HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

WINGS - REPLACEMENT OF CENTER WING 

1. PLANNING INFORMATION 

A. EFFECTIVITY 

This Service Bulletin is applicable to all model 382, 382B, 382E, 382F, and 382G series FAA Certificated 

Hercules aircraft (excluding 382J series aircraft). 

B. REASON 

(1) The 14 CFR Part 26, Subpart CAging Aircraft Safety- Widespread Fatigue Damage rule became 

effective on January 14, 2011 . In compliance with this rule, Lockheed Martin Aeronautics 

Company established a Limit of Validity (LOV) for 382 series aircraft, published in Section VII of 

customer specific Service Manual Publication (SMP) 515-C Inspection Programs. 14 CFR Part 

121 or Part 129 operators must have incorporated the LOV into their maintenance program by 

July 14, 2013 to comply with FAR §121 .1115 or §129.115. This Service Bulletin presents a 

maintenance action required for the center wing to safeguard the aircraft against widespread 

fatigue damage up to the LOV. 

(2) Widespread Fatigue Damage (WFD) is general degradation of large areas of structure with 

fatigue cracks manifesting and growing simultaneously at similar structural details and stress 

levels. Fatigue damage is increasingly likely as the airplane is operated and aged, and without 

intervention, WFD is likely to compromise the structural integrity of the airplane. Structural fatigue 

characteristics of airplanes are understood only up to the point where analyses and testing of the 

structure are valid. The purpose of this action is to replace the center wing box currently installed 

on the affected aircraft with a wing box of new manufacture prior to the on-set of WFD in the 

center wing box structure. 

(3) For those aircraft with less than 50,000 Center Wing Flight Hours, Lockheed Martin Aeronautics 

Company recommends replacement of the center wing prior to the accumulation of 50,000 

Center Wing Flight Hours. 

(4) For those aircraft with more than 50,000 Center Wing Flight Hours, the aircraft should be 

grounded until the replacement of the center wing is accomplished. 

(5) Aircraft that have incorporated Service Bulletin SB 382-57-90 conform to the intent of this Service 

Bulletin and do not need to accomplish the modifications specified herein. 

The replacement times indicated in this Service Bulletin do not apply to military operators of 

382, 382B, 382E, 382F, and 382G aircraft. Contact Lockheed Martin for an Operational 

Usage Evaluation/Service Life Assessment to determine an appropriate replacement 

schedule. 

Lead time for the purchase of a center wing box of new construction is approximately 24 

months. Lockheed Martin Aeronautics Company contact information can be found in 

Paragraph 1.F. EXPORT CONTROLLED INFORMATION 

WARNING- This document contains data whose export Is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et seq.) as amended, or the Export Administration Act (Title 50, U.S.C., App 2401 et seq.) as amended. Violations of these export laws are subject to severe criminal and civil penalties. 

e XUllOCio>HEEO MAA TI" COitPORATI()N \..OCKHHO UAA:TIN PftOPfi:IETAI!:Y INFOih.tATtON 

December 3, 2013 382-57-94 

Page 1 of 8 
HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

Plumbing, fuel, electrical, hydraulic, flight control components, and system components are 

the responsibility of the owner/operator. Limited salvage information can be found in the 

applicable customer Maintenance Manual or Illustrated Parts Catalog. 

These work instructions refer to methods, techniques, and practices described in other 

Lockheed Martin Aeronautics Company documents. When the words "refer to" are used and 

the operator has other acceptable methods, techniques, and practices (including tools, 

equipment, and test equipment) those procedures may be used to complete the work. When 

the words "in accordance with" are included in the instruction, the methods, techniques, and 

practices (including tools, equipment, and test equipment) specified in the Lockheed Martin 

Aeronautics Company document must be used. 

C. DESCRIPTION 

This Service Bulletin provides instructions for replacing the center wing structure on affected aircraft. 

D. APPROVAL 

(1) The aircraft owner/operator will make an appropriate entry in the aircraft log records upon 

compliance with this Service Bulletin. 

(2) After the work has been completed on each affected aircraft, please complete and mail or fax 

(770-494-5682) a Notice of Service Bulletin Compliance; or notify Lockheed Martin Aeronautics 

Company of compliance with this Service Bulletin at website address: 

http://www.lockheedmartin.com/eoc and log into Data Library. 

(3) This Service Bulletin has been approved by the FAA as complying with applicable Federal 

Aviation Regulations. 

E. MANPOWER 

The work prescribed in this Service Bulletin has not been performed at the Lockheed Martin facility. 

Therefore, the manpower estimates provided have not been validated, and should not be construed as 

being acceptable for use in making fixed price quotes for accomplishment of the work. These estimates 

are provided only as a convenience for customer planning purposes. It is estimated that approximately 

4,800 manhours (a crew of 11 men) will be required to accomplish the work described herein on each 

affected aircraft. This will take approximately two months elapsed time while the aircraft is out of 

service. 

