AD 78-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-30 | Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-39 | Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes |
Unsafe Condition
The right fuel selector valve with Piper P/N 492137 (Airborne P/N 1H7-8) containing the designation '4C' in the valve serial number may fail, leading to fuel system malfunction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the right fuel selector valve containing '4C' in the serial number with a serviceable valve without the '4C' designation. Install and adjust the replacement valve per PA-30/39 Service Manual.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models PA-30 (Serial Numbers 30-1 through 30-2000) and PA-39 (Serial Numbers 39-1 through 39-155) with a right fuel selector valve P/N 492137 (Airborne P/N 1H7-8) changed since April 1977 with a valve containing '4C' in the serial number.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Selector Valve
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-12-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-12-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes Subject: Fuel Selector Valve Status: Current Citation: This information is not available. Citation Publish Date: 06/15/1978 Effective Date: 06/19/1978 Make: Piper Aircraft Inc. Model: PA-30 | PA-39 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-720: Operational Safety Branch CFR Part Reference: Part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: 78-12-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3235 AD NUMBER: 78-12-07 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes ACTION: SUMMARY: DATES: Effective June 19, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-12-07 PIPER: Amendment 39-3235. Applies to Piper Aircraft PA-30 and PA-39 with Serial Numbers 30-1 through 30-2000 and 39-1 through 39-155 which have had a right fuel selector valve P/N 492137 (Airborne P/N 1H7-8) changed since April, 1977, with a valve containing the designation "4C" in the valve serial number. Compliance required before further flight unless already accomplished. 1. Replace any right fuel selector valve, Piper P/N 492137 (Airborne P/N 1H7-8) containing the designation "4C" in the valve serial number with a serviceable valve without the "4C" designation. 2. The replacement fuel selector valve shall be installed and adjusted in accordance with PA-30/39 Service Manual. (Piper Service Bulletin No. 597 dated April 19, 1978, pertains to this subject.) This amendment is effective June 19, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-12-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-12-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes Subject: Fuel Selector Valve Status: Current Citation: This information is not available. Citation Publish Date: 06/15/1978 Effective Date: 06/19/1978 Make: Piper Aircraft Inc. Model: PA-30 | PA-39 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: 78-12-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3235 AD NUMBER: 78-12-07 SUBJECT HEADING: Airworthiness Directives; Piper Models PA-30 and PA-39 Airplanes ACTION: SUMMARY: DATES: Effective June 19, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-12-07 PIPER: Amendment 39-3235. Applies to Piper Aircraft PA-30 and PA-39 with Serial Numbers 30-1 through 30-2000 and 39-1 through 39-155 which have had a right fuel selector valve P/N 492137 (Airborne P/N 1H7-8) changed since April, 1977, with a valve containing the designation "4C" in the valve serial number. Compliance required before further flight unless already accomplished. 1. Replace any right fuel selector valve, Piper P/N 492137 (Airborne P/N 1H7-8) containing the designation "4C" in the valve serial number with a serviceable valve without the "4C" designation. 2. The replacement fuel selector valve shall be installed and adjusted in accordance with PA-30/39 Service Manual. (Piper Service Bulletin No. 597 dated April 19, 1978, pertains to this subject.) This amendment is effective June 19, 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
2024-14-03
final ruleAirworthiness Directives; Various Airplanes
Unsafe Condition: an un-commanded automatic pitch trim runaway when the autopilot was first engaged, which could result in un-commanded automatic pitch trim runaway and loss of control of the airplane.
2023-09-09 Recurring
final ruleAirworthiness Directives; Various Airplanes, Helicopters, and Engines
Unsafe Condition: Multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange.
2022-03-15
final ruleAirworthiness Directives; Various Airplanes
Unsafe Condition: The displayed fuel quantity can have an error as much as four gallons/fuel tank with the display indicating four gallons with an empty tank. In the context of this event, the end level effect is th...
2017-15-05
final ruleAirworthiness Directives; Piper Aircraft, Inc. Airplanes
Unsafe Condition: The potential of carbon monoxide entering the airplane cabin due to failure of the combustion heater exhaust extension.