AD 50-47-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Superior Aircraft Company | V | Airworthiness Directives; Culver Models V and V2 Aircraft |
| aircraft | Superior Aircraft Company | V-2 | Airworthiness Directives; Culver Models V and V2 Aircraft |
Unsafe Condition
Broken blade lag screws and cracked blade shanks and ferrules due to excessive vibratory stresses from operation beyond allowable engine rpm ratings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace C276A2 blades with PC276A6, PC276A7, or C276A6 models by January 31, 1951. Inspect blades every 500 hours of operation for cracks in wood shank and split retaining ring groove, check-tighten lag screws to 160 inch-pounds torque, and magnetically inspect ferrule and hub ferrous parts. Ensure tachometer accuracy to avoid operation beyond 1,800-2,000 rpm with extended nose landing gear.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to January 31, 1951
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Culver Models V and V2 aircraft equipped with Sensenich Models C2FB3 or C2FB1 propellers with C276A2, PC276A6, PC276A7, or C276A6 blades.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.