Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt Austria DAI MSB 42

- 0 99/ 1 DAI MSB 42NG

- 035/ 1 Page 1 of 4 3

- May

- 201 3


# M A N D A T O R Y S E R V I C E B U L L E T I N M S B 4 2

- 0 9 9 / 1 M S B 4 2 N G

- 0 3 5 / 1

s upersedes MSB 42

- 099 & MSB 42NG

- 03 5



## I TECHNICAL DETAILS

I.1 Category
Mandatory

.

I.2 Airplanes affected
Type: DA 42, DA 42 M, DA 42 NG, DA 42 M

- NG

Serial numbers: all

I.3 Date of effectivity

1

- May

- 2013

I.4 Time of C ompliance

W ithin 1 00 flight hours from the date of effectivity , but not later than 31

- Dez

- 2013

.
I.5 Subject

I n s p e c t i o n / r e p l a c e m e n t o f s p h e r i c a l r o d e n d b e a r i n g a n d s a f e t y w a s h e r of n o s e l a n d i n g gear ( NLG ) actuator
, P/N X11

- 0006/ 2 with S/N 0 155 and below

. ATA

- Code: 32

- 3 0

I.6 Reason

T he s a f e t y w a s h e r a t t h e N L G a c t u a t o r s s p h e r i c a l r o d e n d b e a r i n g o r i g i n a l l y i n s t a l l e d o n
a c t u a t o r s u p t o S / N 0 155 m i g h t c a u s e i n t e r f e r e n c e b e t w e e n s a f e t y w a s h e r a n d a c t u a t o r
a t t a c h m e n t l e v e r a t t h e N L G l e g w h e n t h e l a n d i n g g e a r i s r e t r acted which b e n t t h e r o d e n d and i n o n e c a s e l e d t o f a i l u r e o f t h e r o d e n d d u e t o c y c l i c l o a d i n g

. T w o m o r e r o d e n d s w i t h

a n i n i t i a t i n g c r a c k a t t h e t h r e a d e d p a r t w e r e f o u n d

. D u e t o t h e nearby s t e e r i n g l i n k a g e , a f a i l e d r o d e n d b e a r i n g w i t h t h e LDG

- switch i n r e t r a c t e d p o s i t i o n m a y c a u s e i n t e r f e r e n c e w i t h the rudder control.

T h i s S e r v i c e B u l l e t i n d e s c r i b e s t h e w o r k n e c e s s a r y t o r e p l a c e t h e s p h e r i c a l r o d e n d b e a r i n g
a n d t o r e p l a c e t h e s a f e t y w a s h e r with o n e o f t h e n e w d e s i g n w i t h r e d u c e d d i a m e t e r i n c a s e
a s af ety washer of the old design was installed to the NLG actuator.

I.7 Concurrent Documents

None.Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt Austria DAI MSB 42

- 0 99/ 1 DAI MSB 42NG

- 035/ 1 Page 2 of 4 3

- May

- 201 3

I.8 Approval

T h e t e c h n i c a l c o n t e n t o f t h i s d o c u m e n t h a s b e e n a p p r o v e d u n d e r t h e a u t h o r i t y o f D O A r e f

. EASA.21J.052.

I.9 Accomplishments / Instructions

I d e n t i f y a n d i f r e q u i r e d m o d i f y t h e N L G

- a c t u a t o r b y c o m p l y i n g w i t h W I

- M SB 42

- 09 9 / WI

- MSB 42NG

- 035 , latest effective issue

. D o n o t i n s t a l l a N L G

- actuator
, P / N X11

- 0006/2 w i t h S / N 0 1 5 5 o r b e l o w a s a r e p l a c e m e n t part u n l e s s m o d i f i e d i n a c c o r d a n c e w i t h WI

- M SB 42

- 0 9 9 / WI

- M S B 4 2 N G

- 035

, l a t e s t effective issue

.
I.10 Mass (Weight) and CG
The change in mass and CG is negligible.



## II PLANNING INFORMATION

II.1 Material and Availability

See WI

- M SB 42

- 09 9 / WI

- MSB 42NG

- 035 , latest effective issue.

Materials are available from Diamond Aircraft Ind ustries.

II.2 Special Tools

None.

II.3 Labour Effort
Inspection only: 0.5 hours Replacement: a pprox. 2 .5 hours

II.4 Credit

A f t e r p e r f o r m i n g t h e work a n d i f replacement o f s a f e t y w a s h e r o r r o d e n d b e a r i n g w a s necessary : Required m aterial according to WI

- MSB 42

- 0 9 9 / WI

- MS B 42NG

- 035 , latest effective issue.

II.5 Reference Documents

DA 42 Series Airplane Maintenance Manual, Doc. No. 7

. 01

. 01 , latest effective issue. DA 42 NG Airplane Maintenance Manual, Doc. No. 7.01.15, latest effective issue.Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt Austria DAI MSB 42

- 0 99/ 1 DAI MSB 42NG

- 035/ 1 Page 3 of 4 3

- May

- 201 3



## III REMARKS

1. All work m u s t b e done b y a c e r t i f i e d a i r c r a f t service s t a t i o n o r a c e r t i f i e d a i r c r a f t maintenance mechanic.

2. A l l w o r k

, p a r t i c u l a r t h o s e t h a t a r e n o t e s p e c i a l l y d e s c r i b e d i n t h i s S ervice B u l l e t i n , m u s t be done in accordance w ith the referenced Maintenance M anual.

3. Completion of all wo rk must be recorded in the log book.

4. I f m a t e r i a l a n d / o r l a b o r h o u r s a r e s u b j e c t t o b e c r e d i t e d t h r o u g h D i a m o n d A i r c r a f t I n d u s t r i e s , t h e S e r v i c e B u l l e t i n m u s t b e p e r f o r m e d b y a n a u t h o r i z e d D i a m o n d S e r v i c e C e n t e r w i t h i n t h e t i m e o f c o m p l i a n c e

. T h e W a r r a n t y A p p l i c a t i o n i n c l

. W o r k R e p o r t m u s t be sent no later than 30 days after the performance of this Service Bulleti n

. 5. In case of doubt contact Diamond Aircraft Industries GmbH.Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt Austria DAI MSB 42

- 0 99/ 1 DAI MSB 42NG

- 035/ 1 Page 4 of 4 3

- May

- 201 3



## EXECUTION REPORT TO SERVICE BULLETIN M SB 42

- 09 9 /1 MSB 42NG

- 0 35 /1

AIRPLANE DATA

Airplane Serial Number:

_________________ Airplane Registration:

_________________ Airplane Operator:

_________________ Hours of operation of airplane:

_________________ No. of landings:

_________________ Hours of operation

- engine : LH

_________________
RH

_________________ Typical operation of airplane: private, club, training, other

______________
L ast maintenance : date & airplane TSN

_________________

NLG

- Actuator S/N installed :

_________________

__________________________ ________ Date, Name, Sign

Please fax the completed form to Fax No. +43

- 2622

- 26700

- 1369 or e

- mail to airworthiness@diamond

- air.atDiamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 1 of 6 3

- May

- 201 3


# WORK INSTRUCTION

WI

- M SB 4 2

- 09 9

WI

- M SB 42NG

- 0 35

I GENERAL INFORMATION

I.1 Subject

I n s p e c t i o n / r eplace m e n t o f s p h e r i c a l r o d e n d b e a r i n g a n d s a f e t y w a s h e r of nose landing gear (NLG) actuator.

I.2 Reference Documents

DA 4 2 Series Airplane Maintenance Manual, Doc. No. 7 .02.01 , latest effective issue.

DA 42 NG Airplane Maintenance Manual, Doc. No. 7.02.15 , latest effective issue.

I.3 Remarks

a) All w o r k m u s t b e done b y a c e r t i f i e d a i r c r a f t s e r v i c e s t a t i o n o r a c e r t i f i e d a i r c r a f t maintenance mechanic. b) A l l w o r k

, p a r t i c u l a r t h o s e t h a t a r e n o t e s p e c i a l l y d e s c r i b e d i n t h i s w o r k i n s t r u c t i o n , must be done in accordance with the referenced maintenance manual. c) For conversion factors between SI and US/Imperial units refer to AMM Chapter 02. d) It is recommended to print this Work Instructio n in color. e) In case of doubt, contact Diamond Aircraft Industries GmbH.



## II DRAWINGS, SPECIAL TOOLS & MATERIALS

II.1 Drawings

N one

.

II.2 Special Tools

N one

.Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 2 of 6 3

- May

- 201 3

II.3 Material

Quantity Part No. Description 1 X11

- 0006

- SMRCD10IRMR.7403

o r X11

- 0006

- GARSW

- 10R R (hls/fluro) spheric al rod end bearing

a. r. X11

- 0006

- 00

- 00.02 , Rev B safety washer (diameter 24 m m) 1 X 11

- 0006

- 00

- 00.9 8 modification sticker & protection foil

Materials are available from Diamond Aircraft Industries.

II.4 Consumable s

Quantity Part No. Description

a. r.

- Stainless steel safety wire

- Ø 0,032 inch

a. r.

- zinc chromate primer

a. r.

- lacquer

a. r. i.a.w. AMM, section 12

- 30 anti corrosion coating

Consumables may be procured locally or from Diamond Aircraft Industries



## III I NSTRUCTIONS

1 Identify part number (P/N) and serial number (S/N) of nose landing gear (NLG) actuato r (use inspection mirror )

.

NOTE: NLG actuators with P/N X11

- 0006/2A are not affected by this Service Bulletin

. safety washer

rod end bearingDiamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 3 of 6 3

- May

- 201 3

2 If NLG actuator has P/N X11

- 0006/2 an d S/N is 015 6 or higher, proceed with item 1 2

.

3 If N L G a c t u a t o r h a s P / N X11

- 0006/2 a n d S / N i s 0 1 5 5 o r l o w e r r e m o v e N L G a c t u a t o r from the aircraft in accordance with AMM, section 32

- 20.

