AD 71-24-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | FH1100 Manufacturing Corporation | FH-1100 | Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters |
Unsafe Condition
Fatigue failure of the rear attachment lug on engine mount strut P/N 24-63110-1
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and replace if necessary engine mount strut P/N 24-63110-1 in accordance with Service Bulletin SB FH1100-71-2. Alter the engine mount strut in accordance with the same Service Bulletin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
FH1100 Manufacturing Corporation Model FH-1100 Helicopters certificated in all categories
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Federal Register Abstract
Attach Lug Engine Mount Strut
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-24-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-24-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters Subject: Attach Lug Engine Mount Strut Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1971 Make: FH1100 Manufacturing Corporation Model: FH-1100 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185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: 71-24-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1338 AD NUMBER: 71-24-06 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters ACTION: SUMMARY: DATES: Effective November 26, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-24-06 FAIRCHILD HILLER ROTORCRAFT: Amdt. 39-1338. Applies to FH1100 Type Helicopters Certificated in all Categories. Compliance required as indicated. To preclude fatigue failure of the rear attachment lug on engine mount strut P/N 24-63110-1 accomplish the following: a. Within the next 25 hours' time in service after the effective date of this AD unless already accomplished, inspect and replace if necessary, engine mount strut P/N 24-63110-1 in accordance with Section 2, subsection A.1. and A.2., Accomplishment Instructions, Fairchild Hiller Service Bulletin SB FH1100-71-2 dated 30 September 1971 or later FAA-approved revision or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. b. Within the next 100 hours' time in service after the effective date of this AD unless already accomplished, alter engine mount strut P/N 24-63110-1 in accordance with Section 2, subsection A.3. through A.8., Accomplishment Instructions, F/H Service Bulletin SB FH1100-71-2 dated 30 September 1971 or later FAA-approved revision or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective November 26, 1971. FOOTER:
Document Text
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AD Final Rules - DRS_71-24-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-24-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters Subject: Attach Lug Engine Mount Strut Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/26/1971 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: 71-24-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1338 AD NUMBER: 71-24-06 SUBJECT HEADING: Airworthiness Directives; Fairchild Hiller Model FH-1100 Helicopters ACTION: SUMMARY: DATES: Effective November 26, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-24-06 FAIRCHILD HILLER ROTORCRAFT: Amdt. 39-1338. Applies to FH1100 Type Helicopters Certificated in all Categories. Compliance required as indicated. To preclude fatigue failure of the rear attachment lug on engine mount strut P/N 24-63110-1 accomplish the following: a. Within the next 25 hours' time in service after the effective date of this AD unless already accomplished, inspect and replace if necessary, engine mount strut P/N 24-63110-1 in accordance with Section 2, subsection A.1. and A.2., Accomplishment Instructions, Fairchild Hiller Service Bulletin SB FH1100-71-2 dated 30 September 1971 or later FAA-approved revision or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. b. Within the next 100 hours' time in service after the effective date of this AD unless already accomplished, alter engine mount strut P/N 24-63110-1 in accordance with Section 2, subsection A.3. through A.8., Accomplishment Instructions, F/H Service Bulletin SB FH1100-71-2 dated 30 September 1971 or later FAA-approved revision or an alternate method approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment is effective November 26, 1971. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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