AD 2011-15-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna | Various | Airworthiness Directives; Cessna Aircraft Company (Cessna) Models 337, 337A (USAF 02B), 337B, 337C, 337D, 337E, T337E, 337F, T337F, 337G, T337G, M337B, F 337E, FT337E, F 337F, FT337F, F 337G, and FT337GP Airplanes |
Unsafe Condition
Damage in the wings or overload failure of the wing due to the installation of Flint Aero, Inc. wing tip auxiliary fuel tanks, STC SA5090NM, could result in structural failure of the wing, which could result in loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the wings for internal and external damage at specified wing stations, repair any damage, reinforce the wings, install operational limitation placards in the cockpit, and add limitations to the airplane flight manual supplement.
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Compliance Time
Within 50 hours time-in-service (TIS) after September 6, 2011, or within 30 days after September 6, 2011, whichever occurs first.
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Affected Aircraft
Cessna Aircraft Company Models 337, 337A (USAF 02B), 337B, 337C, 337D, 337E, T337E, 337F, T337F, 337G, T337G, M337B, F 337E, FT337E, F 337F, FT337F, F 337G, and FT337GP airplanes, all serial numbers, that are or have ever been modified by Flint Aero, Inc. Supplemental Type Certificate (STC) SA5090NM.
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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