AD 78-25-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | A150M | Airworthiness Directives; CESSNA Models A150M and A152 Airplanes |
| aircraft | Cessna Aircraft Company | A152 | Airworthiness Directives; CESSNA Models A150M and A152 Airplanes |
Unsafe Condition
The vertical fin attachment brackets (Part Number 0431009-3) may fail due to stress corrosion cracking, compromising structural integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the two existing Part Number 0431009-3 vertical fin attach brackets with new ones from Cessna, return the removed brackets for metallurgical examination, and obtain FAA approval for any equivalent compliance method.
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 AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Models A150M (Serial Numbers A1500654 through A1500734) and A152 (Serial Numbers A1520735 through A1520833)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Vertical Fin Attachment Brackets
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-25-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-25-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Models A150M and A152 Airplanes Subject: Vertical Fin Attachment Brackets Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/22/1978 Make: Cessna Aircraft Company Model: A150M | A152 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-25-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3371 AD NUMBER: 78-25-07 SUBJECT HEADING: Airworthiness Directives; CESSNA Models A150M and A152 Airplanes ACTION: SUMMARY: DATES: Effective December 22, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-25-07 CESSNA: Amendment 39-3371. Applies to Models A150M (Serial Numbers A1500654 through A1500734) and A152 (Serial Numbers A1520735 through A1520833) airplanes. COMPLIANCE: Required as indicated, unless already accomplished. To assure necessary structural integrity of the vertical fin attachment to the airplane, in accordance with the instructions contained in Cessna Single Engine Service Letter SE78-62, dated October 13, 1978, or later revisions, within the next 25 hours time-in-service after the effective date of this AD, accomplish the following: A) Replace the two existing Part Number 0431009-3 vertical fin attach brackets with two new Part Number 0431009-3 attach brackets obtained from Cessna. B) Return the two brackets removed from each airplane to the Cessna factory for metallurgical examination. C) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective December 22, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-25-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-25-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Models A150M and A152 Airplanes Subject: Vertical Fin Attachment Brackets Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/22/1978 Make: Cessna Aircraft Company Model: A150M | A152 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: 78-25-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3371 AD NUMBER: 78-25-07 SUBJECT HEADING: Airworthiness Directives; CESSNA Models A150M and A152 Airplanes ACTION: SUMMARY: DATES: Effective December 22, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-25-07 CESSNA: Amendment 39-3371. Applies to Models A150M (Serial Numbers A1500654 through A1500734) and A152 (Serial Numbers A1520735 through A1520833) airplanes. COMPLIANCE: Required as indicated, unless already accomplished. To assure necessary structural integrity of the vertical fin attachment to the airplane, in accordance with the instructions contained in Cessna Single Engine Service Letter SE78-62, dated October 13, 1978, or later revisions, within the next 25 hours time-in-service after the effective date of this AD, accomplish the following: A) Replace the two existing Part Number 0431009-3 vertical fin attach brackets with two new Part Number 0431009-3 attach brackets obtained from Cessna. B) Return the two brackets removed from each airplane to the Cessna factory for metallurgical examination. C) Any equivalent method of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective December 22, 1978. 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.
Related Airworthiness Directives
2009-10-09 R2
final ruleAirworthiness Directives; Cessna Aircraft Company Airplanes
Unsafe Condition: The unsafe condition involves the potential for rudder control system failure due to insufficient rudder stop clearance, which could result in structural damage or loss of control during maneuvers ...
2011-10-09 Recurring
final ruleAirworthiness Directives; Cessna Aircraft Company Models 150, 152, 170, 172, 175, 177, 180, 182, 185, 188, 190, 195, 206, 207, 210, T303, 336, and 337 Airplanes
Unsafe Condition: Excessive wear on seat rail and seat rail holes, seat pin engagement, seat rollers, washers, axle bolts or bushings, wall thickness of roller housing and the tang, and lock pin springs may lead to ...
2008-22-18
final ruleAirworthiness Directives; Cessna Aircraft Company 150 Series Airplanes
Unsafe Condition: The pick-up collar assembly may prematurely move off the launch tube and adversely affect rocket trajectory during deployment, potentially resulting in the parachute failing to successfully deploy.
2000-06-01
final ruleAirworthiness Directives; Cessna Aircraft Company 150, 152, 172, 177, 180, 182, 185, 188, 206, 207, 210, and 337 Series Airplanes
Unsafe Condition: could result in loss of engine power or complete engine stoppage during flight.