AD 59-10-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kaman Aerospace Corporation | K-240 | Airworthiness Directives; KAMAN: All Model K-240 Helicopters (Military HTK-1) |
Unsafe Condition
Wood type cheek plate rotor blades (P/N K411042-1, -2, -7, and -8) are ineligible for use due to associated adverse service experience.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace or modify wood type cheek plate rotor blades with fiberglass type blades (P/N K411042-77 and -78) and establish a 2,500-hour retirement life.
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Affected Aircraft
Kaman Aerospace Corporation Model K-240 Helicopters (Military HTK-1)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Wood Check Plate Rotor Blades
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_59-10-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-10-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; KAMAN: All Model K-240 Helicopters (Military HTK-1) Subject: Wood Check Plate Rotor Blades Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Kaman Aerospace Corporation Model: K-240 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 59-10-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-10-06 SUBJECT HEADING: Airworthiness Directives; KAMAN: All Model K-240 Helicopters (Military HTK-1) ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-10-06 KAMAN: Applies to All K-240 Helicopters (Military HTK-1). Due to associated adverse service experience, the wood type cheek plate rotor blades, P/N K411042-1, -2, -7, and -8 are ineligible for use. These blades modified to conform to, or replaced by, fiberglass type cheek plate rotor blades, P/N K411042-77 and -78, are acceptable with a 2,500-hour retirement life. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_59-10-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-10-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; KAMAN: All Model K-240 Helicopters (Military HTK-1) Subject: Wood Check Plate Rotor Blades Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Kaman Aerospace Corporation Model: K-240 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 59-10-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-10-06 SUBJECT HEADING: Airworthiness Directives; KAMAN: All Model K-240 Helicopters (Military HTK-1) ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-10-06 KAMAN: Applies to All K-240 Helicopters (Military HTK-1). Due to associated adverse service experience, the wood type cheek plate rotor blades, P/N K411042-1, -2, -7, and -8 are ineligible for use. These blades modified to conform to, or replaced by, fiberglass type cheek plate rotor blades, P/N K411042-77 and -78, are acceptable with a 2,500-hour retirement life. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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