SERVICE BULLETIN M20-329

Mooney M20V Acclaim Ultra · Flight Manual

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Overview

This Service Bulletin M20-329, dated November 21, 2017, is issued by Mooney International Corporation and is FAA approved for engineering design. It addresses the installation procedure for windscreen and window fasteners specifically for the Mooney M20V Acclaim Ultra and M20U Ovation Ultra models. The bulletin outlines the necessary steps and precautions for reinforcing the bond between the windscreen/windows and the aircraft structure. Compliance is required within the next 25 flight hours, and the document provides detailed instructions, tools needed, and safety precautions to ensure proper installation and avoid damage to the aircraft components.

Compliance required within 25 flight hours.
Total of 12 holes to be drilled around the windscreen.
Hole diameter tolerance for windscreen is .169" - .189".
Countersink hole tolerance is .319" - .332".
Use BAT #40 HSS drill bit for initial drilling.

Document

Source

Originally published by mooney.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

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Document details

Type: Flight Manual
Year: 2017
Pages: 9
File size: 339 KB
Publisher: mooney.com

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In this document

Introduction

The introduction outlines the purpose of the bulletin, which is to enhance the installation of windscreens and windows on Mooney Acclaim Ultra aircraft by adding fasteners. This is intended to fortify the bond between the shell flange and the windscreen or windows.

Windscreen Fastener Installation

This section provides a step-by-step guide for installing fasteners around the windscreen. It includes specific measurements for hole placement, drilling instructions, and cautions against damaging the windscreen during the process. A total of 12 holes are to be drilled, with precise tolerances for hole diameters.

Rear and Door Window Fastener Installation

Similar to the windscreen installation, this section details the procedure for installing fasteners on the rear and door windows. It emphasizes the importance of measuring and marking hole locations accurately and provides instructions for drilling and sealing.

Tools Required

The bulletin lists the tools necessary for the installation, including various drill bits and sealants. Specific part numbers for the tools are provided to ensure that the correct equipment is used.

Compliance and Warranty

The document specifies that compliance with the bulletin is required within 25 flight hours and outlines the warranty terms provided by Mooney International Corporation for labor associated with the installation.

Safety notes

Carefully drill all holes to prevent cracking, crazing, chipping, and misalignment.
Do not use isopropyl alcohol to clean plexiglass surfaces or attaching hardware.

Full document text

SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 1 of 9 SUBJECT: Mooney Windscreen and Window Fastener Installation Procedure MODELS/ SN AFFECTED: M20U Ovation Ultra - 32-0002 M20V Acclaim Ultra - 33-0002 and 33-0003 TIME OF COMPLIANCE: WITHIN NEXT 25 FLIGHT HOURS INTRODUCTION: Mooney International Corporation is including fasteners in the windscreen and window installations to further fortify the bond between the shell flange and the windscreen or windows. This service bulletin provides the procedure for adding fasteners to Mooney Acclaim Ultra aircraft with existing windscreen and window installations. INSTRUCTIONS: Read entire procedures before beginning work. TOOLS: BAT #40 HSS Drill Bit Drill Bit Guide 640-1660-6 Drill Bit Phillips Head Screwdriver 3/8x100x#21 Countersink Drill Bit CS3204-B Sealant 640-1720-6 Drill Bit WINDSHIELD FASTENER INSTALLATION: 1.1. Remove upper and front post interior panels and glare shield from aircraft. Refer to the applicable Mooney Service and Maintenance Manual. 