SERVICE BULLETIN NO. 1237
Piper M500 · Service Bulletins
Overview
This document is Service Bulletin No. 1237 issued by Piper Aircraft, Inc. on August 10, 2011, regarding the replacement of static dischargers on specific aircraft models. The bulletin outlines mandatory compliance for affected models, including the PA-46-500TP Meridian. It details the potential issue with certain static dischargers that may become loose and separate during flight, posing a safety risk. The bulletin provides inspection and installation instructions, compliance timelines, and documentation requirements for maintenance personnel. It is essential for operators of the affected aircraft to follow the instructions to ensure safety and regulatory compliance.
- Affected models include PA-46-350P Mirage, PA-46R-350T Matrix, and PA-46-500TP Meridian.
- Compliance is mandatory at the next scheduled maintenance, not exceeding 50 flight hours.
- Inspect static dischargers for proper installation, ensuring two lock washers are present.
- If a discharger is missing or improperly installed, follow removal and installation procedures.
- Document compliance in the aircraft logbook.
Document
Source
Originally published by cutteraviation.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Service Bulletins
- Year
- 2011
- Pages
- 3
- File size
- 65 KB
- Publisher
- cutteraviation.com
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In this document
Purpose
The purpose of this Service Bulletin is to address the potential risk of certain Dayton-Granger Static Dischargers (P/N 456-904) becoming loose and detaching from the aircraft during flight. This issue affects specific aircraft models listed in the bulletin.
Compliance Time
Compliance with this Service Bulletin is mandatory and should be performed at the next regularly scheduled maintenance event, but not to exceed fifty (50) flight hours.
Inspection Instructions
For airplanes listed in Group 1, proceed directly to Step 3 of the inspection. For Group 2, review maintenance records to check if any Static Discharger (P/N 456-904) has been installed since October 2010. If installed, proceed to Step 3; if not, proceed to Part III.
Removal and Installation
The removal process involves unscrewing the static discharger from its mounting base. When installing, ensure that a second lock washer is present and torque the hex nut to 5 in.-lb. Verify the electrical resistance between the discharger tip and the aircraft surface is between 6.0 to 200 mega-ohms.
Documentation
After completing the inspection and any necessary actions, make a logbook entry indicating compliance with this Service Bulletin.
Safety notes
- Static dischargers may become loose and separate during flight, posing safety risks.
Full document text
ATA: 2360 (OVER) SERVICE NO. 1237 BULLETIN PIPER CONSIDERS COMPLIANCE MANDATORY Piper Aircraft, Inc. 2926 Piper Drive Vero Beach, Florida, U.S.A. 32960 Date: August 10, 2011 (S) SUBJECT: STATIC DISCHARGER REPLACEMENT MODELS AFFECTED: SERIAL NUMBERS AFFECTED: (Group 1) PA-46-350P Mirage 4636491 through 4636499 PA-46R-350T Matrix 4692158 through 4692163 PA-46-500TP Meridian 4697448 through 4697455 (Group 2) PA-46-310P Malibu 46-8408001 through 4608140 PA-46-350P Mirage 4622001 through 4622200; 4636001 through 4636490 PA-46R-350T Matrix 4692001 through 4692157 PA-46-500TP Meridian 4697001 through 4697447 COMPLIANCE TIME: At the next regularly scheduled maintenance event, but not to exceed fi fty (50) hours. APPROVAL: The technical content of this Service Letter has been shown to comply with the applicable Federal Aviation Regulations and is FAA approved. PURPOSE: Certain shipments of Dayton-Granger Static Dischargers, Piper part number (P/N) 456-904, may become loose and separate from the aircraft during fl ight. Piper installed these Static Dischargers on the airplanes listed in Group 1. Airplanes listed in Group 2 may have installed them as service replacements, October 2010 to present. INSTRUCTIONS: Part I. Inspection 1. For airplanes listed in Group 1, proceed to Step 3. 2. For airplanes listed in Group 2, review airplane maintenance records to determine if any Static Discharger, P/N 456-904 has been installed, October 2010 or later. a. If so, proceed to Step 3. b. If not, proceed to Part III. 3. Inspect each Static Discharger, P/N 456-904, for proper installation. The correct installation includes one lock washer on each side of the hex nut as shown in Figure 1. a. If both lock washers are present, proceed to Part III. b. If only one lock washer is present, or the discharger is missing entirely, proceed to Part II. Figure 1 Correctly Installed Static Discharger SERVICE BULLETIN NO. 1237 PAGE 2 of 3 Part II. Removal and Installation 1. Removal Unscrew static discharger from mounting base. NOTE: Retain to return for warranty credit. 2. Installation a. Verify second lock washer is installed on static discharger per Figure 1. b. Install new static discharger into the mounting base. c. Tighten hex nut to mounting base. Torque to 5 in.-lb. d. Verify electrical resistance between static discharger tip and aircraft surface is 6.0 to 200 mega-ohms (using 500 to 1,000 volt mega-ohmmeter). Part Ill. Documentation Make a logbook entry indicating compliance with this Service Letter. SERVICE BULLETIN NO. 1237 PAGE 3 of 3 MATERIAL REQUIRED: Static Discharger, Piper P/N 456-904, as required per inspection. AVAILABILITY OF PARTS: Your Piper Service Facility. EFFECTIVITY DATE: This Service Bulletin is effective upon receipt. NOTE: Please notify the factory of any address/ownership corrections. Changes should include aircraft model, serial number, current owner’s name and address. Corrections and/or changes should be directed to: PIPER AIRCRAFT, INC. Attn: Customer Service 2926 Piper Drive Vero Beach, FL 32960