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MSB1078-196 Page 1 of 4 I GROB 14 July 2014 Replaces Issue: AIRCRAFT SERVICE BULLETIN NO. MSB1078-196 I. TECHNICAL DETAILS
1.1 Category:
Mandatory Note: GROB issues Service Bulletins of category Mandatory (MSBs), if the information or instructions have a safety intent either related to design or conformity and to publish revisions of manuals (AFM, AMM, IPC). However, according to Article 20
(1) of Regulation (EC) No. 216/2008, only EASA may issue mandatory information, in the form of an Airworthiness Directive (AD), in order to react to a given safety problem. Service Bulletins classified Mandatory issued by GROB's design organisation do not have a legally mandatory character equivalent to an AD, cannot have enforcement implications and, therefore, serve as information or instruction by GROB only. This also applies to cases where a Service Bulletin is published in anticipation of an AD.
Note: This service bulletin is issued in anticipation of an AD. Issue of an AD will not necessarily lead to revision of this service bulletin.
1.2 Airplanes affected:
G 115E all S/N G 115EG all S/N
1.3 Time of Compliance:
Part A: Before next IFR or VFR Night flight, or within next 50FH, whichever comes first.
1.4 Subject:
ATA-Code: 80-00 Starting Inspection of starter solenoid
1.5 Reason:
Grob received a report about a total loss of electrical power in IMC. Root cause was found to be a defect starter solenoid. The starter solenoid had an internal defect causing a short circuit. The defect cannot be detected by visual inspection.
This Service Bulletin is intended to prevent an unsafe condition. The configuration of the aircraft is not affected by this Service Bulletin.
1.6 Concurrent documents:
Corresponding AMM
1.7 Approval Note:
The technical content of this document is approved under the authority of EASA Design Organization Approval No. EASA.21J.030.
1078-196 MSB, Inspection of starter solenoid G 115E, EG Grob Aircraft AG, Lettenbachstrasse 9, D-86874 Tussenhausen-Mattsies
Page 2 of 4 MSB1078-196 I GROB 14 July 2014 AIRCRAFT Replaces Issue:
1.8 Accomplishment/ Instructions Note: The AMM references in this Service Bulletin are for G 115E. For G 115EG use the relevant Job Guide.
Part A One-time Inspection
1.8.1 Disconnect the aircraft battery, refer to AMM Chapter 24-30.
1.8.2 Remove the Engine Cowlings, refer to AMM Chapter 71-10
1.8.3 Visually inspect the starter. Make sure that the power connection bolts have the same length, refer to Figure 1 for defective item and Figure 2 for correct installation.
09L Figure 1: Incorrect connection bolts Figure 2: Correct installation
1.8.4 Release the two bolts on the starter solenoid. Carefully pull the solenoid away from the starter housing until the dead stop. Make sure that the solenoid plunger is still attached, refer to Figure 3. Attach the solenoid to the starter with the two bolts.
Figure 3: Starter solenoid at dead stop 1078-196 MSB, Inspection of starter solencid G 115E, EG Grob Aircraft AG, Lettenbachstrasse 9, D-86874 Tussenhausen-Mattsies
MSB1078-196 Page 3 of 4 • GROB 14 July 2014 AIRCRAFT Replaces Issue:
1.8.5 If the starter is OK, do step 1.8.7.
1.8.6 If the starter is not OK or in case of doubt, replace the Starter.
1.8.7 Install the Engine Cowlings, refer to AMM Chapter 71-10.
1.8.8 Connect the aircraft battery, refer to AMM Chapter 24-30.
1.8.9 For G 115E approved for IFR: Make and install a placard " IFR operation in VMC only", refer to Figure 4.
VA 130 DIAS MASANT 2360 28' e G-BTAS NAV 2 CH20
399.97 _*2 1802 3 Figure 4: Limitation placard
1.8.10 Release aircraft into service according to national requirements.
Part B Reserved for the terminating action
1.9 Repetitive Actions none 1078-196 MSB, Inspection of starter solenoid G 115E, EG Grob Aircraft AG, Lettenbachstrasse 9, D-86874 Tussenhausen-Mattsies
GROB
AIRCRAFT II. PLANNING INFORMATION Weight and CG N/A
2.2 Material and Availability N/A
2.3 Special Tools N/A
2.4 Labor costs
2.5 Reference documents Corresponding AMM and IPC
2.6 Credit N/A III. REMARKS The instructions in paragraph 1.8 have to be accomplished and certified in the logbook by authorized staff:
- In EASA countries according to Article 5 VO EG 2042/03 (VO EG 1056/2008) Appendix III - Part 66
- in non-EASA countries according to national regulations with respect to maintenance.
If you have sold your aircraft in the meantime, we kindly ask you to forward this information to the new owner and to provide us with the name and address of the new owner as well as with the respective serial number.
For questions and assistance please contact:
Product Support, phone: +49 8268 998105 fax: +49 8268 998200 e-mail: productsupport@grob-aircraft.com 1078-196 MSB, Inspection of starter solenoid G 115E, EG Grob Aircraft AG, Lettenbachstrasse 9, D-86874 Tussenhausen-Mattsies