AD 70-17-03

AD Final Rules - DRS_70-17-03.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
70-17-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Hughes Model 269 Series Helicopters
Subject:
Flapping Hinge Bolts
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/20/1970
Make:
Schweizer Aircraft Corporation
Model:
269A | 269A-1 | 269B | 269C
Product Type:
Aircraft
Product Subtype:
Small Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 70-17-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1070

AD NUMBER:   70-17-03

SUBJECT HEADING:   Airworthiness Directives; Hughes Model 269 Series Helicopters

ACTION:  

SUMMARY:  

DATES:   Effective August 20, 1970.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   70-17-03 HUGHES: Amdt. 39-1070. Applies to Model 269 Series helicopters certificated in all categories, which incorporate lead-lag and flapping hinge bolts, P/N HS 1446- 10-68, (only the lead-lag bolts are affected on Model 269C) with vendor identification BM (stylized) impression stamped on top of the bolt heads hereinafter referred to a BM bolts.
Compliance required as indicated.

To detect cracks in the BM bolts, P/N HS 1446-10-68, accomplish the following:

Within 50 hours time in service after the effective date of this AD, unless already accomplished, remove all BM bolts in accordance with Hughes Handbook of Maintenance Instruction (BM bolts with the head dyed green or a white dot painted in the recessed head have been inspected and are not affected by this AD. The white dot was used in instances where the green dye application was not effective.) Perform a magnaflux inspection of the BM bolts for evidence of cracking.

(a) Replace any BM bolt which shows evidence of cracking, with a serviceable bolt prior to further flight. Efface the part number of any cracked bolts sufficiently to prevent their inadvertent return to service.

(b) Any BM bolt which shows no evidence of cracking may be returned to service after it has been identified with a white dot painted in the recessed head of the bolt.

NOTE: (Hughes Service Information Notice No. N-78, dated July 31, 1970, pertains to the same subject.)

This amendment becomes effective August 20, 1970.

FOOTER: