AD 77-21-06

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AD Number:
77-21-06
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Piper Models PA-25, PA-25-235 and PA-25-260 Airplanes
Subject:
Fuselage Steel Tubing Cluster
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
10/19/1977
Make:
Lavia Argentina S.A. (Laviasa)
Model:
PA-25 | PA-25-235 | PA-25-260
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Superseded AD: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Superseded By: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: 77-21-06
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3058

AD NUMBER:   77-21-06

SUBJECT HEADING:   Airworthiness Directives; Piper Models PA-25, PA-25-235 and PA-25-260 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective October 19, 1977.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
77-21-06 PIPER: Amendment 39-3058. Applies to Models PA-25, PA-25-235 and PA-25-260, Serial Nos. 25-1 and up, certificated in all categories.

To prevent weakening of the fuselage steel tubing cluster in the area of the rear wing spar attachment due to corrosion of the fuselage tubing, accomplish the following:

(a) Within the next 30 days in service after the effective date of this AD or upon the attainment of a total of 1 year in service, whichever occurs later, unless previously accomplished within the last year and at intervals not to exceed 1 year from the last inspection, inspect the fuselage steel tubing cluster in the area of the rear wing spar attachment and repair if necessary, in accordance with the "Instructions" section of Piper Service Bulletin No. 551 dated April 22, 1977, or equivalent. The aircraft may be flown in accordance with FAR 21.197 to a base where inspection and repair can be made.

(b) Equivalent inspections and repairs must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

(c) Upon submission of substantiating data by an owner or operator through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the inspection intervals specified in this AD.

This amendment is effective October 19, 1977.

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