AD 56-27-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 340 | CONVAIR Models 340 and 440 Aircraft |
| aircraft | Kelowna Flightcraft R & D Ltd. | 440 | CONVAIR Models 340 and 440 Aircraft |
Unsafe Condition
Failure of the elevator servo tab rod due to loose rivets attaching rod ends to rods and relative movement between rod and rod ends, leading to serious flutter condition and critical accident risk.
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Required Actions
Inspect tab rods and rod ends for loose rivets and relative movement; replace defective parts. Replace elevator tab rods and rod ends with improved heavier versions for Models 340 and 440, and install symmetrical idler link on Model 340 right-hand elevator tab.
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Compliance Time
Compliance required at every 110 hours of operation or regular scheduled inspection closest thereto, not later than November 30, 1957.
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Affected Aircraft
CONVAIR Models 340 and 440 Aircraft, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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