AD 64-20-01

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AD Number:
64-20-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
HARTZELL Models HC-C2YK-1/7666-2 and HC-E2YL-2B/7663-4 Propellers
Subject:
Pitch Change Blocks
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/28/1964
Make:
Hartzell Propeller, Inc.
Model:
HC-C2Y | HC-E2Y
Product Type:
Propeller
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 64-20-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-803

AD NUMBER:   64-20-01

SUBJECT HEADING:   HARTZELL Models HC-C2YK-1/7666-2 and HC-E2YL-2B/7663-4 Propellers

ACTION:  

SUMMARY:  

DATES:   Effective August 28, 1964.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
64-20-01 HARTZELL: Amdt. 803 Part 507 Federal Register August 28, 1964. Applies to Models HC-C2YK-1/7666-2 Serial Numbers AW-1 to AW-603 and HC-E2YL-2B/7663-4 Propellers Serial Numbers BG-1 to BG-777.

Compliance required as indicated.

There have been incidents of failure of the plastic pitch change blocks in Hartzell HC- E2YL-2B and HC-C2YK-1 propellers which resulted in severe roughness or vibration in flight. To correct this condition, accomplish the following:

(a) Inspect propeller blades for pitch change movement and replace plastic pitch change blocks as necessary in accordance with Hartzell Service Bulletin No. 86 revised June 17, 1964, within 10 hours' time in service after the effective date of this AD unless already accomplished within the last 10 hours' time in service, and thereafter within every 10 hours' time in service from the last inspection.

(b) When the modification specified in Hartzell Service Bulletin No. 86, revised June 17, 1964, has been accomplished, the repetitive inspections specified in paragraph (a) may be discontinued.

(Hartzell Service Bulletin No. 86, revised June 17, 1964, covers this same subject.)

This directive effective August 28, 1964.

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