AD 90-02-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 310 | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310A | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310B | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310C | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310D | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310E | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310F | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310G | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310H | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
| aircraft | Cessna Aircraft Company | 310I | Airworthiness Directives; CESSNA Models 310, 320, 340, 401, 402, 411, 414 and 421 Airplanes |
Unsafe Condition
Cracks in the main gear barrel inner bearing and external lock rings or extended stop spacers could cause jamming of the inner and outer barrels of the main landing gears, leading to loss of structural integrity.
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Required Actions
Inspect the left and right main gear strut barrel inner bearings (Part Numbers 5041108-1 and 5041108-2) for cracks by removing the lower barrel and axle assemblies, cleaning components, visually inspecting for cracks, and performing magnetic particle inspection per Cessna Service Bulletin MEB88-7. Replace cracked external lock rings or extended stop spacers with serviceable parts and replace cracked inner bearings with Part Number 5141109-1. The 1,000-hour repetitive inspections are waived if P/N 5141109-1 bearings are installed.
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Compliance Time
Within 300 hours time-in-service after the effective date (February 5, 1990) or upon reaching 1,300 hours time-in-service, whichever occurs later, and thereafter every 1,000 hours time-in-service unless replaced with P/N 5141109-1 bearings.
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Affected Aircraft
Cessna Models 310 (serial 310L0001-310R1690), 320 (320E0001-320F0045), 340 (340-0001-340A0801), 401 (401-0001-401B0221), 402 (402-0001-402C0125), 411 (411-0001-411A0300), 414 (414-0001-414A0340), and 421 (421-0001-421C0715).
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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