NOTE: I t i s n o t n e c e s s a r y t o r e m o v e t h e a c t u a t o r c o m p l e t e l y f r o m t h e a i r c r a f t

. T h e f o l l o w i n g w o r k c a n b e d o n e w i t h t h e a c t u a t o r r e m a i n i n g c o n n e c t e d to the NLG brace assembly and to the hydraulic system.

4 R e m o v e s p h e r i c a l r o d e n d b e a r i n g f r o m t h e N L G a c t u a t o r p i s t o n i n a c c o r d a n c e w i t h AMM, section 32

- 30. Discard spherical rod end bearing.

5 Measure diameter of s afety washer

.

Possible diameters are:

- 27 mm ( old design , picture on the left )

- 24 mm ( P/N X11

- 000 6

- 00

- 00.02 , Rev B

, new design, picture on the right )

.

6 If diameter of s afety washer is 27 mm replace it with one of the new design with 4 holes for lock wire and with reduced diameter of 24 mm , P/N X11

- 0006

- 00

- 00.02 , Rev B

.

7 Re

- a s s e m b l e N L G a c t u a t o r w i t h a n e w s p h e r i c a l r o d e n d b e a r i n g , i n a c c o r d a n c e w i t h AMM , section 32

- 30. old design new design

27 mm 2 4 mmDiamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 4 of 6 3

- May

- 201 3

8 S e c u r e t h e c o u n t e r n u t w i t h l o c k w i r e

. R o u t e t h e l o c k w i r e t h r o u g h b o t h h o l e s o n o n e side of t h e s a f e t y w a s h e r , a s s h o w n i n t h e p i c t u r e

. L o c k w i r e m u s t n o t b e r o u t e d o v e r the circumferential e d g e s o f t h e s a f e t y w a s h e r a s l o c k wire m i g h t r e d u c e c l e a r a n c e between safety washer and actuator attachment lever at the NLG leg.

9 C o m p l e t e i n f o r m a t i o n o n s t i c k e r w i t h d a t e a n d n a m e o f m a i n t e n a n c e o r g a n i z a t ion. C l e a n a r e a o f t h e s t i c k e r s s i z e o n t h e N L G a c t u a t o r w i t h c l e a n a n d f r e s h a c e t o n e a n d apply it to the NLG actuato r. Cover sticker with transparent protection foil.

10 Reinstall NLG act uator in accordance with AMM, section 32

- 30

.

11 A p p l y a n t i

- c o r r o s i o n c o a t i n g o n actuator c o n n e c t i o n s i n a c c o r d a n c e w i t h AMM

, s ection 12

- 30. modified acc. to MSB 42

- 099 / MSB 42NG

- 035 Safety Washer replaced by P/N X11

- 0006

- 00

- 00.02, Rev B Date: ______________ Name: ______________ safety washerDiamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 5 of 6 3

- May

- 201 3

12 Examine a c t u a t o r a t t a c h m e n t le v e r a t t h e N L G l e g

. I n c a s e m a r k s o r i g i n a t i n g f r o m i n t e r f e r e n c e w i t h t h e s a f e t y w asher a r e f o u n d

, a p p l y z i n c c h r o m a t e p r i m e r t o t h e i n t e r f e r e n c e m a r k s a n d s e a l w i t h a p p r o p r i a t e l a c q u e r , r e f e r t o m a n u f a c t u r e r s specifications.

13 Clean working area and check for foreign objects

.Diamond Aircraft Industries GmbH N. A. Otto

- Straße 5 A

- 2700 Wiener Neustadt WI

- M SB 4 2

- 09 9 WI

- M SB 42NG

- 0 35 Revision 1 Page 6 of 6 3

- May

- 201 3

14 C a r r y o u t a l a n d i n g g e a r e x t e n s i o n a n d r e t r a c t i o n t e s t i n a c c o r d a n c e w i t h A M M

, s e c t i o n 32

- 30 a n d c h e c k f o r p o s i t i v e c l e a r a n c e b e t w e e n N L G a c t u a t o r s a f e t y w a s h e r a n d

a c t u a t o r a t t a c h m e n t l e v e r a t t h e N L G l e g w h e n t h e l a n d i n g g e a r i s r e t r a c t e d (us e inspec tion mirror )

.

If t h e r e i s n o p o s i t i v e c l e a r a n c e b e t w e e n N L G a c t u a t o r s a f e t y w a s h e r a n d a c t u a t o r attachment lever at the NLG leg, check adjustment of NLG actuator length according to A M M

, s e c t i o n 3 2

- 2 0

. I n c a s e n o p o s i t i v e c l e a r a n c e c a n b e a d j u s t e d

, c o n t a c t D i a m o n d Aircraft Industries GmbH

.
15 Perform functional check of altered, repaired and new parts.

16 Test all systems in working area for function.

17 Make necessary entries into aircraft logs

.

18 F i l l i n e x e c u t i o n r e p o r t a n d s e n d i t t o D i a m o n d A i r c r a f t I n d u s t r i e s via Fax to +43

- 2622

- 26700

- 1369 or email to airworthiness@diamond

- air.at

. positive clearance