AD 62-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Twin Commander Aircraft LLC | 680-F | Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft |
| aircraft | Twin Commander Aircraft LLC | 720 | Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft |
Unsafe Condition
Fuel and fuel fumes are released within the cockpit area behind the instrument panel through the fuel pressure gage case vent as a result of gage diaphragm rupture.
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Required Actions
Install a fuel drain line leading from the fuel pressure gage vent connection and route it overboard through the belly of the aircraft in accordance with Aero Commander Service Bulletin No. 78 or an FAA approved equivalent.
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Compliance Time
within the next 25 hours' time in service after the effective date of this directive
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Affected Aircraft
Aero Commander Model 720 and 680F aircraft with serial numbers 1 through 1170, except serial numbers 1133, 1153, 1156, 1162, models 720, and pressurized versions of Model 680F.
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Federal Register Abstract
Fuel Pressure Gauge Drain Line
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_62-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft Subject: Fuel Pressure Gauge Drain Line Status: Current Citation: Federal Register: April 10, 1962 Citation Publish Date: 04/10/1962 Effective Date: 04/10/1962 Make: Twin Commander Aircraft LLC Model: 680-F | 720 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 62-08-01 CITATION: [Federal Register: April 10, 1962] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-08-01 SUBJECT HEADING: Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft ACTION: SUMMARY: DATES: Effective April 10, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-08-01 AERO COMMANDER: Amdt. 415 Part 507 Federal Register April 10, 1962. Applies to All Models With Serial Numbers 1 Through 1170, Except Serial Numbers 1133, 1153, 1156, 1162, Models 720, and Pressurized Versions of Model 680F. Compliance required within the next 25 hours' time in service after the effective date of this directive. It has been found that fuel and fuel fumes are released within the cockpit area behind the instrument panel, through the fuel pressure gage case vent as a result of gage diaphragm rupture. Accordingly, a fuel drain line shall be installed leading from the fuel pressure gage vent connection and routed overboard through the belly of the aircraft in accordance with Aero Commander Service Bulletin No. 78 dated March 16, 1962, or an FAA approved equivalent. This directive effective April 10, 1962. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_62-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 62-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft Subject: Fuel Pressure Gauge Drain Line Status: Current Citation: Federal Register: April 10, 1962 Citation Publish Date: 04/10/1962 Effective Date: 04/10/1962 Make: Twin Commander Aircraft LLC Model: 680-F | 720 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 62-08-01 CITATION: [Federal Register: April 10, 1962] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 62-08-01 SUBJECT HEADING: Airworthiness Directives; Aero Commander Model 720 and 680F Aircraft ACTION: SUMMARY: DATES: Effective April 10, 1962. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 62-08-01 AERO COMMANDER: Amdt. 415 Part 507 Federal Register April 10, 1962. Applies to All Models With Serial Numbers 1 Through 1170, Except Serial Numbers 1133, 1153, 1156, 1162, Models 720, and Pressurized Versions of Model 680F. Compliance required within the next 25 hours' time in service after the effective date of this directive. It has been found that fuel and fuel fumes are released within the cockpit area behind the instrument panel, through the fuel pressure gage case vent as a result of gage diaphragm rupture. Accordingly, a fuel drain line shall be installed leading from the fuel pressure gage vent connection and routed overboard through the belly of the aircraft in accordance with Aero Commander Service Bulletin No. 78 dated March 16, 1962, or an FAA approved equivalent. This directive effective April 10, 1962. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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