AD 80-03-06

AD Final Rules - DRS_80-03-06.html
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AD Number:
80-03-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
GENERAL ELECTRIC Model CF6-6 Series Engines
Subject:
Stage 2 HPT Disks
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
02/08/1980
Make:
General Electric Company
Model:
CF6-6D | CF6-6D1 | CF6-6D1A | CF6-6K | CF6-6K2
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Superseded AD: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Superseded By: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: 80-03-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3683

AD NUMBER:   80-03-06

SUBJECT HEADING:   GENERAL ELECTRIC Model CF6-6 Series Engines

ACTION:  

SUMMARY:  

DATES:   Effective February 8, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
80-03-06 GENERAL ELECTRIC: Amendment 39-3683. Applies to General Electric CF6-6 series engines, Stage 2 HPT disks, Part Numbers 9083M48P01, 9084M52P02, 9084M52P05, 9137M15P01, and 9137M15P02. Compliance is required as indicated. To preclude disk failure due to fatigue, these disks are to be removed from service as follows:

(a) All disks, except those noted in (c) below, which have more than 8400 cycles on the effective date of this AD are to be removed from service within 100 cycles.

(b) All disks, except those noted in (c) below, which have less than 8400 cycles are to be removed before they accrue 8500 cycles.

(c) Those disks, P/N 9137M15P02, with Serial Numbers MP036073, MP030786, MP030797, MP035005, and RPO24722 because of their refurbishment schedule shall be removed from service before they accrue 8800 cycles.

(d) Other disks than those identified in (c) above may be allowed additional cycles on an individual basis when approved by the Chief, Engineering and Manufacturing Branch, FAA, Great Lakes Region.

CF6-6 Service Bulletin 72-761 dated November 28, 1979 also applies to this subject.

This amendment becomes effective on February 8, 1980.

FOOTER: