Service Bulletin 

 Fokker Services B.V. 

 Prepared Function / Note Date 

 jeffrey.keetlaer Jan 20/14 

 General Check 

 aroon.siriphant S/TFSE Jan 20/14 

 Manager Final Approval 

 aroon.siriphant S/TFSE Jan 22/14 

 Office of Airworthiness Approval 

 visser-hv01800 S/TW Jan 23/14 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except with 

the prior written permission of Fokker Services B.V. 

EASA approved procedure for electronic sign-off

F100/70 Generic SB 

SBF100-53-124 

Revision - 

FUSELAGE - TAIL SECTION

A One-Time Inspection of Oblique Frame 67-2 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 1 of 11 

1. General Information

A. General 

B. Table of Contents 

• Section 1: General Information 

• Section 2: Planning Information 

• Section 3: Material Information 

• Section 4: Accomplishment Instructions 

• Service Bulletin Reporting Quality Form 

and if applicable attachments: 

• List of drawings/parts lists 

• Parts List Local source (PLL) 

• Parts List Supply (PLS) 

• Required drawings 

C. Service Bulletin Revision History 

Revision Date (Mmm dd/yy) Reason for Revision 

- Refer to footer First Release 

 

FUSELAGE

Tail Section - A One-Time Inspection of Oblique Frame 67-2 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 2 of 11 

2. Planning Information

A. Effectivity 

(1) F28 Mark 0070/0100 aircraft serial number(s): 

11244 thru 11585. 

NOTE 1: Aircraft 11300 is already compliant with this one-time inspection 

 Service Bulletin. 

NOTE 2: Aircraft 11310 has (on the LH and RH side of Oblique Frame 67-2) an 

 existing repair per CAS-01726-E1D1O4, which however does not 

 comply with the repair requirements of SBF100-53-125. Contact 

 Fokker Services BV before further flight for special inspection and 

 repair instructions. 

B. Concurrent Requirements 

(1) Not applicable. 

C. Reason 

(1) Service experience has shown that cracks can occur in the primary structure of the 

aircraft at Oblique Frame 67-2 (p/n D37208-001 and/or p/n D37208-002) in the tail 

section. A one-time inspection is required to investigate if cracks have occurred on 

Oblique Frame 67-2. At a later stage a repetitive inspection will be included in the 

Airworthiness Limitations Section (ALS), report SE-623, of the Instructions for 

Continued Airworthiness. 

(2) If cracks are found during the accomplishment of this Service Bulletin a repair has 

to be accomplished before further flight. Repair procedures are provided in Service 

Bulletin SBF100-53-125. 

D. Description 

(1) This Service Bulletin tells you how to: 

- Gain access to the tail section and Oblique Frame 67-2 

- Inspect the Oblique Frame 67-2 for cracks on both sides 

- Repair as applicable through reference to SBF100-53-125 

- Close up the work area. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 3 of 11 

E. Compliance 

(1) Recommended 

Fokker Services recommends the accomplishment of this Service Bulletin only for 

aircraft with more than 29.000 Flight Cycles (FC) at the issue date of this Service 

Bulletin as follows: within 500 (FC) or within one year after the date of issue of this 

Service Bulletin (whichever comes first).

NOTE 1: 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 website for the publication of a (Proposed) Airworthiness 

Directive for comments. 

NOTE 2: A repeat inspection will be incorporated in the ALS for both repaired 

and unrepaired (undamaged) configuration. 

F. Approval 

(1) The technical content of this document is approved under the authority of DOA ref. 

EASA.21J.059. 

G. Manpower 

(1) Approximately 1 man-hour is necessary to do this Service Bulletin on one aircraft. 

(2) This table of manpower will help you to schedule and do this Service Bulletin: 

Elapsed time

(hours)

Removal - - -

Modification

Inspection

Installation - - -

Testing - - -

Total 1.0 1.0

1.0

Instructions Men Man-hours

1 1.0

(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. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 4 of 11 

I. Electrical Load Data 

(1) Direct Current (DC) Loads: 

(a) Not changed. 

J. Software Accomplishment Summary 

(1) Not applicable. 

K. References 

(1) Fokker 70/100 Aircraft Maintenance Manual (AMM) 

Fokker 100 Service Bulletin (SB): 

- SBF100-53-125 

Fokker internal reference(s): 

 - ECR 016054 

 - ECR 016055 

 - CAS-01726-E1D1O4. 

L. Publications Affected 

(1) This Service Bulletin affects the publications listed below: 

(a) Maintenance Documentation

Not affected. 

(b) Maintenance Programs

Not affected. 

(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 

- Fokker 70/100 Airworthiness Limitations Section (ALS): 

• Fuel Tank Safety (FTS) - X 

• Damage Tolerance of Fatigue Critical Structure (FCS) - X 

• Certification Maintenance Requirements (CMR) - X 

NOTE: If “YES”, when not already incorporated, the changed ICA will be 

incorporated in the MRB, the Airworthiness Limitations Section (ALS) 

and/or the AMM document(s) within one calendar year from the date 

of issue of this Service Bulletin. Until then, no actions are required. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 5 of 11 

(d) Operational Documentation

Not affected. 

