AD 75-11-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maule Aerospace Technology, Inc. | M-4-210 | Airworthiness Directives; Maule Models M-4-210, M-4-210C, and M-5-210C |
| aircraft | Maule Aerospace Technology, Inc. | M-4-210C | Airworthiness Directives; Maule Models M-4-210, M-4-210C, and M-5-210C |
| aircraft | Maule Aerospace Technology, Inc. | M-5-210C | Airworthiness Directives; Maule Models M-4-210, M-4-210C, and M-5-210C |
Unsafe Condition
Fuel leakage in the cabin area and reduced fuel line flexibility due to cracking around flares on the short line and inadequate design of the long line.
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Required Actions
Inspect the short line connected at the firewall to the check valve for cracking around the flares and replace if necessary. Remove the existing long line and install an 8-inch long, 1/4 inch diameter aluminum tube with a 1.5 to 2.0 inch diameter loop installed horizontally. Reinstall the check valve with the arrow pointing aft, and perform a functional check for leaks.
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Compliance Time
within the next 30 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Maule Models M-4-210 serial numbers 1001 through 1045; M-4-210C serial numbers 1001C through 1117C; M-5-210C serial numbers 6001C through 6069C, 6072C, 6076C, 6077C, 6079C, 6080C, 6084C, and 6087C
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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