SERVICE BULLETIN M20-311
Mooney M20TN Acclaim Type S · Maintenance Manual
Overview
This service bulletin, M20-311, addresses a specific issue with the Exhaust Gas Temperature (EGT) probe mounting on Mooney M20TN Acclaim and Type-S aircraft. The bulletin is intended for aircraft owners and maintenance personnel, detailing necessary inspections and corrective actions due to reports of oversized EGT probe mounting holes in cylinders #1 and #2. Compliance is required within the next 10 flight hours, and the document provides step-by-step instructions for the inspection and installation of new sealing washers. It also includes a compliance card that must be returned to Mooney Airplane Company after the work is completed.
- Compliance is required within the next 10 flight hours.
- Inspect and replace EGT probes if mounting holes are oversized.
- Torque clamps to 30-35 in.lbs. during installation.
- Use sealing washer P/N 900006-1 for EGT probe installation.
- Complete a logbook entry after compliance.
Document
Source
Originally published by mooney.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Maintenance Manual
- Year
- 2010
- Pages
- 3
- File size
- 699 KB
- Publisher
- mooney.com
Most owners only have the POH. Here's the essential set for the Mooney M20TN Acclaim Type S.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins
- Type Certificate (TCDS)
More Mooney M20TN Acclaim Type Smanuals & documents
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- SERVICE BULLETIN M20-299AV Speeds Reference
- SERVICE BULLETIN M20-312Normal Procedures
- 2009 GAMA Statistical Databook & Industry OutlookTraining Manual
- SERVICE BULLETIN M20-309Flight Manual
- Mooney Acclaim Type SOther Documents
- Mooney Acclaim Type SPilot's Operating Handbook
- 2008 Mooney M20TN Acclaim Type SSystems Description
- Mooney Retrofit KitsAvionics Manual
- Type Certificate Data Sheet for Mooney M20TN Acclaim Type SType Certificate
- Weight & Balance for Mooney M20TN Acclaim Type SWeight And Balance
In this document
Introduction
The bulletin introduces the issue of oversized EGT probe mounting holes in cylinders #1 and #2 of the Mooney M20TN aircraft. It emphasizes the need for inspection and corrective action to ensure proper functioning of the EGT probes.
Instructions
Detailed instructions are provided for the inspection and replacement of the EGT probes. Steps include turning off the master switch, removing the cowling, and carefully handling the EGT probes during removal and installation. Specific torque values for clamps are also included.
Parts List
A parts list is included, specifying the required sealing washers (P/N 900006-1) and their quantity (2) for the EGT probe installation.
Compliance
The bulletin mandates that compliance must be completed within the next 10 flight hours and requires a logbook entry to document the work performed.
Warranty
Mooney Airplane Company offers a warranty for 1 hour of labor for corrective actions performed in accordance with this service bulletin for aircraft under warranty.
Safety notes
- Ensure the master switch is OFF before beginning work.
- Handle EGT probes carefully to avoid damage.
Full document text
MOONEY AIRPLANE COMPANY, INC. SERVICE BULLETIN 165 Al Mooney Road Kerrville, Texas 78028 MOONEY AIRPLANE COMPANY, INC. 165 Al Mooney Road, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 1 of 3 THIS BULLETIN IS FAA APPROVED FOR ENGINEERING DESIGN SERVICE BULLETIN M20-311 Date: October 7, 2010 SUBJECT: Mooney M20TN - Exhaust Gas Temperature Probe Mounting MODELS/ SN Mooney M20TN Acclaim and Type-S Aircraft (Serial Numbers 31-0004 thru 31-0128) AFFECTED: TIME OF WITHIN NEXT 10 FLIGHT HOURS COMPLIANCE: INTRODUCTION: There have been reports in the field of the EGT Probe mounting hole (#30 drill - .128”) in Cylin- ders #1 and #2) were drilled oversized (.250”) on M20TN Mooney Airplanes listed above. This will require an inspection and corrective action taken. The attached compliance card needs to be filled out and returned to Mooney Airplane Company upon completion of this Service Bulletin M20--311. INSTRUCTIONS: Read entire procedures before beginning work. 1.1 Turn master switch - OFF. 1.2 Remove top and bottom cowling per instructions provided in Chapter 71-10-00 of applicable MAC aircraft Service & Maintenance Manual. 1.3 Locate #1 (RH) EGT probe, remove safety wire retaining probe from clamp. 1.4 Loosen and remove clamp and #1 RH EGT probe, take care not to damage probe. 1.5 Install new sealing washer p/n (900006-1) between EGT probe and exhaust tube. 1.6 Re-install clamp around #1 RH exhaust pipe ensuring correct orientation of clamp tightening screw. Place probe tip into hole and tighten clamp to remove looseness. 1.7 Torque clamp to 30-35 in.lbs. and secure with safety wire to prevent loosening. 1.8 Locate #2 (LH) EGT probe, remove safety wire retaining probe from clamp. 1.9 Loosen and remove clamp and #2 LH EGT probe, take care not to damage probe. 1.10 Install new sealing washer p/n (900006-1) between EGT probe and exhaust tube. 1.11 Re-install clamp around #2 LH exhaust pipe ensuring correct orientation of clamp tightening screw. Place probe tip into hole and tighten clamp to remove looseness. 1.12 Torque clamp to 30-35 in.lbs. and secure with safety wire to prevent loosening. 1.13 Re-install top and bottom cowling per instructions provided in Chapter 71-10-00 of applicable MAC aircraft Service & Maintenance Manual. NOTE: Fill out compliance card and send by MAIL or FAX to Mooney Airplane Company as indicated on the attached Compliance Card (ref Figure M20-311-3) 1.14. Complete log book entry. 1.15. Return aircraft to service. 1.16. Procedure complete WARRANTY: Mooney Airplane Company, Inc. 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 Airplane Company, Inc. factory warranty program. MOONEY AIRPLANE COMPANY, INC. 165 Al Mooney Road, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 2 of 3 REFERENCE 1. MAC Maintenance Manual (applicable A/C) DATA: 2. TCM M-18 Maintenance and Overhaul Manual PARTS LIST: Mooney Airplane Company, Inc., Parts Kit P/N: M20--311--001 Item P/N Description Qty 1. 900006--1 Washer 2 #1 CYLINDER EXHAUST TRANSITION (RH) #2 CYLINDER EXHAUST TRANSITION (LH) EGT PROBE EGT PROBE Figure SB M20-311-1 - EXHAUST GAS TEMPERATURE PROBE LOCATION SEALING WASHER CLAMP #1 AND #2 CYLINDER EXHAUST PIPE (CUT-AWAY) EGT PROBE NEW SAFETY WIRE [P/N 900006-1] [P/N MS20995-N40] TORQUE 30-35 IN.LBS (SLOT IN SCREW TO SCREW HOUSING) (END OF SLOTTED CLAMP TO BODY OF PROBE) OR Figure SB M20-311-2 - EXHAUST GAS TEMPERATURE PROBE AND COMPONENTS MOONEY AIRPLANE COMPANY, INC. 165 Al Mooney Road, Kerrville, Texas 78028 tel: 830-896-6000 www.mooney.com Page 3 of 3 MOONEY AIRPLANE COMPANY KERRVILLE, TEXAS 78028 -- 1-800-331-3880 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 AIRPLANE COMPANY ATT’N: TECHNICAL SUPPORT 165 Al Mooney Road, North Kerrville, Texas 78028 PLACE STAMP HERE SEND TO: Mooney Airplane Company 165 Al Mooney Road North Kerrville, TX 78028 OR FAX: (830) 257-4635 Figure SB M20-311-3 -- Compliance Card