This Service Bulletin is based upon the configuration of the aircraft as it was delivered from 

Lockheed Martin Aeronautics Company. Previous service bulletins issued by Lockheed 

Martin Aeronautics Company have been considered in the preparation of this Service 

Bulletin, but no consideration has been given to peculiar changes made to the aircraft by the 

owner/operator or the US Government since its delivery. 

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HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

F. MATERIAL - COST AND AVAILABILITY 

(1) Kits 3366300-1 , -3, -5, -7, -9, -11 , -13, -15, -17, -19, -21 , -23, or -25 listed in Paragraph 3, 

required for each affected aircraft, are available from Lockheed Martin Aeronautics Company. 

Parts bearing Lockheed Martin Aeronautics Company part numbers are considered proprietary 

and shall be purchased from Lockheed Martin Aeronautics Company unless methods of 

fabrication are shown in this publication. Inquiries concerning current prices, applicability, and 

availability of kits may be directed to the following: 

MAIL: 

TELEPHONE: 

FAX: 

Lockheed Martin Aeronautics Company 

C-130 Commercial Contracts 

Department F532 

Zone 0195 

86 South Cobb Drive 

Marietta, GA 30063-0195, USA 

(770) 494-5165 

(817) 655-9700 

(2) Additional bulk materials, not included in the kit, will be supplied by the aircraft owner/operator. 

G. TOOLING- PRICE AND AVAILABILITY 

The following tooling is required and will be obtained through the applicable supply source: 

Quantit~ Part Number Nomenclature 

2 C26942100 Center Wing Tooling Tower 

C269421 00-201 Exterior Tooling Tower 

C269421 00-202 Exterior Tooling Tower 

2 C26942100-219 Tooling Tower Locating Plate 

C269421 00-405 Wing End Gate 

C269421 00-406 Wing End Gate 

2 C269421 00-434 Angle Fitting 

2 C269421 00-440 Aft Fuselage Tie Down Fitting 

C269421 00-501 FS 517 Cross Brace 

C269421 00-502 FS 597 Cross Brace 

2 C269421 00-503 FS 457 I FS 637 Cross Brace 

1 C269421 00-519 Cross Brace End Bracket 

C269421 00-520 Cross Brace End Bracket 

C269421 00-537 Cross Brace End Bracket 

C269421 00-538 Cross Brace End Bracket 

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HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

Quantit~ Part Number 

2 C269421 00-546 

4 C269421 00-564 

4 C269421 00-565 

C26942102 

C26942103 

C26942104 

H. WEIGHT AND BALANCE 

Nomenclature 

MLG Tie Down Fitting 

End Gate Positioner Assembly 

End Gate Roller Assembly 

Internal Scaffold 

Cradle, Center Wing 

Sling 

Due to the nature of the center wing replacement, the actual weight and balance changes, resulting 

from the instructions herein, cannot be accurately determined. Therefore, the aircraft must be weighed 

in accordance with the applicable aircraft Weight & Balance Manual. 

I. REFERENCES 

Hercules Maintenance Manual, SMP581 

Lockheed Martin Aeronautics Company Drawings 

J. OTHER PUBLICATIONS AFFECTED 

Hercules Corrosion Prevention and Control Manual 

Hercules Illustrated Parts Catalog 

Hercules Structural Repair Manual 

Hercules Wiring Diagram Manual 

3365454, 3366300, 398298 

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December 3, 2013 
HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

2. ACCOMPLISHMENT INSTRUCTIONS 

This Bulletin identifies the action, designates the aircraft affected, provides applicable planning information, and identifies the parts, materials, and drawings required for installation. This modification will be 

accomplished in accordance with Lockheed Martin Aeronautics Company Top Kit Drawing 3366300 and 

Installation Procedures Drawing 3365454. 

WARNING: OBSERVE ALL APPLICABLE SAFETY PRECAUTIONS WHILE ACCOMPLISHING THIS 

MODIFICATION. ENSURE THAT ALL ELECTRICAL AND HYDRAULIC POWER 

SOURCES ARE OFF, THE BATTERY AND EXTERNAL ELECTRICAL POWER 

DISCONNECTED, AND HYDRAULIC SYSTEMS DEPRESSURIZED BEFORE STARTING 

THE WORK. FAILURE TO COMPLY MAY RESULT IN SERIOUS INJURY OR DEATH. 

NOTE: In case of any discrepancy between these instructions and Installation Procedures drawings, the 

actual drawings shall take precedence. 

A. Unload replacement center wing. Refer to Drawing 3365454 Chapter I, Paragraph A for instructions. 

B. Prepare aircraft for maintenance and align aircraft. Refer to Drawing 3365454 Chapter II, Paragraph A. 

and Drawing 398298 for instructions. 

