AD 76-25-03

AD Final Rules - DRS_76-25-03.html
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AD Number:
76-25-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BOEING VERTOL Model 107-11 Helicopters
Subject:
Main Rotor Blade Spars
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/10/1976
Make:
Columbia Helicopters, Inc.
Model:
107-II
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Superseded AD: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Superseded By: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: 76-25-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2784

AD NUMBER:   76-25-03

SUBJECT HEADING:   Airworthiness Directives; BOEING VERTOL Model 107-11 Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective December 10, 1976.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
76-25-03 BOEING VERTOL: Amendment 39-2784. Applies to Boeing Vertol Model 107-11 Helicopters Certificated in all Categories.

Compliance required as follows:

To detect corrosion which could lead to cracking of the main rotor blade spars accomplish the following within the next 60 days unless already accomplished within the past 34 months and every 36 months thereafter.

a) Inspect for corrosion, and alter if necessary, main rotor blades P/N's 107R1202 and SK24790 series in accordance with Boeing Vertol Company Service Bulletin No. 107-333 (R-1) dated July 1, 1976, Section 2 (Accomplishment Instructions" or Boeing Vertol Company Service Bulletin No. 107-334 dated October 29, 1976, Section 2 "Accomplishment Instructions" or equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

b) If spar corrosion exceeds the limits in either of the above service bulletins or those approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, replace the main rotor blade with one that has been inspected and altered if necessary, in accordance with one of the above service bulletins and/or an acceptable equivalent procedure.

This amendment is effective December 10, 1976.

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