AD 51-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-16 | Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-20 | Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-22 | Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft |
Unsafe Condition
Metallic contact between the wing nuts or terminals and the battery box cover could occur, leading to electrical short circuits.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install insulators of sufficient area inside the battery box cover over the battery terminals using hard fiber rubber or phenolic insulating materials with a minimum thickness of 1/16-inch to prevent metallic contact.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
as soon as possible, but not later than October 15, 1951
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Affected Aircraft
Piper Aircraft Inc. Models PA-16 (Serial Numbers 16-1 and up), PA-20 (Serial Numbers 20-1 through 20-802), and PA-22 (Serial Numbers 22-1 through 22-348)
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Federal Register Abstract
Battery Box Insulation
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_51-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft Subject: Battery Box Insulation Status: Current Citation: This information is not available. Citation Publish Date: 12/04/1956 Effective Date: Make: Piper Aircraft Inc. Model: PA-16 | PA-20 | PA-22 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: unable to find issue date AIRWORTHINESS DIRECTIVES FINAL RULES: 51-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-23-03 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-23-03 PIPER: Applies to Model PA-16 Aircraft, Serial Numbers 16-1 and Up; PA-20 Aircraft, Serial Numbers 20-1 Through 20-802; and PA-22 Aircraft, Serial Numbers 22-1 Through 22-348. Compliance required as soon as possible, but not later than October 15, 1951. Install insulators of sufficient area inside the battery box cover over the battery terminals to positively prevent a metallic contact between the wing nuts or terminals and cover. Hard fiber rubber or phenolic insulating materials 1/16-inch minimum thickness may be used. (Piper Service Bulletin No. 118 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_51-23-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-23-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft Subject: Battery Box Insulation Status: Current Citation: This information is not available. Citation Publish Date: 12/04/1956 Effective Date: Make: Piper Aircraft Inc. Model: PA-16 | PA-20 | PA-22 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: unable to find issue date AIRWORTHINESS DIRECTIVES FINAL RULES: 51-23-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-23-03 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-16, PA-20, and PA-22 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-23-03 PIPER: Applies to Model PA-16 Aircraft, Serial Numbers 16-1 and Up; PA-20 Aircraft, Serial Numbers 20-1 Through 20-802; and PA-22 Aircraft, Serial Numbers 22-1 Through 22-348. Compliance required as soon as possible, but not later than October 15, 1951. Install insulators of sufficient area inside the battery box cover over the battery terminals to positively prevent a metallic contact between the wing nuts or terminals and cover. Hard fiber rubber or phenolic insulating materials 1/16-inch minimum thickness may be used. (Piper Service Bulletin No. 118 covers this same subject.) 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.
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