C. Level aircraft. Refer to Drawing 3365454 Chapter II, Paragraph B for instructions. 

D. Shore aircraft internally in accordance with Drawing 3365454 Chapter II, Paragraph C. 

E. Replace MLG Main Frame at Fuselage Station 517 in accordance with Drawing 3365454 Chapter II, 

Paragraph D. 

F. Remove old wing in accordance with Drawing 3365454 Chapter II, Paragraph E. 

G. Prepare fuselage for installation of new wing in accordance with Drawing 3365454 Chapter II, 

Paragraph F. 

H. Prepare new wing for installation in accordance with Drawing 3365454 Chapter II, Paragraph G. 

I. Install new wing in accordance with Drawing 3365454 Chapter II, Paragraph H. 

J. Perform operational checks (if specified equipment is installed) of disturbed equipment. Refer to 

applicable Hercules Maintenance Manual (or equivalent approved operator procedures) for instructions. 

K. Perform functional check flight of modified aircraft. 

L. Restore aircraft to service. 

If assistance is needed, contact your local Lockheed Martin Aeronautics Company 

Representative, or the Enterprise Operations Center- Technical Support in Marietta, Georgia, USA, as follows: 

TELEPHONE: (770) 494-9131 

FAX: 

E-MAIL: 

MAIL: 

December 3, 2013 

(770) 494-9122 

hercules.support@lmco.com 

Lockheed Martin Aeronautics Company 

86 South Cobb Drive 

Dept. 3E1M, Zone 0591 

Marietta, GA 30063, USA 

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HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

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December 3, 2013 
HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

3. MATERIAL INFORMATION 

Lockhheed Martin Aeronautics Company Top Kit Drawing Installations 3366300-1 , -3, -5, -7, 

-9, -11 , -13, -15, -17. -19, -21 , -23, or -25 will detail aircraft modifications required to facilitate 

replacement of aircraft center wing and structure. 

The following kits will be provided by the aircraft owner/operator and are required to modify FAA-Certificated 

aircraft listed in Paragraph 1.A. Kits may be obtained from Lockhheed Martin in accordance with 

Paragraph 1.F. 

Drawings and diagrams necessary for installation are listed with the Kit. 

NEW PART INSTRUCTIONS/ 

NUMBER QUANTITY KEYWORD DISPOSITION 

3366300-1 Top Kit- Center Wing Replacement, FAA Note 1 

3366300-3 Top Kit- Center Wing Replacement, FAA Note 2 

3366300-5 Top Kit- Center Wing Replacement, FAA Note 3 

3366300-7 Top Kit- Center Wing Replacement, FAA Note 4 

3366300-9 Top Kit - Center Wing Replacement, FAA Note 5 

3366300-11 Top Kit- Center Wing Replacement, FAA Note 6 

3366300-13 Top Kit - Center Wing Replacement, FAA Note 7 

3366300-15 Top Kit- Center Wing Replacement, FAA Note 8 

3366300-17 Top Kit- Center Wing Replacement, FAA Note 9 

3366300-19 Top Kit- Center Wing Replacement, FAA Note 10 

3366300-21 Top Kit- Center Wing Replacement, FAA Note 11 

3366300-23 Top Kit- Center Wing Replacement, FAA Note 12 

3366300-25 Top Kit- Center Wing Replacement, FAA Note 13 

NOTE: 1. Applies to center wings installed on Serials 3946 and 4134. 

2. Applies to center wings installed on Serials 4144, 4147, 4208, and 4248. 

3. Applies to center wings installed on Serials 4299 through 4302, 4355, and 4358. 

4. Applies to center wings installed on Serials 4383, 4385, 4388, 4472, 4475, and 4512. 

5. Applies to center wings installed on Serials 4562 and 4565. 

6. Applies to center wings installed on Serials 4582, 4590, 4600, 4606, and 4610. 

7. Applies to center wings installed on Serials 4673, 4676, 4684, 4691 , 4695, and 4698. 

8. Applies to center wings installed on Serials 4706, 4710, and 4715. 

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HERCULES Lockheed Martin Aeronautics Company 

Marietta, Georgia 30063 

SERVICE BULLETIN 

File: 1-3684 

382-57-94 

Page 8 

9. Applies to center wings installed on Serials 4763, 4796, 4798 through 4800, 4828, 

4834, 4850, 4851 , and 4853. 

10. Applies to center wings installed on Serials 4886, 4889, 4891, 4893, and 4895. 

11 . Applies to center wings installed on Serials 4923, 4950, 4952, 4954, 4956, 4957, 

4960, 4992, 5000, 5022, 5024, 5025, 5027, 5032, 5048, 5055, 5056, and 5225. 

12. Applies to center wings installed on Serials 4951 , 4953, and 4955. 

13. Applies to center wings installed on Serials 5306, 5307, and 5320. 

___ # _ _ 

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