AD 56-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 240 Series | CONVAIR Models 240 and 340 Aircraft |
| aircraft | Kelowna Flightcraft R & D Ltd. | 340 | CONVAIR Models 240 and 340 Aircraft |
Unsafe Condition
A recent accident involving a nacelle fire highlighted the need for additional fire protection in the wheel well area (zone 3), specifically addressing aluminum alloy fuel supply lines, flexible hose assemblies, propeller pump suction lines, oil hose assemblies, and micarta pulleys which could contribute to fire hazards.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace aluminum alloy engine fuel supply lines, sleeves, nuts, and tube unions with steel lines in the wheel well area (zone 3). Replace flexible hose assemblies with steel tubing or fireproof flexible lines. Replace aluminum alloy propeller pump suction lines with steel lines. Protect oil hose assemblies with asbestos sleeves or equivalent. Replace micarta pulleys with aluminum alloy pulleys.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Not later than February 1, 1957, for Model 240 and August 1, 1957, for Model 340.
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Affected Aircraft
CONVAIR Models 240 and 340 Aircraft, all serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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