SERVICE BULLETIN M20-340A

Mooney M20V Acclaim Ultra · Flight Manual

Free account — keep the POHs & checklists you reference in one place.

Overview

This document is a Service Bulletin (M20-340A) issued by Mooney International Corporation, dated December 11, 2019. It addresses an issue with the alternator wiring, mounting, and security for the Mooney M20V Acclaim Ultra, specifically for serial numbers 33-0001 through 33-0018. The bulletin outlines mandatory compliance procedures to ensure the safety and functionality of the aircraft's electrical system. It includes detailed instructions for inspecting and securing the alternator wire to prevent damage caused by contact with the right-hand exhaust crossover tube. The document emphasizes the importance of following the outlined steps before the next flight and provides a compliance card for documentation purposes.

Affected models: Mooney M20V serial numbers 33-0001 to 33-0018.
Inspect alternator wire for damage before the next flight.
Torque the new clamp assembly to 20-25 in. lbs.
Maintain a minimum 2" space between the exhaust tube and the clamp.
Fill out and return the compliance card after completing the service.

Document

Source

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

View original at mooneypilots.org

Report a problem or request removal

Document details

Type: Flight Manual
Year: 2019
Pages: 5
File size: 280 KB
Publisher: mooneypilots.org

Documentation completeness

5/7

Most owners only have the POH. Here's the essential set for the Mooney M20V Acclaim Ultra.

More Mooney M20V Acclaim Ultramanuals & documents

See all 17 →

In this document

Introduction

The introduction highlights a reported issue with the alternator wire on the Mooney M20V Acclaim Ultra, which was found to be incorrectly positioned, leading to potential damage from contact with the exhaust crossover tube. The bulletin mandates compliance to rectify this issue.

Instructions

The instructions section provides a step-by-step guide for pilots and maintenance personnel to follow. It includes turning off the master switch, removing the cowling, inspecting the alternator wire and exhaust crossover tube for damage, and properly securing the alternator wire using specified clamps and hardware. The torque specifications for the clamps are also included.

Parts List

A detailed parts list is provided, specifying the necessary components required for compliance with the bulletin. This includes part numbers and descriptions for clamps, bolts, washers, and nuts.

Compliance

The compliance section emphasizes the need to fill out a compliance card after completing the procedures. This card must be sent to Mooney International Corporation to confirm that the necessary actions have been taken.

Safety notes

Ensure the master switch is off before beginning work.
Inspect for any signs of damage to the alternator wire and exhaust crossover tube.

