AD 60-22-02

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AD Number:
60-22-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
PRATT & WHITNEY Model JT3C-6 Engines
Subject:
Combustion Chamber Outer Cases
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
Make:
Pratt & Whitney Division
Model:
JT3C-6
Product Type:
Engine
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Superseded AD: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Superseded By: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: 60-22-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   60-22-02

SUBJECT HEADING:   PRATT & WHITNEY Model JT3C-6 Engines

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
60-22-02 PRATT & WHITNEY: Amdt. 211 Part 507 Federal Register October 22, 1960. Applies to All JT3C-6 Turbojet Engines.

Compliance required as indicated.

(a) Inspect the entire circumference on the rear face of the rear flange of the combustion chamber outer case assembly P/N 255639, (case detail P/N 255640) outboard of the attaching nuts which secure the combustion chamber outer case to the turbine case as indicated below. Inspection should be performed using approximately 6-power glass. Any crack requires replacement of the case.

(1) Engines with combustion chamber outer cases which have not been hardness checked per paragraph (b) and Magnaglo inspected must be inspected per above visual inspection every 65 hours' time in service.

(2) Engines with combustion chamber outer cases which have been hardness checked per paragraph (b) but not Magnaglo inspected must be inspected per above visual inspection every 130 hours' time in service.

(3) Engines with combustion chamber outer cases which have been hardness checked per paragraph (b) and Magnaglo inspected do not require visual inspection.

(b) At overhaul in addition to the visual inspections above:

(1) Inspect fillet between snap diameter and front face of rear flange using approximately 6-power glass. Any crack requires replacement of the case.

(2) Check hardness of combustion chamber outer case rear flange at three locations approximately 120 degrees apart between the bolt holes of the flange. If hardness is more than Rockwell C40, the case must be replaced. After one hardness check is accomplished this hardness check is no longer required.

This supersedes AD 60-11-07.

This directive effective October 22, 1960.

Revised November 26, 1960, to all persons not receiving individual notice by telegram dated November 2, 1960.

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