Skip to main content

2100-11 - Helicopter Technology Company

MD HELICOPTERS 600N · Service Bulletins

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

Overview

This document is a mandatory service bulletin issued by MD Helicopters, Inc. to enhance the inspection requirements for the main rotor blades of specific helicopter models. It outlines the necessary steps to be taken during the 100-hour periodic inspection to ensure safety and compliance.

  • Enhancement to 100-hour inspection of main rotor blades required.
  • Applicable to MD Helicopters models 369A, H, HE, HM, HS, D, E, FF, 500N, and 600N.
  • Inspection focuses on the root fitting of the main rotor blades.
  • Failure to comply may result in operation with defective rotor blades.
  • Approximately 0.5 man-hours required for compliance.
  • FAA approved and compliant with applicable Federal Aviation Regulations.
  • Contact HTC for further instructions on parts disposition.
  • Record compliance in the Rotocraft Log Book.

Document

Source

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

View original at helicoptertech.com

Report a problem or request removal

Document details

Type
·
Service Bulletins
Year
·
2019
File size
·
19 KB
Publisher
·
helicoptertech.com
Language
·
en

Specifications & performance

Extracted from this document.

Specifications

Main rotor blade part numbers
·
500P2100, 500P2300, 369D21120, 369D21121, 369D21123, 369A1100, 369D21100, 369D21102
About this document
What is the 2100-11 - Helicopter Technology Company?

The 2100-11 - Helicopter Technology Company is a service bulletins for the MD HELICOPTERS 600N, dated 2019.

Where does the 2100-11 - Helicopter Technology Company come from?

This copy of the 2100-11 - Helicopter Technology Company was originally published by helicoptertech.com and is hosted on Sprinkle as a free, searchable reference copy.

What year was the 2100-11 - Helicopter Technology Company published?

The 2100-11 - Helicopter Technology Company — the MD HELICOPTERS 600N service bulletins on file — is dated 2019.

Documentation completeness
3/7

Most owners only have the POH. Here's the essential set for the MD HELICOPTERS 600N.

This aircraft
Browse all aircraft modelsAircraft directory
For sale
Browse all aircraft for saleAircraft wanted ads
Parts & spares
Avionics & radiosEngines & cylindersBrowse all aircraft parts
Your library
All MD HELICOPTERS 600N manuals6All Md-helicopters manualsFull manuals libraryMy hangar
Tools
Identify an aircraftTail number lookupAircraft matcherCompare aircraftCan I land here?Where can it land?
Explore Sprinkle
Aircraft directoryManufacturersAirports & runwaysAirlinesEnginesAircraft for saleAircraft partsLive flight tracker
For professionals
List an aircraft for salePost a wanted adDealer & broker directoryAircraft parts marketplaceData & API licensingData sources

More MD HELICOPTERS 600Nmanuals & documents

Related documents

In this document

Purpose

The bulletin requires an enhancement to the 100 Hour Periodic Inspection of the Root Fitting on Main Rotor Blades.

Time of Compliance

Instructions must be completed at the next scheduled 100 Hour Inspection and every 100 Hour Inspection thereafter.

Accomplishment Instructions

Detailed steps for inspecting the blade root fittings, including removal, examination, and potential replacement of blades.

Cautions

Warnings against removing hardware from the blade and using chemicals to remove sealant to prevent damage.

References

Lists maintenance manuals and service bulletins relevant to the inspection process.

Points of Contact

Contact information for Helicopter Technology Company for further assistance.

Safety notes

  • Failure to comply with this bulletin can result in helicopter operation with a possible defect in the main rotor blade.
  • Do not remove the bolt, nut, or washers from the blade.
  • Do not use chemicals to remove the sealant; damage to the blade can occur.

