AD 47-32-14

AD Final Rules - DRS_47-32-14.html
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AD Number:
47-32-14
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Bell Model 47B Helicopters
Subject:
Engine Mount Clamps
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Scotts-Bell 47 Inc
Model:
47B
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Superseded AD: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Superseded By: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: 47-32-14
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   47-32-14

SUBJECT HEADING:   Airworthiness Directives; Bell Model 47B Helicopters

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
47-32-14 BELL: (Was Service Note 1 of AD-1H-1.) Applies Only to Model 47B Serial Numbers 5, 6, and 10.

Inspection required at intervals not to exceed 100-hours.

In order to prevent misalignment of the tail rotor drive quill and tail rotor drive shaft and powerplant installation, due to the shifting of the engine mount assembly, caused by the insufficient clamping of the engine mount to the rubber mounts, the following action should be taken:

(1) Inspect AN 365-524 nuts on AN 5-20A bolts in the "clamp" ends of the 47-612- 111-1 engine mount assembly for bottoming of nuts. If this condition is found, proceed as outlined in steps (2), (3), and (4).

(2) Remove bolts from "clamps" and install AN 960-516 washers as required under the head of each bolt. Replace bolts in "clamps" and install nuts loosely.

(3) Check installation of engine mount assembly on rubber mounts 47-600-011-1. Front face of left mount "clamp" must be 5/32 inch aft of front face of metal case of rubber mount.

(4) Torque nuts to 100-140 inch-pounds.

(Bell Service Bulletin No. 47C10 also covers this same subject.)

FOOTER: