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Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt Austria DAI MSB 42-095 DAI MSB 42NG-026 Page 1 of 4 11-Nov-2011
MANDATORY SERVICE BULLETIN MSB 42-095 MSB 42NG-026
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: 42.004 through 42.321, 42.324 through 42.347,
42.349, 42.351, 42.353 through 42.357,
42.359 through 42.386, 42.388, 42.389, 42.391,
42.394, 42.396, 42.399, 42.405 through 42.409,
42.412 through 42.416, 42.427,
42.AC001 through 42.AC152,
42.M001 through 42.M011, 42.M015 through 42.M019,
42.M021, 42.M022,
42.N001 through 42.N011, 42.N013, 42.N018, 42.N019,
42.N023 through 42.N028, 42MN001 through 42.MN008 provided that damper D60-3277-10-00_01 has NOT been installed on both MLG legs I.3 Date of effectivity 11-Nov-2011 I.4 Time of Compliance Within 200 flight hours, but not later than 31-Dec-2012.
I.5 Subject Replacement of MLG damper nut.
ATA-Code: 32-10 I.6 Reason In one case the nut in the MLG damper has loosened itself during operation. This might lead to the MLG leg getting jammed in the gear bay. This Service Bulletin describes the work necessary to secure the nut in the MLG damper.
Note: Diamond Aircraft Industries recommends doing RSB 42-089 / RSB 42NG-017. The measures prescribed by this service bulletin are included in RSB 42-089 / RSB 42NG-017.
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt Austria DAI MSB 42-095 DAI MSB 42NG-026 Page 2 of 4 11-Nov-2011
I.7 Concurrent Documents None.
I.8 Approval The technical information or instructions contained in this document relate to the Design Change Advisory No. MÄM 42-434, which has been approved under the authority of EASA Design Organization Approval ref. EASA.21J.052.
The technical content of this document has been approved under the authority of DOA ref.
EASA.21J.052.
I.9 Accomplishments / Instructions If RSB 42-089 / RSB 42NG-017 has been done on both MLG dampers:
Record MSB 42-095 / MSB 42NG-026 as performed.
Note: Doing RSB 42-089 / RSB 42NG-017 on both MLG dampers is included in Work Instruction “Conversion to DA 42 NG / M-NG” Rev. 7 and later.
If RSB 42-089 / RSB 42NG-017 has not been done on both MLG dampers:
Comply with WI-MSB 42-095 / MSB 42NG-026, latest effective issue.
Note: WI-MSB 42-095 / MSB 42NG-026 is attached to this document.
Note: Diamond Aircraft Industries recommends to do RSB 42-089 / RSB 42NG-017 on both MLG dampers. The measures prescribed by this service bulletin are included in RSB 42-089 / RSB 42NG-017.
I.10 Mass (Weight) and CG The change in mass and CG is negligible.
II PLANNING INFORMATION II.1 Material and Availability See WI-MSB 42-095 / MSB 42NG-026, latest effective issue.
Materials including drawings are available from Diamond Aircraft Industries.
II.2 Special Tools None.
II.3 Labour Effort Approx. 2 hours.
II.4 Credit For all AC within warranty period:
2 man hours of work.
Material according to WI-MSB 42-095 / MSB 42NG-026, latest effective issue.
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt Austria DAI MSB 42-095 DAI MSB 42NG-026 Page 3 of 4 11-Nov-2011
II.5 Reference Documents Diamond Aircraft DA 42 Series Airplane Maintenance Manual, Doc. No. 7.01.01, latest effective issue.
Diamond Aircraft DA 42 NG Airplane Maintenance Manual, Doc. No. 7.01.15, latest effective issue.
III REMARKS
1. All work must be done by a certified aircraft service station or a certified aircraft maintenance mechanic.
2. All work, particular those that are no t especially described in this Service Bulletin, must be done in accordance with the referenced Maintenance Manual.
3. Completion of all work must be recorded in the log book.
4. If material and /or labor hours are subject to be credited through Diamond Aircraft Industries, the Service Bulletin must be carried out by an authorized Diamond Service Center and the Warranty Applicati on incl. Work Report must be sent not later than 30 days after the end of time of compliance.
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 42-095 DAI MSB 42NG-026 Page 4 of 4 11-Nov-2011
EXECUTION REPORT TO
SERVICE BULLETIN MSB 42-095 MSB 42NG-026
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 ______________
__________________________________ Date, Name, Sign
Please fax the completed form to Fax No. +43-2622-26700-1369 or e-mail to airworthiness@diamond-air.at
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt WI-MSB 42-095 WI-MSB 42NG-026 Revision 0 Page 1 of 4 11-Nov-2011
WORK INSTRUCTION WI-MSB 42-095 / WI-MSB 42NG-026 Replacement of self-locking nut in MLG damper
I GENERAL INFORMATION I.1 Subject Replacement of nut in MLG damper I.2 Reference Documents Diamond Aircraft DA 42 Series Airplane Maintenance Manual, Doc. No. 7.02.01, latest effective issue.
Diamond Aircraft DA 42 NG Airplane Maintenance Manual, Doc. No. 7.02.15, latest effective issue.
I.3 Remarks
a) All work must be done by a certified aircraft service station or a certified aircraft maintenance mechanic.
b) All work, particular those that are not especially described in this work instruction, 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 Instruction in color.
e) In case of doubt, contact Diamond Aircraft Industries GmbH.
II DRAWINGS, SPECIAL TOOLS & MATERIALS II.1 Drawings D60-3277-10-00_01 II.2 Special Tools Spacer X00-W027-00-00.02 Rev."-"
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt WI-MSB 42-095 WI-MSB 42NG-026 Revision 0 Page 2 of 4 11-Nov-2011
II.3 Material Quantity Part No. Description 2 ORAR00227-N7083 O-Ring 2 MS 28775-010 O-Ring 2 LN 9348-08 Hexagon nut 2 LN 9348-06 Hexagon nut 100ml 1U-9891 or equivalent Additiv 1U-9891 Caterpillar Inc.
