AD 61-24-01

AD Final Rules - DRS_61-24-01.html
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AD Number:
61-24-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; BOEING All 707/720 Series and DOUGLAS DC-8 Series Aircraft
Subject:
Main Oil Screen
Status:
Current
Citation:
(Federal Register: November 23, 1961)
Citation Publish Date:
11/23/1961
Effective Date:
Make:
The Boeing Company
Model:
707-100 Long Body | 707-100B Long Body | 707-100B Short Body | 707-200 | 707-300 Series | 707-300B Series | 707-300C Series | 707-400 Series ...Show more
Product Type:
Aircraft
Product Subtype:
Large 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Superseded AD: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Superseded By: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: 61-24-01
CITATION:   [Federal Register: November 23, 1961]

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   61-24-01

SUBJECT HEADING:   Airworthiness Directives; BOEING All 707/720 Series and DOUGLAS DC-8 Series Aircraft

ACTION:  

SUMMARY:  

DATES:  

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
61-24-01 BOEING AND DOUGLAS: Amdt. 369 Part 507 Federal Register November 23, 1961. Applies to all 707/720 Series and DC-8 Series aircraft equipped with Pratt & Whitney Aircraft JT3C-12, JT3D-1, JT3D-1-MC6, JT3D-1-MC7, and JT3D-3 engines.

Compliance required as indicated.

A recent failure of the low compressor turbine shaft resulted in overspeeding and separation of the low compressor turbines. To prevent recurrence of this difficulty, the following action is required on any turbine engine that has been disassembled since last overhaul to the extent of exposing any bearing compartment:

At periods not to exceed 12 hours' time in service, the main oil screen shall be disassembled, inspected and cleaned in accordance with Pratt and Whitney Overhaul Manual. The inspection shall be repeated until the screen is free of contamination for two successive inspections. If contaminants indicative of engine part failure or contaminants in sufficient quantity to plug the oil screen are found during any inspection the engine shall not be operated until the cause of the difficulty has been determined and satisfactorily corrected.

Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator.

(Pratt and Whitney telegram to all turbojet engine operators dated November 9, 1961, covers the same subject.)

This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated November 10, 1961.

Revised February 13, 1962, and June 7, 1962.


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