Full document text

Helicopter Technology Company, LLC NOTICE No.: 2100-11 Mandatory DATE: 25 October 2019 Service Bulletin PAGE: 1 of 3 MAIN ROTOR BLADE ENHANCED 100-HOUR INSPECTION REQUIREMENTS SUMMARY: MD Helicopters, Inc. has modified their Maintenance Manual and issued Mandatory Service Bulletins (SB369D-222R1, SB369E-121R1, SB369F-108R1, SB500N-059R1, and SB600N-071R1) to improve inspection of the root fitting on main rotor blades. PURPOSE: The purpose of this bulletin is to require an enhancement to the 100 Hour Periodic Inspection of the Root Fitting on Main Rotor Blades. Failure to comply with this bulletin can result in helicopter operation with a possible defect in the main rotor blade. REVISION: N/A. PART NUMBERS AND SERIAL NUMBERS AFFECTED: All Variants of Main Rotor Blade installed on an MD Helicopters, Inc. Model 369A, H, HE, HM, HS, D, E, FF, 500N, and 600N. This includes the following Part Numbers: 500P2100 ALL VARIANTS (STC Numbers SR09074RC, SR09184RC, and SR09172RC) 500P2300 ALL VARIANTS (STC Number SR01050LA) 369D21120 ALL VARIANTS 369D21121 ALL VARIANTS 369D21123 ALL VARIANTS 369A1100 ALL VARIANTS 369D21100 ALL VARIANTS 369D21102 ALL VARIANTS HELICOPTER MODEL AFFECTED: MD Helicopters, Inc. Models 369A, H, HE, HM, HS, D, E, FF, 500N, and 600N. Helicopter Technology Company, LLC NOTICE No.: 2100-11 Mandatory DATE: 25 October 2019 Service Bulletin PAGE: 2 of 3 MAIN ROTOR BLADE ENHANCED 100-HOUR INSPECTION REQUIREMENTS REFERENCES: 1) MD Helicopters, Inc. Handbook of Maintenance Instructions (CSP-HMI-2), Revision 29, dated May 11, 2001 or later 2) MD Helicopters, Inc. Handbook of Maintenance Instructions (CSP-H-2), Revision 17, dated May 15, 2001 or later 3) MD Helicopters, Inc. Appendix B (CSP-H-4), Revision 1, dated May 14, 2001 or later 4) Maintenance Manual HTCM-001, Main Rotor Blades (Installation and Maintenance), Revision H, dated February 12, 2009 or later. 5) MD Service Bulletins: SB369D-222R1, SB369E-121R1, SB369F-108R1, SB500N-059R1, and SB600N- 071R1 FAA APPROVAL: The design engineering aspects of this Bulletin have been shown to comply with the applicable Federal Aviation Regulations (FARs) and are FAA Approved. TIME OF COMPLIANCE: The instructions in this bulletin must be completed at the next scheduled 100 Hour Inspection and then every 100 Hour Inspection thereafter. MANPOWER: Approximately 0.5 man-hours will be required to accomplish this bulletin. WARRANTY POLICY: As applicable per Helicopter Technology Company (HTC) written Limited Warranty for New Product located on the company Website at www.helicoptertech.com. DISPOSITION OF PARTS REMOVED: Notify at the below Contact for further instructions. ACCOMPLISHMENT INSTRUCTIONS: 1). Inspection of the Blade Root Fittings a. Remove the rotor blade to be examined from the helicopter. (Ref. CSP-HMI-2. 62-10-00, Main Rotor Blade Replacement). b. Examine the interface and area around the upper and lower root fittings, doublers, and bonding for cracks or delamination. i. If there are no visible cracks or delamination, continue the inspection (go to Step 2 a.). ii. If there are cracks or delamination of the bonding at the periphery of the blade root fittings and doublers do these steps: Helicopter Technology Company, LLC NOTICE No.: 2100-11 Mandatory DATE: 25 October 2019 Service Bulletin PAGE: 3 of 3 CAUTION: Do not remove the bolt, nut, or washers from the blade. It is possible the hardware stackup for the blade can be incorrectly assembled. (1) Loosen the outboard bolt. (2) Try to insert a Mylar shim between the bottom of the root fitting and the doubler. NOTE: The Mylar shim is 0.004 inch (0.10 mm) thick and 0.118 to 0.236 inch (3 to 6 mm) wide. CAUTION: Do not remove the bolt, nut, or washers from the blade. It is possible the hardware stackup for the blade can be incorrectly assembled. (3) If the Mylar shim did not go between the bottom of the root fitting and the doubler, loosen the adjacent bolt. (4) Try to insert a Mylar shim between the bottom of the root fitting and the doubler. NOTE: The Mylar shim is 0.004 inch (0.10 mm) thick and 0.118 to 0.236 inch (3 to 6 mm) wide. CAUTION: Do not use chemicals to remove the sealant. Damage to the blade can occur. (5) If necessary, remove the sealant with 320 sandpaper from the periphery of the blade root fitting to get a better view of the bond line. (6) Remove and replace a blade with a crack or delamination (ref. CSP-HMI-2, Section 62-10-00, Removal/Installation, Procedure 2. Mani Rotor Blade Replacement). (7) If there is no crack or delamination, torque the bolts 50 to 60 inch-pounds (5.65 to 6.78 Nm) plus 10 inch-pound (1.13Nm) of run-on torque. (8) If necessary, apply sealant to the periphery of the blade root fitting (ref. the manufacturer instructions). iii. Contact HTC if you are not sure of the condition. iv. Install the rotor blade in the same position as removed. (Ref. CSP-HMI-2, (Ref. CSP-HMI- 2, 62-10-00, Main Rotor Blade Replacement) 2). Compliance Record a. Record compliance to the Service Bulletin in the Compliance Record Log (ref. CSP-RLB-L8) of the Rotocraft Log Book CSP-RLB. POINTS OF CONTACT: For further information and rotor blade disposition, contact Helicopter Technology Company (HTC), LLC at (310) 523-2750, or FAX (310) 523-2745. www.helicoptertech.com THIS SERVICE BULLETIN IS FAA APPROVED

All MD HELICOPTERS 600N service bulletins