AD 78-01-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
Unsafe Condition
Adverse stability or handling qualities due to incorrect tension in the elevator bungee spring.
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Required Actions
Inspect the elevator bungee spring for correct tension (30 lb. ±1 lb. for PA-31, 37 lb. ±1 lb. for PA-31-325 and PA-31-350). If tension is incorrect, alter the link per Piper Service Bulletin No. 549 or equivalent approved by the FAA. Submit substantiating data through an FAA Maintenance Inspector for compliance time adjustment.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours in service after the effective date of this Airworthiness Directive unless already accomplished
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Affected Aircraft
Piper Models PA-31 (serial nos. 31-7612001-080, 31-7612082-091, 31-7612096, 31-7612099, 31-7612101-102, 31-7612104-105, 31-7612107-108), PA-31-325 (same serial ranges as PA-31), and PA-31-350 (serial nos. 31-7652001-015, 31-7652017-162, 31-7652164-170)
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Federal Register Abstract
Elevator Bungee
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-01-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-01-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes Subject: Elevator Bungee Status: Current Citation: This information is not available. Citation Publish Date: 01/03/1978 Effective Date: 01/03/1978 Make: Piper Aircraft Inc. Model: PA-31 | PA-31-325 | PA-31-350 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 78-01-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3107 AD NUMBER: 78-01-02 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes ACTION: SUMMARY: DATES: Effective January 3, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-01-02 PIPER: Amendment 39-3107. Applies to Piper Models PA-31 and PA-31-325 Serial Nos. 31-7612001 thru 31-7612080, 31-7612082 thru 31-7612091, 31-7612096, 31-7612099, 31-7612101, 31-7612102, 31-7612104, 31-7612105, 31-7612107 and 31-7612108, PA-31-350 Serial Nos. 31-7652001 thru 31-7652015, 31-7652017 thru 31-7652162, and 31-7652164 thru 31-7652170 certificated in all categories. To prevent adverse stability or handling qualities due to incorrect tension in the elevator bungee, accomplish the following within the next 25 hours in service after the effective date of this Airworthiness Directive unless already accomplished. (a) Inspect the elevator bungee spring for correct tension, (30 lb. + 1 lb. for model PA-31 and 37 lb. + 1, -0 for models PA-31-325 and PA-31-350). (b) If the tension is not correct, before further flight alter the link in accordance with the "Instructions" section of Piper Service Bulletin No. 549 dated February 16, 1977, or equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (c) Upon submission of substantiating data through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the compliance time specified above. This amendment is effective January 3, 1978. FOOTER:
Document Text
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AD Final Rules - DRS_78-01-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-01-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes Subject: Elevator Bungee Status: Current Citation: This information is not available. Citation Publish Date: 01/03/1978 Effective Date: 01/03/1978 Make: Piper Aircraft Inc. Model: PA-31 | PA-31-325 | PA-31-350 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: 78-01-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3107 AD NUMBER: 78-01-02 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes ACTION: SUMMARY: DATES: Effective January 3, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-01-02 PIPER: Amendment 39-3107. Applies to Piper Models PA-31 and PA-31-325 Serial Nos. 31-7612001 thru 31-7612080, 31-7612082 thru 31-7612091, 31-7612096, 31-7612099, 31-7612101, 31-7612102, 31-7612104, 31-7612105, 31-7612107 and 31-7612108, PA-31-350 Serial Nos. 31-7652001 thru 31-7652015, 31-7652017 thru 31-7652162, and 31-7652164 thru 31-7652170 certificated in all categories. To prevent adverse stability or handling qualities due to incorrect tension in the elevator bungee, accomplish the following within the next 25 hours in service after the effective date of this Airworthiness Directive unless already accomplished. (a) Inspect the elevator bungee spring for correct tension, (30 lb. + 1 lb. for model PA-31 and 37 lb. + 1, -0 for models PA-31-325 and PA-31-350). (b) If the tension is not correct, before further flight alter the link in accordance with the "Instructions" section of Piper Service Bulletin No. 549 dated February 16, 1977, or equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. (c) Upon submission of substantiating data through an FAA Maintenance Inspector, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the compliance time specified above. This amendment is effective January 3, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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