AD 68-08-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FH1100 Manufacturing Corporation | FH-1100 | Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters |
Unsafe Condition
Coupling shafts with specified serial numbers (20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104, 106) may fail due to material defects or manufacturing anomalies.
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Required Actions
Remove coupling shafts with specified serial numbers from service prior to further flight and replace with the same part number but different serial numbers.
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Compliance Time
prior to further flight
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Affected Aircraft
Fairchild Hiller Model FH-1100 Helicopters with P/N 19E49-3A -3B coupling shaft serial numbers 20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104, or 106.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Coupling Shaft
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_68-08-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-08-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters Subject: Coupling Shaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/23/1968 Make: FH1100 Manufacturing Corporation Model: FH-1100 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 68-08-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-588 AD NUMBER: 68-08-09 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters ACTION: SUMMARY: DATES: Effective April 23, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-08-09 FAIRCHILD-HILLER: Amdt. 39-588. Applies to FH-1100 type Helicopters. Compliance required as follows: (a) Remove P/N 19E49-3A -3B coupling shaft serial numbers 20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104 and 106 from service prior to further flight and replace with the same part number but different serial numbers. This amendment effective April 23, 1968. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_68-08-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 68-08-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters Subject: Coupling Shaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/23/1968 Make: FH1100 Manufacturing Corporation Model: FH-1100 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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 68-08-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-588 AD NUMBER: 68-08-09 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters ACTION: SUMMARY: DATES: Effective April 23, 1968. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 68-08-09 FAIRCHILD-HILLER: Amdt. 39-588. Applies to FH-1100 type Helicopters. Compliance required as follows: (a) Remove P/N 19E49-3A -3B coupling shaft serial numbers 20, 21, 22, 23, 24, 25, 75, 77, 87, 90, 93, 98, 104 and 106 from service prior to further flight and replace with the same part number but different serial numbers. This amendment effective April 23, 1968. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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