AD Amdt-39-10257
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maule | Models MX-7-420 and MXT-7-420 | Airworthiness Directives; MAULE Models MX-7-420 and MXT-7-420 Airplanes and Models M-7-235 and M-7-235A Airplanes Modified in Accordance With Maule Supplemental Type Certificate (STC) SA2661SO |
Unsafe Condition
Improper utilization of propeller beta during flight leading to power levers positioned below the flight idle stop, causing loss of airplane control or engine overspeed with consequent loss of engine power.
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Required Actions
Amend the Limitations Section of the airplane flight manual (AFM) to prohibit power levers below flight idle stop during flight. Include consequences statement for non-compliance.
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Compliance Time
Before further flight
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Affected Aircraft
MAULE Models MX-7-420, MXT-7-420, M-7-235, and M-7-235A modified under STC SA2661SO with specified gas turbine engine, amphibious floats, and propellers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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