AD 78-26-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-38-112 | Airworthiness Directives; Piper Model PA-38-112 Aircraft |
Unsafe Condition
A crack in the vertical fin forward spar attachment plate P/N 77553-5 could cause possible hazards in flight.
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Required Actions
Inspect the forward bend radius of the vertical fin forward spar attachment plate P/N 77553-5 using dye penetrant inspection. If a crack is found, replace with an undamaged part of the same part number before further flight, except ferry flights with FAA approval.
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Compliance Time
within the next five hours in service
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Affected Aircraft
Piper Model PA-38-112, Serial Numbers 38-78A0001 thru 38-78A0652, 38-78A0653, 38-78A0655, 38-78A0656, 38-78A0658, 38-78A0660, 38-78A0661, 38-78A0664 thru 38-78A0672, 38-78A0674, 38-78A0676, 38-78A0677, 38-78A0680 thru 38-78A0682, 38-78A0686, 38-78A0690, 38-78A0693, 38-78A0701, 38-78A0702, 38-78A0708, 38-78A0711, 38-78A0717, 38-78A0723, 38-78A0729, 38-78A0734 and 38-78A0749.
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Federal Register Abstract
Vertical Fin Attachment Plate
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-26-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-26-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-38-112 Aircraft Subject: Vertical Fin Attachment Plate Status: Current Citation: This information is not available. Citation Publish Date: 12/26/1978 Effective Date: 12/26/1978 Make: Piper Aircraft Inc. Model: PA-38-112 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-26-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3378 AD NUMBER: 78-26-06 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-38-112 Aircraft ACTION: SUMMARY: DATES: Effective December 26, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-26-06 PIPER: Amendment 39-3378. Applies to Model PA-38-112, Serial Numbers 38-78A0001 thru 38-78A0652, 38-78A0653, 38-78A0655, 38-78A0656, 38-78A0658, 38- 78A0660, 38-78A0661, 38-78A0664 thru 38-78A0672, 38-78A0674, 38-78A0676, 38-78A0677, 38-78A0680 thru 38-78A0682, 38-78A0686, 38-78A0690, 38-78A0693, 38-78A0701, 38-78A0702, 38-78A0708, 38-78A0711, 38-78A0717, 38-78A0723, 38-78A0729, 38-78A0734 and 38-78A0749 certificated in all categories. To avoid possible hazards in flight associated with a crack in the vertical fin forward spar attachment plate accomplish the following within the next five hours in service unless previously accomplished. a. Remove the dorsal fin fairing P/N 77607-02 and inspect the forward bend radius of the vertical fin forward spar attachment plate P/N 77553-5 for cracks using a dye penetrant inspection method. b. If a cracked plate is found, replace with an undamaged part of the same part number before further flight, except a ferry flight to a place of repair may be authorized in accordance with FAR 21.197 with prior approval of the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region. (Piper Service Bulletin No. 628A refers to this same subject.) This amendment is effective December 26, 1978. FOOTER:
Document Text
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AD Final Rules - DRS_78-26-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-26-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Model PA-38-112 Aircraft Subject: Vertical Fin Attachment Plate Status: Current Citation: This information is not available. Citation Publish Date: 12/26/1978 Effective Date: 12/26/1978 Make: Piper Aircraft Inc. Model: PA-38-112 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 78-26-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3378 AD NUMBER: 78-26-06 SUBJECT HEADING: Airworthiness Directives; Piper Model PA-38-112 Aircraft ACTION: SUMMARY: DATES: Effective December 26, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-26-06 PIPER: Amendment 39-3378. Applies to Model PA-38-112, Serial Numbers 38-78A0001 thru 38-78A0652, 38-78A0653, 38-78A0655, 38-78A0656, 38-78A0658, 38- 78A0660, 38-78A0661, 38-78A0664 thru 38-78A0672, 38-78A0674, 38-78A0676, 38-78A0677, 38-78A0680 thru 38-78A0682, 38-78A0686, 38-78A0690, 38-78A0693, 38-78A0701, 38-78A0702, 38-78A0708, 38-78A0711, 38-78A0717, 38-78A0723, 38-78A0729, 38-78A0734 and 38-78A0749 certificated in all categories. To avoid possible hazards in flight associated with a crack in the vertical fin forward spar attachment plate accomplish the following within the next five hours in service unless previously accomplished. a. Remove the dorsal fin fairing P/N 77607-02 and inspect the forward bend radius of the vertical fin forward spar attachment plate P/N 77553-5 for cracks using a dye penetrant inspection method. b. If a cracked plate is found, replace with an undamaged part of the same part number before further flight, except a ferry flight to a place of repair may be authorized in accordance with FAR 21.197 with prior approval of the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region. (Piper Service Bulletin No. 628A refers to this same subject.) This amendment is effective December 26, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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