AD 72-14-08 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 310 | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310A | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310B | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310C | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310D | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310E | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310F | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310G | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310H | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
| aircraft | Cessna Aircraft Company | 310I | Airworthiness Directives; CESSNA Models 310, 320, 401, 402, 411 and 421 Series Airplanes |
Unsafe Condition
Flexible fuel and oil hose assemblies in the engine compartment may exhibit leakage, deterioration, or damage such as cracks, cuts, bulges, discoloration, hardness, chafing, and excessive wear due to time-in-service.
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Required Actions
Inspect flexible fuel and oil hose assemblies in the engine compartment visually or by FAA-approved methods for leakage and deterioration/damage. Replace any deteriorated or damaged hose assemblies prior to further flight. Exclude airplanes with improved hose assemblies as specified.
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Compliance Time
On airplanes having 200 hours or more time-in-service and thereafter at intervals not to exceed 60 hours time-in-service.
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Affected Aircraft
Cessna Models 310, 320, 401, 402, 411, and 421 series airplanes except those with improved hose assemblies (Model 310R serial 310R0001+, 402C0001+, 421C0001+) or those upgraded per Cessna Service Information Letter ME81-17.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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