AD 61-26-01

final rule

Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes

AD Number
61-26-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
Federal Register: December 15, 1961

Applicability

TypeManufacturerModelDetails
aircraft Textron Aviation Inc. A45 (Military T-34A, B-45) Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes

Unsafe Condition

Deteriorated flexible oil pickup hoses within the engine oil tank can allow air into the engine oil supply line, causing serious engine and propeller overspeeds due to improper propeller governing or engine damage from inadequate lubrication.

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

Required Actions

Visually inspect the flexible oil pickup hose for deterioration by removing the oil tank inspection plate, disconnecting the hose at its upper end, and examining the corrugations for cracks or checks. Replace deteriorated hoses. Install rigid oil pickup lines (Beech Kit 45-327 or equivalent) to eliminate further special inspections, and ensure FAA-approved AFM Supplement dated August 14, 1961, is onboard for inverted flight prohibition.

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

Compliance Time

within the next 25 hours' time in service after the effective date of this directive unless already accomplished within the last 100 hours' time in service and at intervals of not more than 100 hours' time in service

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

Affected Aircraft

Beech Model A45 (Converted T34A) airplanes

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

Federal Register Abstract

Oil Pickup Hoses

Applicability Source Text

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Details
AD Number:
61-26-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes
Subject:
Oil Pickup Hoses
Status:
Current
Citation:
Federal Register: December 15, 1961
Citation Publish Date:
12/15/1961
Effective Date:
01/16/1962
Make:
Textron Aviation Inc.
Model:
A45 (Military T-34A, B-45)
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Superseded AD: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Superseded By: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: 61-26-01
CITATION:   [Federal Register: December 15, 1961]

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   61-26-01

SUBJECT HEADING:   Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective January 16, 1962

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
61-26-01 BEECH: Amdt. 377 Part 507 Federal Register December 15, 1961. Applies to All Model A45 (Converted T34A) Airplanes.

Compliance required as indicated.

Deteriorated flexible oil pickup hoses located within the engine oil tank will allow air to be drawn into the engine oil supply line. This can cause serious engine and propeller overspeeds due to improper propeller governing or engine damage from inadequate lubrication. To preclude such occurrences, the following inspection is required within the next 25 hours' time in service after the effective date of this directive unless already accomplished within the last 100 hours' time in service and at intervals of not more than 100 hours' time in service. Visually inspect the flexible oil pickup hose for condition. This will require removal of the oil tank inspection plate, disconnection of the pickup hose at its upper end and removal of the hose from the oil tank for inspection. Examine the hose for deterioration with close attention directed to the hose corrugations for cracks or checks in the minimum diameter sections. Deteriorated or defective hoses are to be replaced.

If new flexible hoses are installed, the 100-hour inspections must be continued. If a rigid type oil pickup line (Beech Kit 45-327 or equivalent) is installed so as to properly supply oil from the bottom of the tank, no further special inspections are required. FAA approved Airplane Flight Manual Supplement dated August 14, 1961, prohibiting inverted flight maneuvers, is required with the rigid type oil pickup line.

(Beech Service Letter T34A, No. 3 dated September 1961, covers this same subject.)

This directive effective January 16, 1962.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_61-26-01.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
61-26-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes
Subject:
Oil Pickup Hoses
Status:
Current
Citation:
Federal Register: December 15, 1961
Citation Publish Date:
12/15/1961
Effective Date:
01/16/1962
Make:
Textron Aviation Inc.
Model:
A45 (Military T-34A, B-45)
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: 61-26-01
CITATION:   [Federal Register: December 15, 1961]

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:  

AD NUMBER:   61-26-01

SUBJECT HEADING:   Airworthiness Directives; Beech Model A45 (Converted T34A) Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective January 16, 1962

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
61-26-01 BEECH: Amdt. 377 Part 507 Federal Register December 15, 1961. Applies to All Model A45 (Converted T34A) Airplanes.

Compliance required as indicated.

Deteriorated flexible oil pickup hoses located within the engine oil tank will allow air to be drawn into the engine oil supply line. This can cause serious engine and propeller overspeeds due to improper propeller governing or engine damage from inadequate lubrication. To preclude such occurrences, the following inspection is required within the next 25 hours' time in service after the effective date of this directive unless already accomplished within the last 100 hours' time in service and at intervals of not more than 100 hours' time in service. Visually inspect the flexible oil pickup hose for condition. This will require removal of the oil tank inspection plate, disconnection of the pickup hose at its upper end and removal of the hose from the oil tank for inspection. Examine the hose for deterioration with close attention directed to the hose corrugations for cracks or checks in the minimum diameter sections. Deteriorated or defective hoses are to be replaced.

If new flexible hoses are installed, the 100-hour inspections must be continued. If a rigid type oil pickup line (Beech Kit 45-327 or equivalent) is installed so as to properly supply oil from the bottom of the tank, no further special inspections are required. FAA approved Airplane Flight Manual Supplement dated August 14, 1961, prohibiting inverted flight maneuvers, is required with the rigid type oil pickup line.

(Beech Service Letter T34A, No. 3 dated September 1961, covers this same subject.)

This directive effective January 16, 1962.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.