AD 76-22-04

final rule

Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes

AD Number
76-22-04
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 Mitsubishi Heavy Industries, Ltd. MU-2B-30 Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes
aircraft Mitsubishi Heavy Industries, Ltd. MU-2B-35 Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes

Unsafe Condition

Binding of the main landing gear forward door emergency operating cables could result in inability to manually extend the landing gear.

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

Required Actions

Inspect the main landing gear forward door emergency operating cables within 50 hours time in service after the effective date, and every 100 hours thereafter. Replace cables if actuating force exceeds 88 lbs, rewinding requires heavy force, rewinding is rough, or inner coating is scraped. Install new cables P/N 030A-38558-41 and -51 to discontinue inspections.

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, and thereafter at intervals not to exceed 100 hours time in service from the last inspection

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

Affected Aircraft

Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 (serial numbers 502 through 547) and Model MU-2B-35 (serial numbers 501 and 548 through 615)

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

Federal Register Abstract

Main Landing Gear

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_76-22-04.html
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AD Number:
76-22-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes
Subject:
Main Landing Gear
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/15/1976
Make:
Mitsubishi Heavy Industries, Ltd.
Model:
MU-2B-30 | MU-2B-35
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: 76-22-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2757

AD NUMBER:   76-22-04

SUBJECT HEADING:   Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective November 15, 1976.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   76-22-04 MITSUBISHI HEAVY INDUSTRIES, LIMITED: Amendment 39-2757. Applies to Model MU-2B-30 airplanes with serial numbers 502 through 547 and Model MU-2B- 35 airplanes with serial numbers 501 and 548 through 615, certificated in all categories.
Compliance is required as indicated, unless already accomplished.
To prevent the binding of the main landing gear forward door emergency operating cables and subsequent inability to manually extend the landing gear, accomplish the following:
(a) Within the next 50 hours time in service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours time in service from the last inspection, inspect the main landing gear forward door emergency operating cables in accordance with the instructions section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975 or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA Pacific-Asia Region, Honolulu, Hawaii.
(b) If, during an inspection required by paragraph (a) of this AD, the cable actuating force is found to exceed 88 lbs, the cable rewinding requires unusually heavy force, the cable rewinding is rough, or the inner cable coating is scraped, replace the cable with another cable of the same part number in accordance with the replacement section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975, or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region, Honolulu, Hawaii, and thereafter continue to comply with paragraphs (a) and (b) of this AD.
(c) The repetitive inspections required by this AD may be discontinued upon the installation of the newly designed cables, P/N 030A-38558-41 left hand and P/N 030A-38558-51 right hand in accordance with the replacement section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975, or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region, Honolulu, Hawaii.
This amendment becomes effective November 15, 1976.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_76-22-04.html
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Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
76-22-04
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes
Subject:
Main Landing Gear
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/15/1976
Make:
Mitsubishi Heavy Industries, Ltd.
Model:
MU-2B-30 | MU-2B-35
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: 76-22-04
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-2757

AD NUMBER:   76-22-04

SUBJECT HEADING:   Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. Model MU-2B-30 and Model MU-2B-35 Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective November 15, 1976.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   76-22-04 MITSUBISHI HEAVY INDUSTRIES, LIMITED: Amendment 39-2757. Applies to Model MU-2B-30 airplanes with serial numbers 502 through 547 and Model MU-2B- 35 airplanes with serial numbers 501 and 548 through 615, certificated in all categories.
Compliance is required as indicated, unless already accomplished.
To prevent the binding of the main landing gear forward door emergency operating cables and subsequent inability to manually extend the landing gear, accomplish the following:
(a) Within the next 50 hours time in service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours time in service from the last inspection, inspect the main landing gear forward door emergency operating cables in accordance with the instructions section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975 or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA Pacific-Asia Region, Honolulu, Hawaii.
(b) If, during an inspection required by paragraph (a) of this AD, the cable actuating force is found to exceed 88 lbs, the cable rewinding requires unusually heavy force, the cable rewinding is rough, or the inner cable coating is scraped, replace the cable with another cable of the same part number in accordance with the replacement section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975, or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region, Honolulu, Hawaii, and thereafter continue to comply with paragraphs (a) and (b) of this AD.
(c) The repetitive inspections required by this AD may be discontinued upon the installation of the newly designed cables, P/N 030A-38558-41 left hand and P/N 030A-38558-51 right hand in accordance with the replacement section contained in Mitsubishi Service Bulletin No. 170 dated May 16, 1975, or an equivalent approved by the Chief, Engineering and Manufacturing District Office, FAA, Pacific-Asia Region, Honolulu, Hawaii.
This amendment becomes effective November 15, 1976.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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