AD 79-19-09
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31T | Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T1 | Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes |
Unsafe Condition
Shorting of the electroluminescent panel inverters creating smoke in the cockpit
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Required Actions
Replace and/or relocate the electroluminescent panel power supply inverter following Piper Service Bulletin No. 640 dated June 22, 1979.
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Compliance Time
Within the next 100 hours in service or at the next scheduled inspection, whichever occurs first
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Affected Aircraft
Piper Models PA-31T1 (Serial Nos. 31T-7804001 to 31T-7904016) and PA-31T (Serial Nos. 31T-7400002 to 31T-7920036)
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Federal Register Abstract
Electroluminescent Panel Inverters
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-19-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-19-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes Subject: Electroluminescent Panel Inverters Status: Current Citation: This information is not available. Citation Publish Date: 09/17/1979 Effective Date: 09/25/1979 Make: Piper Aircraft Inc. Model: PA-31T | PA-31T1 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 79-19-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3560 AD NUMBER: 79-19-09 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes ACTION: SUMMARY: DATES: Effective September 25, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-19-09 PIPER: Amendment 39-3560. Applies to Model PA-31T1, Serial Nos. 31T-7804001 to 31T-7904016 inclusive, and PA-31T, Serial Nos. 31T-7400002 to 31T-7920036, inclusive. To prevent possible hazards in flight caused by a shorting of the electroluminescent panel inverters creating smoke in the cockpit: (a) Within the next 100 hours in service or at the next scheduled inspection, whichever occurs first, comply with the instructions of Piper Service Bulletin No. 640 dated June 22, 1979, for the replacement and/or relocation of the electroluminescent panel power supply inverter. (b) Upon request with substantiating data submitted through an FAA Maintenance Inspector, the compliance time specified in this AD may be adjusted by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. This amendment is effective September 25, 1979. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_79-19-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-19-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes Subject: Electroluminescent Panel Inverters Status: Current Citation: This information is not available. Citation Publish Date: 09/17/1979 Effective Date: 09/25/1979 Make: Piper Aircraft Inc. Model: PA-31T | PA-31T1 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: 79-19-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3560 AD NUMBER: 79-19-09 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-31T1 and PA-31T Airplanes ACTION: SUMMARY: DATES: Effective September 25, 1979. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-19-09 PIPER: Amendment 39-3560. Applies to Model PA-31T1, Serial Nos. 31T-7804001 to 31T-7904016 inclusive, and PA-31T, Serial Nos. 31T-7400002 to 31T-7920036, inclusive. To prevent possible hazards in flight caused by a shorting of the electroluminescent panel inverters creating smoke in the cockpit: (a) Within the next 100 hours in service or at the next scheduled inspection, whichever occurs first, comply with the instructions of Piper Service Bulletin No. 640 dated June 22, 1979, for the replacement and/or relocation of the electroluminescent panel power supply inverter. (b) Upon request with substantiating data submitted through an FAA Maintenance Inspector, the compliance time specified in this AD may be adjusted by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region. This amendment is effective September 25, 1979. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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