### MSB 1 078-196 Page 1 of4 14 July 2014 Rep la ces Issue: 

# a 0 AIRCRAFT 

# SE RVI CE BULL ETIN NO. M S B1078- 196 I. TECHNICAL DETAILS 1 . 1 Category : Mandatory Note: GROB iss ues Service Bulletins of categ ory Mandatory (MSB s ) , if the information or instru ct io ns have a safety intent e ith e r related to des ign or conformity and to publish revisions of manuals (AFM , AMM , IPC) . However, according to Article 20 (1) of Regulation ( E C) No . 216/2008, only EASA may i ssue mandatory information, in the form of an Airworthiness D i rective (AD), i n order to react to a given safety probl em . Service Bu lletins classified Man datory issued by GROB ' s des ign organisat ion do not have a le gally mandatory c haracter eq uiva lent to an AD , cannot have enforcement impli cation s and , therefore, serve as inform ation or instruction by GROB only. This al s o applies to cases where a Service Bulletin is pub l ished i n anticipat ion of an AD . Note: This serv ice bulletin is issued in anticipat ion of an AD . Issue of a n AD will not necessarily lead to revision of this service bulletin . 1.2 Airplanes affected: G 115E all SI N G 115EG all SI N 1.3 Time of Complian ce : Part A : 

### Befo re next IFR or VFR N ight flight, or within next 50FH , wh ich ever comes fi rst. 1 .4 Subject: AT A- Code : 80-00 Starting Inspection of starter so lenoid 1 . 5 Reason : Grob rece ived a repo rt about a tota l loss of e l ectrica l power in IMC . Root cause was found to be a defect starter solenoi d. The starter solenoid had an internal d efect causing a short circuit. The defect cannot be detected by v isua l inspec ti on . This Service Bullet i n is i ntended to prevent an u nsafe cond ition . The configuration of the a ir craft is not affected by this Service Bulletin. 1 .6 Concurrent documents : Corresponding AMM 1. 7 A pproval Note : The techn i cal content of this document is approved under the aut hority of EASA Design Orga n ization Approval No . EASA.21J .030.

1078-196 MSB. l nspectiCn or s1arter saenoid 

# G 11 5 E, EG Grob Aircraft AG , Lettenbac hstrasse 9 , D-86874 Tussenhausen - MattsiesMSB1078-196 Page 2 of4 14 July 2014 Replaces Issue : 

### 1.8 Accomp l is hment/Instruction s 

### A I RCRAFT Note: The AMM references in this Service Bullet i n are for G 115E. For G 115EG use th e re l evant Job Guide. 

### Part A One-time In spect ion 1 . 8.1 D i sconnect 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 i nstallation.

Figure 1: Incorrect connection bolts Fi gure 2 : Correct installation 1.8.4 Release the two bolts on the starter so l enoid . Carefully pull the soleno i d away from the starter housing until the dead stop. Make sure that the sol enoid plunger is still attached, refer to Figure 3 . Attach the solenoid to the starter w ith the two bolts.

Figure 3: Starter solenoid at dead stop

1 078· 1 96 M$8, Inspection o f starter sol en oid 

# G 115E, EG Grob Airc raft AG, Lettenbachstrasse 9, D-86874 Tussenhausen - MattsiesMSB1078-196 Page 3 of 4 1 4 July 2014 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 Eng i ne Cowl i ngs , refer to AMM Chapter 7 1- 10. 1 . 8.8 Connect the a i rcraft battery, refer to AMM Chapter 24-30. 

### AIRCRAFT

1.8.9 For G 115E approved fo r IFR: Make and install a placard" I FR operation in VMC only" , refer to Figure 4 .



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**rid>** Figure 4 : Lim itation placard 1.8.1 0 Release aircraft i nto service accord i ng to national requirements . 

### Part B Rese rved for the terminating action 

### 1 .9 Repetitive Actions none



# G 115E, EG Grob Airc raft AG , Lettenbachstrasse 9 , D- 86874 T ussenhausen-MattsiesMSB1 078-196 Page 4 of 4 14 July 2014 Replaces Issue : 

## II. PLANNING INFORMATION 2.1 Weight and CG 

## N/A 2.2 Material and Availability 

## N

/ A 2 . 3 Spec ial Tools 

## N/A 2.4 Labor costs 

## N/A 2.5 Reference documents Co rrespond i ng AMM and IPC 

### 2.6 Credit 

## N

/ A 

## Ill. REMARKS 

# A A IR C R AF T

The instructions in paragraph 1.8 have to be accompl ished and certified in the logbook by authorized staff:

- in EASA countr i es accord i ng to Article 5 VO EG 2042/03 (VO EG 1 056/2008) A p pend ix I ll - Part 66 - i n no n -E ASA cou ntri es accord i ng to nationa l regu lat ions with respect to ma i ntenance. If you have so ld your a i rcraft i n the mean ti me , we kindly ask you to forward th i s info rmat ion to the new owner and to p rovide us with the name and address of the new owner as well as with the respective seri a l number . For questions and assistance please contact: p h o n e : fax : e- m ail :

1 07&- 1 96 MSS . I nspection ol starter SOlenoid Product Support , +49 8268 998 1 05 +49 8268 998200 productsupport@grob-a ircraft . com



# G 11 5E, EG Grob Airc raft AG , Le tte nbachstrasse 9 , D-86874 T ussenhau sen-Mattsies