AD 88-03-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 340 | Airworthiness Directives; Cessna Models 340, 340A and 414 Airplanes |
| aircraft | Cessna Aircraft Company | 340A | Airworthiness Directives; Cessna Models 340, 340A and 414 Airplanes |
| aircraft | Cessna Aircraft Company | 414 | Airworthiness Directives; Cessna Models 340, 340A and 414 Airplanes |
Unsafe Condition
Fuel line chafing or fuel leaks behind the engine firewall could lead to fuel system failure.
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Required Actions
Inspect crossfed fuel lines for chafing per Cessna Service Bulletin MEB87-7, revise firewall stiffener flanges and fuel lines as per the same bulletin, and replace affected lines with airworthy parts if chafing exceeds criteria.
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Compliance Time
within the next 50 hours time-in-service after the effective date of this AD
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Affected Aircraft
Cessna Models 340 (Serial Numbers 340-0001 thru 340A1817), 340A (Serial Numbers 340-0001 thru 340A1817), and 414 (Serial Numbers 414-0001 thru 414-0965)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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