AD 91-12-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 340 | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | 440 | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | Military C-131B | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | Military C-131D | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | Military C-131E | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | Military C-131F/R4Y-1 | Airworthiness Directives; General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) Series Airplanes |
Unsafe Condition
Loss of the elevator hinge pins due to non-conforming dimensions, cracked bearing plate assemblies, or loose, chattering, dry, or seized bearings (P/N AN201KP1A).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service or 60 days after the effective date, remove the elevator and inspect hinge pins and bearings per SB 55-5. Replace non-conforming pins, bushings, or tapered bushings; replace cracked bearing plates, loose/chattering/dry/seized bearings. Ensure proper mating of tapered bushing and pin surfaces during reinstallation; rework pins if needed per SB 55-5.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 hours time-in-service or 60 days after the effective date of this AD, whichever occurs first
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Dynamics (CONVAIR) Model 340, 440, and C131, B, C, D, E, and F (Military) series airplanes, including all airplanes converted to turbopropeller power, certificated in any category.
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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