(2) Report to Fokker Services that this Service Bulletin has been carried out on the 

applicable aircraft. 

(3) You have the possibility to send your SB feedback to Fokker Services per “Service 

Bulletin Reporting Quality Form”. This form is located on the last Service Bulletin 

page. 

(4) 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”). 

M. Interchangeability or Intermixability of Parts 

(1) Not applicable. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 6 of 11 

3. Material Information

A. Material – Price and Availability 

(1) Not applicable. 

B. Material Required 

(1) Not applicable. 

C. Tooling – Price and Availability 

(1) Not applicable. 

D. Tooling Required 

(1) The special tool(s), which are necessary to complete this Service Bulletin on 1 

aircraft and are not part of the mod kit are described in table below. 

Part Number Qty Description

28-0-1219G 1 Speed brake ground-lock bar. 

 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 7 of 11 

4. Accomplishment Instructions

A. Clear the area around the speedbrakes. 

Refer to Aircraft Maintenance Manual 

B. Open and secure the speedbrakes in accordance with AMM Task 53-40-00-210-856-A. 

C. Put an access platform under the open speedbrakes and secure the speedbrakes 

(1) Install the Speed Brake ground-lock bar tool pn 28-0-1219G. 

D. If necessary, clean the inspection area and the items to be inspected. Do not remove 

any lubricants or surface protection. 

Refer to figures 1, 2 and 3 

E. Perform a Detailed Inspection on Oblique Frame 67-2. 

(1) Pay attention to the areas shown in figure 1. Check for cracks or crack initiation in 

the lower boom and vertical web. 

(2) Report all crack findings to Fokker Services BV via 

TechnicalServices@Fokker.com. Include the aircraft serial number, flight cycles 

and flight hours in the report. Supply several clear pictures of the crack location 

and report the crack length. Figures 2 and/or 3 must be used to report your 

findings. 

F. Any crack must be repaired before further flight, refer to SBF100-53-125. 

G. Job close-up 

(1) Remove all tools, materials and equipment from the work area. Make sure that the 

area is clean. 

(2) Remove the Speed Brake ground-lock bar tool pn 28-0-1219G. 

(3) Remove the access platform from the work area. 

(4) Close the speedbrakes in accordance with AMM Task 53-40-00-210-856-A. 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 8 of 11 

 

Possible crack location 

on rear face, LH upper 

section of oblique frame 67-2 

Possible crack location 

on rear face, RH upper 

section of oblique frame 67-2 

Possible crack locations Oblique Frame 67-2 

Figure 1 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 9 of 11 

 

Crack identification Oblique Frame 67-2 (LH shown only) 

Figure 2 

A

A

Indicate if the crack is located in 

the LH or RH oblique frame. 

Section A-A

D.O.F 

a b 
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 10 of 11 

 

Crack identification Oblique Frame 67-2 (LH shown) 

Figure 3 

a

b
Service Bulletin 

Fokker Services B.V. 

Status: 

Released 

Revision: 

- 

Released date: (Mmm dd/yy) 

Jan 23/14 

Security class: 

RESTRICTED 

F100/70 Generic SB no.: 

SBF100-53-124 

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 therein for purposes other than explicitly allowed by the aforesaid agreement, is not permitted except 

with the prior written permission of Fokker Services B.V. 

Page 11 of 11 

SB Title: A One-Time Inspection of Oblique Frame 67-2

Use this Service Bulletin Reporting Quality Form to tell us your perception of the quality of the Service 

Bulletin. The reported data that you provide to us will be used to analyze areas of difficulties and to take 

corrective actions to further improve the quality of our Service Bulletins. We thank you for the time you 

have taken in completing this form. 

* Rate the scale of 1 to 4, with 1 the lowest score and 4 the highest score. 

Chapters * 1 2 3 4 

a) Quality rating of this SB (overall) □ □ □ □

b) Quality rating of the Planning Information □ □ □ □

c) Quality rating of the Material Information □ □ □ □

d) Quality rating of the Accomplishment Instructions □ □ □ □

e) Quality rating of the Test Instructions (if applicable) □ □ □ □

f) Quality rating of the Illustrations or Drawings (if applicable) □ □ □ □

g) Timely delivery of the SB □ □ □ □

If you have had difficulties with one of the chapters of this Service Bulletin and/or one of your rating(s) is 

lower than 3, please give a short description of the issue. 

Comments:

Operator: Date:

Name / Title: 

Please return this form to: Fokker Services B.V. 

Technical Services, Quality Department 

P.O. Box 1357 

2130 EL Hoofddorp 

The Netherlands 

Fax: +31 (0) 88 6280111 or E-mail: technicalservices@fokker.com