Materials including special tools are available from Diamond Aircraft Industries.
II.4 Consumables Quantity Part No. Description Approx. 2 l 3627020L Aero Shell Fluid 41
a. r. Royoco 81MS Grease Royoco 81MS
a. r. 135376 Loctite 262
Consumables may be procured locally or from Diamond Aircraft Industries
III INSTRUCTIONS 1 Make sure AMM-TR-MÄM-42-368 and AMM-TR-MÄM-42-447 are incorporated into the AMM.
2 Remove the LH Main Landing Gear Damper acc. to AMM section 32-10.
3 Release nitrogen and oil from the damper.
WARNING: Do not spill Fluid 41 on your skin or on your clothes. Fluid 41 is harmful and can cause skin disease and damage to clothes.
WARNING: Always wear safety glasses. The damper is gas loaded.
Install the adapter with drain hose onto the charging valve of the damper and release the pressure into the suitable container acc. to picture 1.
Wait until the nitrogen is fully released.
Push in the damper to minimum position to drain the oil.
Picture 1
4 Remove the charging valve from damper and install spacer.
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt WI-MSB 42-095 WI-MSB 42NG-026 Revision 0 Page 3 of 4 11-Nov-2011
5 Remove the bottom cap:
Remove the bolt holding the bottom cap.
Pull the bottom cap from the damper assembly.
WARNING: Do not spill Fluid 41 on your skin or on your clothes. Fluid 41 is harmful and can cause skin disease and damage to clothes.
Note: Catch the residual oil into a suitable container.
Clean the cap with acetone.
Replace the O-Ring from the cap by new O-Ring ORAR00227-N7083 and apply a coat of Additive 1U-9891 on the new O-Ring.
Caution: Do not use steel tools when removing the O-Ring.
Do not scratch the surfaces of the groove.
6 Remove the nut on the piston end plate.
7 Install nut LN 9348-08 on the piston end plate. Secure the connection with Loctite 262
i.a.w. drawing D60-3277-10-00_01.
Picture 2 8 Allow Loctite to cure before filling (Minimum cure time 12 hours).
9 Install the bottom cap with the bolt, washer and nut.
10 Remove the spacer from piston tube.
11 Install the charging valve with a new O-Ring MS 28775-010.
12 Adjust the direction of the piston tube to the cylinder tube acc. to picture 3.
Note: The charging valve must be aligned with the nut from the bolt holding the bottom cap.
Piston end plate Nut Spacer
Diamond Aircraft Industries GmbH N. A. Otto-Straße 5 A-2700 Wiener Neustadt WI-MSB 42-095 WI-MSB 42NG-026 Revision 0 Page 4 of 4 11-Nov-2011
Picture 3 13 Fill and charge the Damper acc. to AMM Section 32-10.
14 Install the Damper to the MLG acc. to AMM Section 32-10.
15 Perform steps 2 through 14 on the RH MLG damper.
16 Clean working area and check for foreign objects.
17 Do a landing gear extension and retraction test and check clearance between MLG wheel and wheel bay i.a.w. AMM Section 32-10.
18 Apply anti-corrosion coating on damper connections i.a.w. AMM Section 12-30.
19 Perform functional check of altered, repaired and new parts.
20 Test all systems in working area for function.
21 Make necessary entries into aircraft logs.
• 10 Sheet 1 APPROVAL SEE TB BusakShamban BusakShamban Parker Fa. Mayer Fa. Mayer Fa. Mayer Supplier Scale: 12 D60-3277-10-00_01 from REVISION ZONE DATE DESCRIPTION MAM 42-434 08.06.10 ALL NEW DRAWING, SUPERSEDES D60-3277-10-00 Detail C 2:1 O-Ring O-Ring • Ring Ventil Ventilkappe ZZ-V-25 (schematisch) HEXAGON NUT Sechskantmutter Sechskantschraube Sechskantschraube Schelbe Sechskantmutter- niedrig Scheibe Dichtung Part Nr. 410194 Part Nr. 410194 Stützring Part Nr. 410194 Gleitring Deckel Drossel BEARING Rohr Description Specification General Tolerance: IS O 276B medium Date1 5 JUNI 201: Name Next Higher Assembly : Title : D60-3237-21-00_01 MLG Damper > Diamond Drawing Number: DA42 Twin Star Saved undeD60-3277-10-00_01.asmlunbelastet Section B-B ORAR00227-N70 ORAR00224-N70 MS 28775-010 MS 27436 MS 20813 LN9348 M8 LN9348 M6 LN 9037-M6x80 LN 9037-M4x12 LN 9025 - 6,4 DIN 936-M8-zp DIN 9021-4,5-A2 D60-9032-77-01 D80-9032-77-01 D80-9032-77-01 D60-3277-10-53 D60-3277-10-52 D60-3277-10-51 D60-3277-10-34_01 D60-3277-10-33 060 3277.10.30 D60-3277-10-31 Part Number Approved: C JUN Triname *.* MAM 42-434 08.06.10 M. Scheikl Change 1:1 14 Pas. OTY 12 22 16 13 FLAG NOTES SECURE WITH LOCTITE 262 ATTENTION: MINIMUM CURE TIME 12h BEFORE FILLING SECURE WITH LOCTITE 648 SECURE ITEM 14 AFTER INSTALLATION WITH A PRICK PUNCH ON THE BOTTOM SIDE Section A-A 21 2745 ÷0,5 415,5 +0,5