AD 62-27-07

AD Final Rules - DRS_62-27-07.html
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AD Number:
62-27-07
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
LOCKHEED Models 1049C, 1049D, 1049E, 1049G, and 1049H Series Aircraft
Subject:
Wing Front Spar Lower Cap and Web
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
01/28/1963
Make:
Lockheed Aircraft Corporation
Model:
1049C-55 | 1049D-55 | 1049E-55 | 1049G-82 | 1049H-82
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Superseded AD: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Superseded By: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: 62-27-07
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   62-27-07

SUBJECT HEADING:   LOCKHEED Models 1049C, 1049D, 1049E, 1049G, and 1049H Series Aircraft

ACTION:  

SUMMARY:  

DATES:   Effective January 28, 1963.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
62-27-07 LOCKHEED: Amdt. 521 Part 507 Federal Register December 27, 1962. Applies to All Models 1049C, 1049D, 1049E, 1049G, and 1049H Series Aircraft Which Have Accumulated 20,000 or More Hours' Time in Service and to Aircraft With Less Than 20,000 Hours' Time In Service, Upon the Accumulation of 20,000 Hours' Time In Service.

Compliance required as indicated.

As a result of fatigue cracking of the wing front spar lower cap and web at wing Station 325, accomplish the following:

(a) Unless already accomplished within 1,100 hours' time in service prior to the effective date of this AD all aircraft shall be inspected and repaired or reinforced as necessary within the next 400 hours' time in service following the effective date of this AD, and at periodic intervals thereafter not to exceed 1,500 hours' time in service as follows:

(1) Use X-ray film of the AAM type in a double loaded holder. Place the film on the front beam cap horizontal leg on each side of wing Station 325 and as close to wing Station 325 as possible. Use a minimum of 60 KV and 5 milliamps at 36 inches focal distance with an exposure time of approximately 3 minutes. The exposure is to be taken at 90 degrees to the wing lower skin. All sealing compound in the area to be inspected must be removed prior to inspection.

(i) If no cracks are detected in the forward horizontal leg by the X- ray inspection, inspection of the spar cap and lower main beam web is not required.

(ii) If a crack is detected in the forward horizontal leg by the X-ray inspection, inspection of the spar cap and lower main beam web is required. All sealing compound in the area to be inspected must be removed prior to inspection. Inspection of the aft horizontal and vertical leg and inspection of the lower main beam web shall be accomplished by use of either radiographic or dye penetrant method.

(2) All aircraft that are inspected in accordance with (a)(1)(i) and are found not to be cracked may be returned to service. Any cracked spar caps or webs shall be repaired in accordance with Lockheed Structural Repair Manual, Report No. 8882, or FAA approved equivalent prior to returning the aircraft to service. Repairs made in this area must be sealed against fuel leakage in accordance with Lockheed Report No. 5909 or FAA approved equivalent.

(b) The periodic reinspection may discontinued on aircraft:

(1) on which the spar caps are found not to be cracked if such spar caps are reinforced in accordance with Lockheed 1049 Service Bulletin No. 3110, dated March 31, 1961, or FAA approved equivalent; and

(2) on which the cap and web are repaired and sealed in accordance with (a)(2).

(c) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Western 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.

(Lockheed Field Service Letter FS/240885L, dated April 15, 1962, covers this same subject.)

This directive effective January 28, 1963.

FOOTER: