necessary parts as mod kits SB10024043-XU-A, SB10024043-XU-B or SB10024043-XU-C.
(2) You can contact your Fokker Services Account Manager for the price and lead-time of this mod kit.
B. Material Required
(1) These parts, which are necessary to complete this Service Bulletin on 1 aircraft, are not part of the mod kit.
New Part Number Qty Keyword Info Old Part Number Instructions/ * 1 *2 Disposition F900 AR* AR* Torque inspection lacquer Fk05-084** Color: orange
- Local source N157187-6 9 - Nut, selflocking See remark 1 N157187-6 Local source/ Discard N157187-6 2 - Nut, selflocking See remark 2 N157187-6 Local source/ Discard N193920-5 - 2 Lock washer See remark 3 N193920-5 Local source/ Discard
NOTES: * Use as much as necessary ** Refer to the CML for material numbers.
* 1 Applicable to the Fokker 100 Aircraft, * 2 Applicable to Fokker 70 Aircraft.
REMARKS: 1. Nine self-locking nuts PN N157187-6 are required for GLC 1, BTC 1, APC, GLC 2, BTC 2 and/or EPC if in the POST SBF100-24-037 configuration.
2. Two self-locking nuts PN N157187-6 are required if PN SA02217 is installed instead of the original installed PN SA02202 which require lock washers PN193920-5.
3. Two lock washers PN N193920-5 are required if PN SA02202 is installed instead of the original installed PN SA02217 which require self-locking nuts PN157187-6.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 8 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
(2) These mod kit parts are necessary to do this Service Bulletin on 1 aircraft.
New Part Number Qty Keyword Info Old Part Number Instructions/ Disposition
A B C MS35338-41 44* 44* 63 Lock washer - MS35338-41 Discard MS35338-43 46* 46* 73 Lock washer - MS35338-43 Discard MS35338-44 4 4 4 Lock washer - MS35338-44 Discard MS35338-98 12 12 - Lock washer - MS35338-98 Discard MS35338-100 27 27 - Lock washer - MS35338-100 Discard MS35338-137 4 4 4 Lock washer - MS35338-137 Discard N157187-6 - - 62 Nut, self-locking - N157187-6 Discard N193920-5 8 8 - Lock washer - N193920-5 Discard 5964800 8* 4* 2 Lock washer - 5964800 Discard 5995000 8* 4* 2 Lock washer - 5995000 Discard 79800754002 4 4 4 Nut and washer, captive
- 79800754002 Discard
NOTES: * Maximum required quantity is given.
(3) Applicability of mod kits:
Qty A (mod kit SB10024043-XU-A) is applicable to do this Service Bulletin on one aircraft sn 11244 thru 11461.
Qty B (mod kit SB10024043-XU-B) is applicable to do this Service Bulletin on one aircraft sn 11462 thru 11507, 11509, 11511 thru 11520, 11522, 11523 and 11527.
Qty C (mod kit SB10024043-XU-C) is applicable to do this Service Bulletin on one aircraft sn 11521, 11528, 11529, 11532, 11536 thru 11541, 11543, 11545, 11547, 11549, 11551, 11553 thru 11583 and 11585.
C. Tooling – Price and Availability
(1) Not applicable.
D. Drawings Required
(1) Not applicable.
Service Bulletin Fokker 70/100
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 9
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
3. Accomplishment Instructions
General
- Obey the warnings, cautions and safety inst ructions in the procedures we refer you to.
- In case of conflict between the torque values mentioned in AMM task 20-12-00-910-822-A and D and/or 20-13-00-400-812-A and this service bulletin the latter shall govern.
- When for an equipment number two different part numbers are given, apply the torque value for the installed part number.
- Inspect and adjust one contact at a time.
- Use a suitable calibrated torque wrench to apply the correct torque.
- When the required material column shows none, inspect and torque the nut or screw as follows:
• Inspect the contact for corrosion, erosion, decontamination, etc.
• If torque inspection lacquer is present, clean the thread of the stud.
• Loosen the screw or nut two turns.
• Torque the nut to the value given in the Table.
• Apply the torque inspection lacquer.
NOTE: For the heatsinks only a visual inspection is required as indicated in the Table.
- When the required material column shows required materials, inspect and torque the nut as follows:
• Inspect the contact for corrosion, erosion, decontamination, etc.
• Remove and discard the lock washer or self-locking nut.
• If torque inspection lacquer is present, clean the thread of the stud and the normal nut if the nut is re-used.
• Use a new lock washer or new self-locking nut as given in the Table.
• Torque the nut to the value given in the Table.
• Apply the torque inspection lacquer.
WARNING: PUT UP THE APPLICABLE WARNING SIGNS TO PREVENT INJURY TO PERSONS.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 10 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
Part 1: Inspection and Adjustment of the Torque Values for the Fokker 100 Aircraft.
A. Remove all electrical power (Refer to the AMM, chapter 24-00-00-860-912A).
B. Instructions for the Battery relay panel and terminal block in the forward cargo compartment, zone 152.
(1) Remove access panel just before battery relay panel and open the battery relay panel.
Refer to figure 1A or 1B depending on the part number of relays K 0563A and K 0564A.
(2) Find the equipment mentioned in Table 1 and check if either the lock washer, flat washer and nut, or the locking nut and flat washer are installed and re-torque the nuts to the required torque value, refer to General for detailed information. Apply torque inspection lacquer. Use:
- AR torque inspection lacquer pn F900.
Equipment Description Part number Torque values Required material CB0597A GND HDLG Bus Supply Bat Bus 1 3TC14-30 1.5 Nm (13.3 in.lb) Lock washer: 2x pn MS35338-137 CB0598A GND HDLG Bus Supply Bat Bus 2 3TC14-30 1.5 Nm (13.3 in.lb) Lock washer: 2x pn MS35338-137 CB0557A DC EMER Bus Supply Bat Bus 1 160-012-50 3.6 Nm (32.0 in.lb) None CB0558A DC EMER Bus Supply Bat Bus 2 160-012-50 3.6 Nm (32.0 in.lb) None CB0580A Pwr Supply Bat Bus 1 160-012-50 3.6 Nm (32.0 in.lb) None CB0592A Pwr Supply Bat Bus 2 160-012-50 3.6 Nm (32.0 in.lb) None CB0748A APU Eng Start Motor 170-001-160 3.6 Nm (32.0 in.lb) None K 0563A Bat 1 Isolate Contactor M520U5N Main: 1.7 Nm (15 in.lb) Aux/coil 0.4 Nm (3,3 in.lb) Lock washer:
2x pn 5964800 2x pn 5995000 M600-9336 Main: 2.7 Nm (24 in.lb) Aux/coil: 0.8 Nm (7.5 in.lb) Lock washer:
2x pn MS35338-43 2x pn MS35338-41 K 0564A Bat 2 Isolate Contactor M520U5N Main: 1.7 Nm (15 in.lb) Aux/coil 0.4 Nm (3.3 in.lb) Lock washer:
2x pn 5964800 2x pn 5995000 M600-9336 Main: 2.7 Nm (24 in.lb) Aux/coil: 0.8 Nm (7.5 in.lb) Lock washer:
2x pn MS35338-43 2x pn MS35338-41 K 0711A APU Start Contactor Bat 1 SA02202 6 – 6.5 Nm (53.1-57.5 in.lb) Lock washer: 2x pn N193920-5 SA02217 6 – 6.5 Nm (53.1-57.5 in.lb) Nut, self-locking: 2x pn N157187-6 K 0712A APU Start Contactor Bat 2 SA02202 6 – 6.5 Nm (53.1-57.5 in.lb) Lock washer: 2x pn N193920-5 SA02217 6 – 6.5 Nm (53.1-57.5 in.lb) Nut, self-locking: 2x pn N157187-6
Service Bulletin Fokker 70/100
Feb 10/11 SBF100-24-043 Revision 1, Dec 15/11 Page 11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
Equipment Description Part number Torque values Required material K 0713A APU Start Contactor Ext Power SA02202 6 – 6.5 Nm (53.1-57.5 in.lb) Lock washer: 2x pn N193920-5 SA02217 6 – 6.5 Nm (53.1-57.5 in.lb) Nut, self-locking: 2x pn N157187-6
For figure 1A:
Bolt to connect APU start cable AHC0008- B7 to connection strip from CB0748A
For figure 1B:
NOT APPLICABLE
NAS1304-7
6 – 6.5 Nm (53-57.5 in.lb)
None TB2483A* Terminal block aircraft interface battery relay panel.
LRS10-009 .250 stud:
6.7 Nm (60.0 in.lb) None .375 stud:
13.5 Nm (119.5 in.lb) None
NOTE: * This terminal block is not shown in figure 1A or 1B and is located just before the battery relay panel.
Battery Relay Panel Fokker 100 Table 1
(3) Close the battery relay panel and install the access panel.
Service Bulletin Fokker 70/100
SBF100-24-043 Feb 10/11 Page 12 Revision 1, Dec 15/11
Copyright All rights reserved by Fokker Services B.V. (The Netherlands). This document has been supplied by Fokker Services B.V . to its customers on a confidential basis subject to the provisions of an agreement.
Reproduction or disclosure to third parties of this document or any part thereof, or the use of any information contained there in for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with the prior written permission of Fokker Services B.V.
C. Instructions for the Emergency power box, zone 246
(1) Remove access panel 246AZ to get access to the EPC.
Refer to figure 2.
(2) Find the components mentioned in Table 2 and check if either the lock washer, flat washer and nut, or the locking nut and flat washer are installed and re-torque the nuts to the required torque value, refer to General for detailed information. Apply torque inspection lacquer. Use:
- AR torque inspection lacquer pn F900.
Equipment Description Part number Torque values Required material K 5813A BPC HA4N120 Main: 2.7 Nm (24 in.lb) Aux/coil: 0.8 Nm (7.5 in.lb) Lock washer: 6x pn MS35338-43 4x pn MS35338-41 K 1552A EIC M520U5N Main: 1.7 Nm (15 in.lb) Aux/coil: 0.4 Nm (3.3 in.lb) Lock washer: 2x pn 5964800 2x pn 5995000 M600-9336 Main: 2.7 Nm (24 in.lb) Aux/coil: 0.8 Nm (7.5 in.lb) Lock washer: 2x pn MS35338-43 2x pn MS35338-41
T 1554A T 2 AE5902MK1 0.4 Nm (3.5 in.lb) Nut and washer, captive:
4x pn 79800754002
Emergency Power Box Fokker 100 Table 2
(3) Install access panel 246AZ removed in step (1).
D. Instructions for the Electrical Power Center (EPC), zone 245
(1) Remove access panels 245AZ and 245BZ to get access to the EPC.
Refer to figure 3.
(2) Find the equipment mentioned in Table 3 (upper part of EPC) and check if either the lock washer, flat washer and nut, or the locking nut and flat washer are installed and re-torque the nuts to the required torque value. Apply torque inspection lacquer, refer to General for detailed information. Use:
- AR torque inspection lacquer pn F900.