Full document text

SERVICE BULLETIN SERVICE BULLETIN M20-340A Date: December 11, 2019 THIS BULLETIN DOES NOT CHANGE AIRCRAFT TYPE 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 SBM20- 340A Page 1 of 5 SUBJECT: M20V ALTERNATOR WIRING, MOUNTING AND SECURITY [Chapter 24 - ELECTRICAL POWER] MODELS/ SN Mooney M20V - 33-0001 THRU 33-0018 AFFECTED: TIME OF Before Next Flight COMPLIANCE: INTRODUCTION: There was a report in the field, of an M20V Acclaim Ultra with an alternator wire damaged on the RH exhaust crossover tube. Mooney Engineering has determined the wire was incor- rectly positioned. This allowed the wire to contact the RH exhaust crossover tube causing a short circuit to the alternator. This resulted in damage to the wire and crossover tube. This requires mandatory compliance by owners. The attached compliance card needs to be filled out and returned to Mooney International Corporation upon completion of this Service Bulletin M20- 340A. INSTRUCTIONS: Read entire procedures before beginning work. 1.1. Turn master switch - OFF. 1.2. Remove top and bottom cowling, refer to Mooney Service and Maintenance Manual. 1.3. Locate upper alternator wire (refer to Figure SBM20-340-1). Inspect wire for any signs of damage; chafing, cracks in shielding, burnt spots, etc., if wire is damaged, contact MOONEY TECHNICAL SUPPORT support@mooney.com for a replacement wire. 1.4. Locate RH exhaust crossover tube. Inspect for damage; holes, cracks, etc., if damaged contact MOONEY TECHNICAL SUPPORT support@mooney.com for a replacement crossover tube, refer to Figure SBM20-340-1. 1.5. From RH engine mount mounting boss, measure along engine mount tube approx 16” to locate DG clamps mounting alternator field sensor wires to engine mount, refer to Figure SBM20-340-2. 1.6. Remove (1 qty) mounting bolt AN3-5A, (1 qty) NAS1149F0363P Washer, (1 qty) MS21045L3 Nut, connecting the large and small DG clamps together, refer to Figure SBM20-340-3. 1.7. Insert alternator wire into new MS21912WCJ6 Clamp, mount to existing DG clamps with new hardware; (1 qty) AN3-6A Bolt, (1 qty) NAS1149F0363P Washer, (1 qty) MS21045L3 Nut, stack clamps as shown in Figure SBM20-340-3. 1.8. Tighten stacked clamp assembly together and torque to 20-25 In. Lbs. Make sure slack in alternator wire stays taut along engine mount and keep minimum clamp height clearance as shown in Figure SBM20-340-3. 1.9. Install top and bottom cowling, refer to Mooney Service and Maintenance Manual. NOTE: Fill out compliance card and send by MAIL or FAX to Mooney International Corporation as indicated on the attached Compliance Card. SERVICE BULLETIN SERVICE BULLETIN M20-340A Date: December 11, 2019 THIS BULLETIN DOES NOT CHANGE AIRCRAFT TYPE 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 SBM20- 340A Page 2 of 5 1.10. Return aircraft to service. 1.11. Procedure complete. WARRANTY: Mooney International Corporation, will warrant labor 1 hour when corrective action is done in accordance with procedures of this Service Bulletin for aircraft currently covered under the Mooney International Corporation factory warranty program. REFERENCE 1. Mooney M20V Service and Maintenance Manual DATA: PARTS LIST: Mooney International Corporation, Service Bulletin Parts Kit(s): Not Ordered As Kit Order parts as required below (Standard Shop Supplies): Item P/N Description Qty 1. MS21912WCJ6 CLAMP 1 2. AN3-6A BOLT 1 3. NAS1149F0363P WASHER 1 4. MS21045L3 NUT 1 SERVICE BULLETIN SERVICE BULLETIN M20-340A Date: December 11, 2019 THIS BULLETIN DOES NOT CHANGE AIRCRAFT TYPE 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 SBM20- 340A Page 3 of 5 DAMAGED CROSSOVER TUBE AND ALTERNATOR WIRE SLACK IN ALTERNATOR WIRE CAUSED INADEQUATE CLEARANCE TO EXHAUST CROSSOVER TUBE Figure SB M20-340-1 - EXISTING ALTERNATOR WIRE ROUTING 16” FROM ENGINE MOUNTING BOSS TO ALTERNATOR CABLE DG CLAMP Figure SB M20-340-2 - ALTERNATOR WIRE ROUTING LOCATION (RH ENGINE MOUNT) SERVICE BULLETIN SERVICE BULLETIN M20-340A Date: December 11, 2019 THIS BULLETIN DOES NOT CHANGE AIRCRAFT TYPE 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 SBM20- 340A Page 4 of 5 AN3-6A BOLT (1 QTY) NAS1149F0363P WASHER (1 QTY) MS21912WCJ6 CLAMP (1 QTY) MS21045L3 NUT (1 QTY) (TORQUE TO 20-25 In. Lbs) CAUTION: ALLOW MINIMUM 2” SPACE BETWEEN EXHAUST TUBE AND MS21912WCJ6 CLAMP NOTE: KEEP ALTERNATOR WIRE TAUT WHILE CLAMP IS TORQUED. REF: ALTERNATOR FIELD SENSOR WIRES REF: STACK CLAMPS AS SHOWN Figure SB M20-340-3 - NEW ALTERNATOR WIRE MOUNTING SERVICE BULLETIN SERVICE BULLETIN M20-340A Date: December 11, 2019 THIS BULLETIN DOES NOT CHANGE AIRCRAFT TYPE 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 SBM20- 340A Page 5 of 5 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 ALL COMPLIANCE CARDS TO: Mooney International Corporation ATTN:Tech Pubs Dept. 165 Al Mooney Road North

Show full text

Kerrville, TX 78028 FAX: (830) 257-4635 or EMAIL TO: techpubs@mooney.com To submit Technical Publication changes, visit our website: https://www.mooney.com/service or email a request to: techpubs@mooney.com

All Mooney M20V Acclaim Ultra flight manual