AD 71-18-02

final rule

MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers

AD Number
71-18-02
Status
final_rule
Effective Date
Product Category
propeller
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft McCauley Propeller Systems 2AF34C55 MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers
propeller McCauley Propeller Systems 2AF34C55 MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers

Unsafe Condition

Counterweight assembly failures

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

Required Actions

Propellers must be modified in accordance with McCauley Service Bulletin Nos. 93 dated 21 April 1971 and 93-1 dated 30 June 1971 or later FAA approved revision or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Eastern Region.

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

Compliance Time

Within the next 100 hours time in service for propellers with 750 hours or more time in service as of 08/31/1971; prior to the accumulation of 850 hours in service for propellers with less than 750 hours in service as of 08/31/1971

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

Affected Aircraft

McCauley Propeller Systems Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N propellers

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

Federal Register Abstract

Counterweight Assembly

Applicability Source Text

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AD Number:
71-18-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers
Subject:
Counterweight Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/31/1971
Make:
McCauley Propeller Systems
Model:
2AF34C55
Product Type:
Propeller
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 71-18-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1274

AD NUMBER:   71-18-02

SUBJECT HEADING:   MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers

ACTION:  

SUMMARY:  

DATES:   Effective August 31, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
71-18-02 MCCAULEY: Amdt. 39-1274. Applies to Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N propellers.

Compliance required as indicated, unless already accomplished.

To prevent propeller counterweight assembly failures accomplish the following:

(a) Propellers with 750 hours or more time in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) within the next 100 hours time in service.

(b) Propellers with less than 750 hours in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) prior to the accumulation of 850 hours in service.

(c) Modify propeller counterweight assembly in accordance with McCauley Service Bulletin Nos. 93 dated 21 April 1971 and 93-1 dated 30 June 1971 or later FAA approved revision or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Eastern Region.

NOTE: McCauley Service Bulletin 93-2 lists serial numbers of 2AF34C55N propeller hub assemblies which were in compliance with this airworthiness directive when shipped from the manufacturer.

This amendment is effective August 31, 1971.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_71-18-02.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
71-18-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers
Subject:
Counterweight Assembly
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/31/1971
Make:
McCauley Propeller Systems
Model:
2AF34C55
Product Type:
Propeller
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 71-18-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1274

AD NUMBER:   71-18-02

SUBJECT HEADING:   MCCAULEY Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N Propellers

ACTION:  

SUMMARY:  

DATES:   Effective August 31, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
71-18-02 MCCAULEY: Amdt. 39-1274. Applies to Model 2AF34C55, 2AF34C55-A, B, C, D, E, F, G, H, HM, J, JM, K, KM, L, LM, M and N propellers.

Compliance required as indicated, unless already accomplished.

To prevent propeller counterweight assembly failures accomplish the following:

(a) Propellers with 750 hours or more time in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) within the next 100 hours time in service.

(b) Propellers with less than 750 hours in service as of the effective date of this airworthiness directive must be modified in accordance with paragraph (c) prior to the accumulation of 850 hours in service.

(c) Modify propeller counterweight assembly in accordance with McCauley Service Bulletin Nos. 93 dated 21 April 1971 and 93-1 dated 30 June 1971 or later FAA approved revision or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, Eastern Region.

NOTE: McCauley Service Bulletin 93-2 lists serial numbers of 2AF34C55N propeller hub assemblies which were in compliance with this airworthiness directive when shipped from the manufacturer.

This amendment is effective August 31, 1971.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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