1.2. Starting from center butt line at the outboard top of the windscreen, measure 1.5 inches to the right and mark the first hole using masking tape or a similar method. NOTE: Each hole must meet the following requirements: S Be a minimum distance of 0.75” from the rivet spacer in the shell flange. S Be a minimum distance of 0.30” from the edge of the windscreen and flange. CAUTION: Carefully drill all holes to prevent cracking, crazing, chipping, and misalignment. It is very important to make clean straight holes. If the windscreen incurs damage, it must be replaced. Do not use isopropyl alcohol to clean plexiglass surfaces or attaching hardware. Clean per FAA AC 43.13-1B, paragraph 3-25. Continue measuring around the outboard perimeter of the windscreen, marking off 5 additional holes every 10 inches. Refer to Figure M20-329-1. 1.3. Repeat step 1.2 to the left of the center butt line starting at the outboard top of the windscreen. A total of 12 holes should be marked off. 1.4. Using a BAT #40 HSS drill bit and a drill guide, carefully drill the 12 holes around the outboard perimeter of the windscreen and shell flange. Refer to Figure M20-329-3. CAUTION: Using the incorrect drill bit in steps 1.4 - 1.7 may result in crazing of the windscreen. 1.5. Using a 640-1660-6 drill bit and a drill guide, carefully enlarge the holes. Refer to Figure M20-329-3. Hole diameter tolerance is .169” - .189” through windscreen. SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 2 of 9 1.6. Using a 3/8x100x#21 countersink drill bit, carefully countersink the holes. Refer to Figure M20-329-4. Hole countersunk tolerance is .319” - .332” through windscreen. 1.7. Using a 640-1720-6 drill bit, carefully enlarge the holes. Refer to Figure M20-329-4. 1.8. Inspect the holes for signs of crazing, cracking, or chipping. If these signs are present, stop procedure and contact Mooney Technical Support. 1.9. Place a small bead of CS3204-B sealant around the underside of the head of the MS24694-S9 screws. Refer to Figure M20-329-5. 1.10. Using a Phillips head screwdriver, install the MS24694-S9 screws, the NAS1149FN832P washers, and MS21042L08 nuts, and lightly tighten by hand. Refer to Figure M20-329-5. 1.11. Lightly tighten the screws until snug to <3 in-lbs. NOTE: It is permissible to trim excess screw thread for interior clearance. Minimum thread length is required to fully engage nut plus one additional thread. Epoxy prime trimmed screw surface per Spec 20 Section 42. 1.12. Wipe off excess sealant from screw heads, plexiglass, and nuts. CAUTION: Carefully drill all holes to prevent cracking, crazing, chipping, and misalignment. It is very important to make clean straight holes. If the windscreen incurs damage, it must be replaced. Do not use isopropyl alcohol to clean plexiglass surfaces or attaching hardware. Clean per FAA AC 43.13-1B, paragraph 3-25. 1.13. Let sealant cure per manufacturer's specifications. 1.14. Touch up paint as needed. 1.15. Re-install upper and front post interior panels and glare shield. Refer to the applicable Mooney Service and Maintenance Manual. 1.16. Return aircraft to service. 1.17. Procedure complete. REAR AND DOOR WINDOW FASTENER INSTALLATION: NOTE: Refer to the applicable Mooney Service and Maintenance Manual for removal and installation procedures in the following steps. 2.1. FOR AIRCRAFT WITH INFLATABLE AMSAFE RESTRAINT: Disconnect AmSafe electrical hookup and AmSafe hose from seats. 2.2. Remove seats from aircraft for both rear and door window fastener installation. 2.3. For rear window fastener installation, disconnect rear seat belt from top attach point on interior panel and remove top interior panels. 2.4. For door window fastener installation, remove door grasp handles, door open handles, and top door panels from aircraft. SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 3 of 9 2.5. Using masking tape or a similar method, measure and mark the hole locations on the window. A total of 6 holes should be marked off per window. Refer to Figure M20-329-2 for hole locations and measurements. NOTE: Each hole must meet the following requirements:

