AD 51-03-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mooney Mite Aircraft Corporation | M-18C | Airworthiness Directives; Mooney Model M-18 Series Aircraft |
| aircraft | Mooney Mite Aircraft Corporation | M-18C 55 | Airworthiness Directives; Mooney Model M-18 Series Aircraft |
| aircraft | Mooney Mite Aircraft Corporation | M-18L | Airworthiness Directives; Mooney Model M-18 Series Aircraft |
| aircraft | Mooney Mite Aircraft Corporation | M-18LA | Airworthiness Directives; Mooney Model M-18 Series Aircraft |
Unsafe Condition
Failures of the fuel line due to vibration and relative motion between the fuel tank and the fuel shutoff valve.
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Required Actions
Cut the fuel line approximately 4 inches from the fuel tank outlet and install a 4-inch length of 3/8-inch ID approved aromatic resistant flexible hose and hose clamps at this point.
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Compliance Time
March 15, 1951
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Affected Aircraft
Mooney Model M-18 Series Aircraft, Serial Numbers 1 Through 82 and 201 Through 236.
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Federal Register Abstract
Fuel Line Rework
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_51-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M-18 Series Aircraft Subject: Fuel Line Rework Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Mooney Mite Aircraft Corporation Model: M-18C | M-18C 55 | M-18L | M-18LA Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 51-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-03-01 SUBJECT HEADING: Airworthiness Directives; Mooney Model M-18 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-03-01 MOONEY: Applies to Model M-18 Series Aircraft, Serial Numbers 1 Through 82 and 201 Through 236. Compliance required not later than March 15, 1951. There have been reported failures of the fuel line due to vibration and relative motion between the fuel tank and the fuel shutoff valve. To preclude the possibility of recurrence of this type failure, cut the fuel line at a point approximately 4 inches from the fuel tank outlet and install a 4-inch length of 3/8-inch ID approved aromatic resistant flexible hose and hose clamps at this point. (Mooney Service Bulletin No. 6 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_51-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 51-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M-18 Series Aircraft Subject: Fuel Line Rework Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Mooney Mite Aircraft Corporation Model: M-18C | M-18C 55 | M-18L | M-18LA 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: AIRWORTHINESS DIRECTIVES FINAL RULES: 51-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 51-03-01 SUBJECT HEADING: Airworthiness Directives; Mooney Model M-18 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 51-03-01 MOONEY: Applies to Model M-18 Series Aircraft, Serial Numbers 1 Through 82 and 201 Through 236. Compliance required not later than March 15, 1951. There have been reported failures of the fuel line due to vibration and relative motion between the fuel tank and the fuel shutoff valve. To preclude the possibility of recurrence of this type failure, cut the fuel line at a point approximately 4 inches from the fuel tank outlet and install a 4-inch length of 3/8-inch ID approved aromatic resistant flexible hose and hose clamps at this point. (Mooney Service Bulletin No. 6 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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