AD 81-21-01

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AD Number:
81-21-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA315B Helicopters
Subject:
Erc Cargo Hook Assemblies
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/04/1981
Make:
Airbus Helicopters
Model:
SA.315B Alouette III
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Superseded AD: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Superseded By: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: 81-21-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-4227

AD NUMBER:   81-21-01

SUBJECT HEADING:   Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model SA315B Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective November 4, 1981.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
81-21-01 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-4227. Applies to Model SA315B helicopters, equipped with Eastern Rotorcraft Corporation (ERC) cargo hook assemblies, P/N 17112-4, Serial Numbers 1 through 103, in accordance with Supplemental Type Certificate (STC) SH1735SW, certificated in all categories (Airworthiness Docket No. 81-ASW-33).

Compliance required as indicated.

To prevent possible failure of the ERC cargo hook support legs, P/N 12579-1, due to fatigue cracks, accomplish the following, unless already accomplished, within the next 100 hours' time in service after the effective date of this AD:

a. For suspension assemblies, P/N 17112-4, which have accumulated 1,000 lifts or calendar months of service, whichever occurs first, accomplish a magnetic particle inspection of the lugs, P/N 12579-1, in accordance with Aerospatiale Helicopter Corporation Service Bulletin No. SB315-05, dated March 11, 1981, or an FAA-approved equivalent.

b. If one lug is found to have cracks, remove and replace all four lugs in accordance with Aerospatiale Helicopter Corporation Service Bulletin No. SB315-04, dated January 20, 1981, or an FAA-approved equivalent.

c. If no lugs are cracked, reinstall and accomplish magnetic particle inspections at intervals of 1,000 lifts or 12 calendar months, whichever occurs first, as required by paragraph a. of this AD.

d. The inspections required by paragraph a. of this AD are not required after compliance with Aerospatiale Helicopter Corporation Service Bulletin No. SB315-04.

e. The helicopter may be flown in accordance with FAR 21.197 to a base where inspections can be performed.

f. For the purpose of complying with this AD, subject to acceptance by the assigned FAA maintenance inspector, the number of lifts may be determined by multiplying each helicopter's hours' time in service by the operator's fleet average lifts per hour for the helicopter type.

This amendment becomes effective November 4, 1981.

FOOTER: