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FAA
Federal Aviation Administration Department of Transportation
Aviation Safety
AIRWORTHINESS DIRECTIVE
Generated by Aircraft-logs.com — March 22, 2026

AD 51-03-01 ACTIVE

Fuel Line Rework
Key Information
AD Number 51-03-01 Status Active
Effective Date Not specified Issue Date Not specified
Docket Number Unknown Amendment N/A
Product Type ["Aircraft"] Product Subtype ["Small Airplane"]
CFR Part --- - Part 39 CFR Section N/A
Citation This information is not available.
Applicability
Manufacturer(s) Mooney Mite Aircraft Corporation
Model(s) M-18C M-18C 55 M-18L M-18LA
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.)

AD 51-03-01 — Fuel Line Rework
Printed from Aircraft-logs.com — 03/22/2026