AD 68-02-04

final rule

Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters

AD Number
68-02-04
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

Applicability

TypeManufacturerModelDetails
aircraft FH1100 Manufacturing Corporation FH-1100 Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters

Unsafe Condition

Fatigue failures of the Cyclic Input Swashplate Ring, P/N 24-34205-3.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Visually inspect the cyclic input swashplate ring within 10 hours' time in service after the effective date and every 25 hours thereafter. Remove or rework rings with 75+ hours time in service on the effective date within 25 hours, or before 100 hours for others. Modified rings can be used until 750 hours with discontinuation of inspections after satisfactory dye penetrant inspection.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within the next 10 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 25 hours' time in service from the last inspection.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Fairchild-Hiller Model FH-1100 Helicopters, Serial Numbers 9 through 49.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Cyclic Input Swashplate Ring

Applicability Source Text

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AD Final Rules - DRS_68-02-04.html
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AD Number:
68-02-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters
Subject:
Cyclic Input Swashplate Ring
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/27/1968
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Superseded AD: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Superseded By: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: 68-02-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-544

AD NUMBER:   68-02-04

SUBJECT HEADING:   Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective January 27, 1968.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
68-02-04 FAIRCHILD-HILLER: Amendment 39-544. Applies to Type FH-1100 Helicopters, Serial Numbers 9 through 49.

Compliance required as indicated.

To prevent fatigue failures of the Cyclic Input Swashplate Ring, P/N 24-34205-3, accomplish the following:

(a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 25 hours' time in service from the last inspection, visually inspect the cyclic input swashplate ring, P/N 24-34205-3, in accordance with Part A (excluding paragraph 5) of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967, or later revisions approved by the Chief, Engineering & Manufacturing Branch, Federal Aviation Administration, Eastern Region. Equivalent inspections may be approved by an FAA maintenance inspector.

(b) If a crack is found, remove the ring from service prior to further flight.

(c) Accomplish the following on rings that have not been reworked in accordance with Part B of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967:

(1) Remove from service or rework in accordance with Part B of the aforementioned Letter rings with 75 or more hours time in service on the effective date of this AD within the next 25 hours' time in service.

(2) Remove from service or rework in accordance with Part B of the aforementioned Letter all other rings before the accumulation of 100 hours' time in service.

(d) Rings which have been modified in accordance with Part B of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967, or in accordance with any other method approved by the Chief, Engineering & Manufacturing Branch, Federal Aviation Administration, Eastern Region may be continued in service until the accumulation of 750 hours' time in service. The 25-hour repetitive inspection of (a) may be discontinued on modified rings when a satisfactory inspection for cracks has been accomplished on the ring after it has been modified, by the dye penetrant method or an equivalent approved by an FAA maintenance inspector.

This AD is effective January 27, 1968.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_68-02-04.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
68-02-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters
Subject:
Cyclic Input Swashplate Ring
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/27/1968
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: 68-02-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-544

AD NUMBER:   68-02-04

SUBJECT HEADING:   Airworthiness Directives, Fairchild-Hiller Model FH-1100 Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective January 27, 1968.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
68-02-04 FAIRCHILD-HILLER: Amendment 39-544. Applies to Type FH-1100 Helicopters, Serial Numbers 9 through 49.

Compliance required as indicated.

To prevent fatigue failures of the Cyclic Input Swashplate Ring, P/N 24-34205-3, accomplish the following:

(a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 25 hours' time in service from the last inspection, visually inspect the cyclic input swashplate ring, P/N 24-34205-3, in accordance with Part A (excluding paragraph 5) of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967, or later revisions approved by the Chief, Engineering & Manufacturing Branch, Federal Aviation Administration, Eastern Region. Equivalent inspections may be approved by an FAA maintenance inspector.

(b) If a crack is found, remove the ring from service prior to further flight.

(c) Accomplish the following on rings that have not been reworked in accordance with Part B of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967:

(1) Remove from service or rework in accordance with Part B of the aforementioned Letter rings with 75 or more hours time in service on the effective date of this AD within the next 25 hours' time in service.

(2) Remove from service or rework in accordance with Part B of the aforementioned Letter all other rings before the accumulation of 100 hours' time in service.

(d) Rings which have been modified in accordance with Part B of Fairchild Hiller Service Information Letter No. 2 dated August 11, 1967, or in accordance with any other method approved by the Chief, Engineering & Manufacturing Branch, Federal Aviation Administration, Eastern Region may be continued in service until the accumulation of 750 hours' time in service. The 25-hour repetitive inspection of (a) may be discontinued on modified rings when a satisfactory inspection for cracks has been accomplished on the ring after it has been modified, by the dye penetrant method or an equivalent approved by an FAA maintenance inspector.

This AD is effective January 27, 1968.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.