AD 46-14-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fairchild Hiller Corporation | M-62A-3 | Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft |
| aircraft | Fairchild Hiller Corporation | M-62A-4 | Airworthiness Directives; FAIRCHILD Models M- 62A3 and M-62A4 Aircraft |
Unsafe Condition
The aluminum alloy cockpit heat control valve box and valve may fail due to corrosion or structural weakness, leading to potential fire hazards or loss of cockpit heating functionality.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the aluminum alloy cockpit heat control valve box and valve with ferrous metal components at least 0.018-inch thick. Alternatively, remove the valve box and seal the firewall opening with an overlapping ferrous metal sheet secured using existing bolts and nuts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required immediately.
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Affected Aircraft
Fairchild Hiller Corporation Models M-62A3 and M-62A4 Aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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