AD 69-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 310 | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310A | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310B | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310C | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310D | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310E | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
| aircraft | Cessna Aircraft Company | 310F | Airworthiness Directives; CESSNA Models 310, 310A, 310B, 310C, 310D, 310E and 310F Airplanes |
Unsafe Condition
Complete loss of engine power due to air being introduced into the fuel system if a fuel crossfeed line becomes chafed through by the firewall stiffener on the aft side of the aircraft firewall.
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Required Actions
Within 25 hours' time-in-service after the effective date, inspect fuel crossfeed lines for chafing at firewall stiffeners, replace chafed lines, and install P/N 0826031-1 fuel line support bracket per Cessna Service Letter 310-66. If the bracket is unavailable, repeat inspections every 100 hours until installed. Install firewall inspection opening per Cessna Service Letter 310-3 for models 35000-35138 before inspection.
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Compliance Time
Within 25 hours' time-in-service after the effective date of this airworthiness directive
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Affected Aircraft
Cessna Models 310 (SN 35000-35546); 310A (SN 38001-38161); 310B (SN 607, 35547-35771); 310C (SN 35550, 35772-35999, 39001-39031); 310D (SN 39032-39299); 310E (SN 35912A, 310M0001-310M0036); 310F (SN 310 0001-310 0156)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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