AD 86-16-10

final rule

Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes

AD Number
86-16-10
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 Bombardier Inc. CL-44D4 Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes
aircraft Bombardier Inc. CL-44J Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes

Unsafe Condition

Failure of the aft attachment lugs on the main landing gear upper forging, P/N 44-87573-2.

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

Required Actions

Remove specified parts from both main landing gear legs, inspect the bore of the upper and lower jack attachment lugs for cracks using fluorescent penetrant procedures, and replace cracked parts with serviceable parts of the same part number before further flight.

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

Compliance Time

Within the next 30 days after the effective date of this Airworthiness Directive (AD), and at intervals thereafter not to exceed 2000 hours time-in-service or one year, whichever occurs first.

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

Affected Aircraft

Bombardier Inc. CL-44D4 and CL-44J airplanes certificated in any category.

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

Federal Register Abstract

Lugs - Main Landing Gear

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_86-16-10.html
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Details
AD Number:
86-16-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes
Subject:
Lugs - Main Landing Gear
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/08/1986
Make:
Bombardier Inc.
Model:
CL-44D4 | CL-44J
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Superseded AD: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Superseded By: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: 86-16-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5378

AD NUMBER:   86-16-10

SUBJECT HEADING:   Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective September 8, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-16-10 CANADAIR: Amendment 39-5378. Applies to all Canadair CL-44D4 and CL-44J airplanes certificated in any category. Compliance required as indicated, unless previously accomplished.

To prevent failure of the aft attachment lugs on the main landing gear upper forging, P/N 44-87573-2, accomplish the following, unless already accomplished.

A. Within the next 30 days after the effective date of this Airworthiness Directive (AD), and at intervals thereafter not to exceed 2000 hours time-in-service or one year, whichever occurs first:

1. Remove the parts shown in Figure 1 of Canadair Service Information Circular (SIC) No. 419-CL44, dated May 18, 1978, from both main landing gear legs: jack attach bracket assemblies, P/N 44-87593; spacers, P/N 44-87639; pins, P/N 44-87725-2; attaching parts, and bushings, P/N 44-87624-2, if necessary.

2. Inspect the bore of the upper and lower jack attachment lugs of the left and right main gear leg upper forgings, P/N 44-87573-2, for cracks, using fluorescent penetrant procedures.

3. Replace cracked parts, prior to further flight, with serviceable parts of the same part number which have been inspected in accordance with the requirements of this AD.

B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the inspections and replacement of parts required by this AD.

D. Upon the request of an operator, an FAA Maintenance Inspector, subject to approval by the Manager, New York Aircraft Certification Office, FAA, New England Region, may adjust the inspection times specified in this AD to permit compliance at an established inspection period of that operator if the request contains substantiating data to justify the change for that operator.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Canadair Limited, Commercial Aircraft Technical Services, Box 6087, Station A, Montreal, Quebec H3C 3G9, Canada. These documents may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Valley Stream, New York.

This Amendment becomes effective September 8, 1986.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_86-16-10.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
86-16-10
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes
Subject:
Lugs - Main Landing Gear
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/08/1986
Make:
Bombardier Inc.
Model:
CL-44D4 | CL-44J
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: 86-16-10
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5378

AD NUMBER:   86-16-10

SUBJECT HEADING:   Airworthiness, Directives; CANADAIR Models CL-44D4 and CL-44J Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective September 8, 1986.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   86-16-10 CANADAIR: Amendment 39-5378. Applies to all Canadair CL-44D4 and CL-44J airplanes certificated in any category. Compliance required as indicated, unless previously accomplished.

To prevent failure of the aft attachment lugs on the main landing gear upper forging, P/N 44-87573-2, accomplish the following, unless already accomplished.

A. Within the next 30 days after the effective date of this Airworthiness Directive (AD), and at intervals thereafter not to exceed 2000 hours time-in-service or one year, whichever occurs first:

1. Remove the parts shown in Figure 1 of Canadair Service Information Circular (SIC) No. 419-CL44, dated May 18, 1978, from both main landing gear legs: jack attach bracket assemblies, P/N 44-87593; spacers, P/N 44-87639; pins, P/N 44-87725-2; attaching parts, and bushings, P/N 44-87624-2, if necessary.

2. Inspect the bore of the upper and lower jack attachment lugs of the left and right main gear leg upper forgings, P/N 44-87573-2, for cracks, using fluorescent penetrant procedures.

3. Replace cracked parts, prior to further flight, with serviceable parts of the same part number which have been inspected in accordance with the requirements of this AD.

B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the inspections and replacement of parts required by this AD.

D. Upon the request of an operator, an FAA Maintenance Inspector, subject to approval by the Manager, New York Aircraft Certification Office, FAA, New England Region, may adjust the inspection times specified in this AD to permit compliance at an established inspection period of that operator if the request contains substantiating data to justify the change for that operator.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Canadair Limited, Commercial Aircraft Technical Services, Box 6087, Station A, Montreal, Quebec H3C 3G9, Canada. These documents may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Valley Stream, New York.

This Amendment becomes effective September 8, 1986.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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