AD 71-02-03

final rule

Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes

AD Number
71-02-03
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

Applicability

TypeManufacturerModelDetails
aircraft Kelowna Flightcraft R & D Ltd. 340 Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes
aircraft Kelowna Flightcraft R & D Ltd. 440 Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes
aircraft Kelowna Flightcraft R & D Ltd. Military C-131E Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes

Unsafe Condition

Failures of the left and right main landing gears due to cracks in the main landing gear cylinders (P/N 528002 or P/N 528402) and their fulcrum arms.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Inspect the outer surface of main landing gear cylinders (P/N 528002 or P/N 528402) and fulcrum arms for cracks using magnetic particle, dye penetrant, or approved methods. If cracks are found, rework cylinders per approved method or replace with inspected/crack-free cylinders. For reworked cylinders, record rework details, limit use to aircraft below 55,000 lbs take-off weight, and reinspect every 1,000 hours time in service. If no cracks and less than 14,000 hours time in service, reinspect before 15,000 hours. If over 14,000 hours, reinspect every 1,000 hours.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

within the next 50 hours time in service after the effective date of this AD unless already accomplished within the last 200 hours time in service

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

GENERAL DYNAMICS Model 340, 440, and C-131E airplanes, including those converted to turbopropeller power under STC SA4-1100 (Model 580)

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Main Landing Gear Failure

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_71-02-03.html
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AD Number:
71-02-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes
Subject:
Main Landing Gear Failure
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/09/1971
Make:
Kelowna Flightcraft R & D Ltd.
Model:
340 | 440 | Military C-131E
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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 71-02-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1165

AD NUMBER:   71-02-03

SUBJECT HEADING:   Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective March 9, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   71-02-03 GENERAL DYNAMICS: Amdt. 39-1145 as amended by Amendment 39- 1165. Applies to Model 340, 440 and C-131E Airplanes including those airplanes converted to turbopropeller power, certificated in all categories.

Compliance required within the next 50 hours time in service after the effective date of this AD unless already accomplished within the last 200 hours time in service.

To prevent failures of the left and right main landing gears, accomplish the following:

(a) Inspect the entire outer surface of the main landing gear cylinders (P/N 528002 or P/N 528402), including the fulcrum arms, for cracks using magnetic particle or dye penetrant methods, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(b) If cracks are found, before further flight either rework the cylinder in a manner approved by the Chief, Aircraft Engineering Division, FAA Western Region or replace the cylinder with a cylinder which has been inspected per (a) above and found free of cracks.

(c) If cylinders are reworked in accordance with (b) above, accomplish the following before further flight:

1. Identify and record the cylinders and areas reworked.

2. Limit the use of reworked cylinders to those aircraft operating below or at a maximum of 55,000 lbs. take-off gross weight. If any cylinder reworked per (b) above is installed in any aircraft converted to turbopropeller power in accordance with STC SA4-1100 (known as Model 580), install a placard in only those aircraft previously approved for operating weights above 55,000 pounds, and in full view of the pilot, which reads as follows: "Maximum take-off gross weight 55,000 lbs."

3. Repeat (a) above at intervals of 1,000 hours' time in service from the last inspection.

(d) If no cracks are found as a result of the inspection required by (a) above and it is definitely determined that a cylinder has less than 14,000 hours' time in service, repeat (a) above, before 15,000 hours' time in service have been accumulated.

(e) If no cracks are found as a result of the inspection required by (a) or (d) above, and a cylinder is considered to have more than 14,000 hours' time in service, repeat (a) above at intervals of 1,000 hours time in service from the last inspection.

Amendment 39-1145 effective January 21, 1971.

This amendment 39-1165 becomes effective March 9, 1971.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_71-02-03.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
71-02-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes
Subject:
Main Landing Gear Failure
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
03/09/1971
Make:
Kelowna Flightcraft R & D Ltd.
Model:
340 | 440 | Military C-131E
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:
Updated RGL applicability to match AD applicability; CAR C-11-185
AIRWORTHINESS DIRECTIVES FINAL RULES: 71-02-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1165

AD NUMBER:   71-02-03

SUBJECT HEADING:   Airworthiness Directives; GENERAL DYNAMICS Model 340, 440 and C-131E Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective March 9, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   71-02-03 GENERAL DYNAMICS: Amdt. 39-1145 as amended by Amendment 39- 1165. Applies to Model 340, 440 and C-131E Airplanes including those airplanes converted to turbopropeller power, certificated in all categories.

Compliance required within the next 50 hours time in service after the effective date of this AD unless already accomplished within the last 200 hours time in service.

To prevent failures of the left and right main landing gears, accomplish the following:

(a) Inspect the entire outer surface of the main landing gear cylinders (P/N 528002 or P/N 528402), including the fulcrum arms, for cracks using magnetic particle or dye penetrant methods, or an equivalent method approved by the Chief, Aircraft Engineering Division, FAA Western Region.

(b) If cracks are found, before further flight either rework the cylinder in a manner approved by the Chief, Aircraft Engineering Division, FAA Western Region or replace the cylinder with a cylinder which has been inspected per (a) above and found free of cracks.

(c) If cylinders are reworked in accordance with (b) above, accomplish the following before further flight:

1. Identify and record the cylinders and areas reworked.

2. Limit the use of reworked cylinders to those aircraft operating below or at a maximum of 55,000 lbs. take-off gross weight. If any cylinder reworked per (b) above is installed in any aircraft converted to turbopropeller power in accordance with STC SA4-1100 (known as Model 580), install a placard in only those aircraft previously approved for operating weights above 55,000 pounds, and in full view of the pilot, which reads as follows: "Maximum take-off gross weight 55,000 lbs."

3. Repeat (a) above at intervals of 1,000 hours' time in service from the last inspection.

(d) If no cracks are found as a result of the inspection required by (a) above and it is definitely determined that a cylinder has less than 14,000 hours' time in service, repeat (a) above, before 15,000 hours' time in service have been accumulated.

(e) If no cracks are found as a result of the inspection required by (a) or (d) above, and a cylinder is considered to have more than 14,000 hours' time in service, repeat (a) above at intervals of 1,000 hours time in service from the last inspection.

Amendment 39-1145 effective January 21, 1971.

This amendment 39-1165 becomes effective March 9, 1971.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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