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S Be a minimum distance of 0.750” from the rivet spacers in the shell flange. S Be a minimum distance of 0.300” from the edge of the window and flange. However if distance is shorter: S If edge distance is between 0.200” - 0.300” from the edge of the composite shell flange, a doubler will be required. S Anything less than 0.300” on window or 0.200” on composite flange is unacceptable and will need further action from Mooney International. 2.5.1 If doubler is required, make from 0.032” thick 2024 T3 Aluminum and cut to 1.00” x 0.700” size, refer to Figure M20-329-2. Apply a non-metallic surface film (Chemical Conversion Coating) to doubler for protection against corrosion. 2.5.2 Bond doubler to inner window flange with EA9394 Hysol per manufacturers instructions and located such that the fastener hole is at least 0.300” from the edge of the doubler. CAUTION: Carefully drill all holes to prevent cracking, crazing, chipping, and misalignment. It is very important to make clean straight holes. If the window incurs damage, it must be replaced. Do not use isopropyl alcohol to clean plexiglass surfaces or at- taching hardware. Clean per FAA AC 43.13-1B, paragraph 3-25. 2.6. Using a BAT #40 HSS drill bit and a drill guide, carefully drill the 6 holes around the outboard perimeter of the window and shell flange. Refer to Figure M20-329-3. CAUTION: Using the incorrect drill bit in steps 1.3 - 1.6 may result in crazing of the window. 2.7. Using a 640-1660-6 drill bit and a drill guide, carefully enlarge the holes. Refer to Figure M20-329-3. Hole diameter tolerance is .169” - .189” through windscreen. 2.8. Using a 3/8x100x#21 countersink drill bit, carefully countersink the holes. Refer to Figure M20-329-4. Hole countersunk tolerance is .319” - .332” through windscreen. 2.9. Using a 640-1720-6 drill bit, carefully enlarge the holes. Refer to Figure M20-329-4. 2.10. Inspect the holes for signs of crazing, cracking, or chipping. If these signs are present, stop procedure and contact Mooney Technical Support. 2.11. Place a small bead of CS3204-B sealant around the underside of the head of the MS24694-S9 screws. Refer to Figure M20-329-5. 2.12. Using a Phillips head screwdriver, install the MS24694-S9 screws, the NAS1149FN832P washers, and MS21042L08 nuts, and lightly tighten by hand. Refer to Figure M20-329-5. 2.13. Lightly tighten the screws until snug to <3 in-lbs. NOTE: It is permissible to trim excess screw thread for interior clearance. Minimum thread length is required to fully engage nut plus one additional thread. Epoxy prime trimmed screw surface per Spec 20 Section 42. SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 4 of 9 2.14. Wipe off excess sealant from screw heads, plexiglass, and nuts. CAUTION: Carefully drill all holes to prevent cracking, crazing, chipping, and misalignment. It is very important to make clean straight holes. If the window incurs damage, it must be replaced. Do not use isopropyl alcohol to clean plexiglass surfaces or at- taching hardware. Clean per FAA AC 43.13-1B, paragraph 3-25. 2.15. Let sealant cure per manufacturer's specifications. 2.16. Touch up paint as needed. 2.17. Re-attach seat belt at attach point. Re-install door and interior panels, door handles, and door grasp handles. 2.18. Re-install seats. 2.19. FOR AIRCRAFT WITH INFLATABLE AMSAFE RESTRAINT: Re-connect AmSafe electrical hookup and AmSafe hose. Test AmSafe after re-installation. 2.20. Return aircraft to service. 2.21. Procedure complete. NOTE: The attached compliance card needs to be filled out and returned to Mooney Inter- national Corporation upon completion of this Service Bulletin M20-329. WARRANTY: Mooney International Corporation will warrant labor 35 hours in accordance with procedures of this service bulletin For repair, Mooney International Corporation will perform the neces- sary repair at the Mooney Factory Service Center when schedules are established between aircraft owners and Mooney International Corporation. If further action is needed, please email support@mooney.com and a representative will be on contact with you. REFERENCE 1. M20U or M20V Mooney Service and Maintenance Manual DATA: 2. FAA AC43.13-1B, paragraph 3-25 Parts Kit P/N: Service Bulletin Kit M20-329- 001 Item P/N Description Qty 1. MS24694-S9 SCREW 36 2. NAS1149FN832P WASHER 36 3. MS21042L08 NUT 36 4. 1.00” x 0.70” DOUBLER (.032” THK 2024 T3 ALUM) AR SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 5 of 9 MEASURE HOLES EVERY 10.0” BL 0.0 101 101 101 101 101 1.5 Figure SB M20-329-1 - Hole Placement Around Outboard Perimeter of Windscreen SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 6 of 9 6 PLACES 6 PLACES 131 181 71 51 81 171 171 71 STORM WINDOW - 11 WINDOW ASSY - 3 WINDOW ASSY (LH) - 5 WINDOW ASSY (RH) - 7 WINDOW ASSY (LH) - 8 WINDOW ASSY (RH) DOUBLER BOND WITH EA9394 HYSOL IF DOUBLER IS REQUIRED 1.00” 0.70” .032” 2024 T3 ALUMINUM PER MFG INSTRUCTIONS 0.30” 0.50” 0.169” 0.180” DOUBLER REF: REF: WINDOW SHELL REF: APPLY NON- METALLIC SURFACE FILM FOR PROTECTION AGAINST CORROSION. Figure SB M20-329-2 - Hole Placement Around Outboard Perimeter of Windows (LH Shown) SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 7 of 9 640-1660-6 BAT #40 HSS Drill initial hole with BAT #40 HSS. Next, widen hole with 640-1660-6. Hole diameter tolerance is .169” - .180” through windscreen Figure SB M20-329-3 - Drill Bit Sequence Countersink hole with 3/8x100x#21. Finish with 640-1720-6. 640-1720-6 3/8x100x#21 Hole countersink tolerance is .319” - .332” Figure SB M20-329-4 - Drill Bit Sequence SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 8 of 9 CS3204 SEALANT MS21042L08 NUT NAS1149FN832P WASHER Install hardware. Lightly tighten by hand. MS24694-S9 SCREWS Torque to < 3 in-lbs plus drag. Figure SB M20-329-5 - Hardware Installation SERVICE BULLETIN SERVICE BULLETIN M20-329 Date: November 21, 2017 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN MOONEY INTERNATIONAL 165 Al Mooney Road North Kerrville, Texas 78028 CORPORATION MOONEY INTERNATIONAL CORPORATION 165 Al Mooney Road North, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 9 of 9 MOONEY INTERNATIONAL CORPORATION KERRVILLE, TEXAS 78028 - FAX 830- 257- 4635 SERVICE (BULLETIN) (INSTRUCTION) NO.________________HAS BEEN COMPLIED WITH ON AIRCRAFT MODEL _______________ SERIAL NUMBER ________________ Tach. Time: Owner: N-Number (Reg. No.) Date of Compliance: Complied By: Form 07-0001 Inspection Report: MOONEY INTERNATIONAL CORPORATION ATT’N: TECHNICAL SUPPORT 165 Al Mooney Road, North Kerrville, Texas 78028 PLACE STAMP HERE SEND TO: Mooney International Corporation 165 Al Mooney Road North Kerrville, TX 78028 FAX: (830) 257-4635 or EMAIL support@mooney.com Figure SB M20-329-6 - Compliance Card

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