AD 92-06-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 1900C | Airworthiness Directives; Beech Model Airplanes B200, 300, B300, B300C, 1900C |
| aircraft | Textron Aviation Inc. | 300 | Airworthiness Directives; Beech Model Airplanes B200, 300, B300, B300C, 1900C |
| aircraft | Textron Aviation Inc. | B200 | Airworthiness Directives; Beech Model Airplanes B200, 300, B300, B300C, 1900C |
| aircraft | Textron Aviation Inc. | B300 | Airworthiness Directives; Beech Model Airplanes B200, 300, B300, B300C, 1900C |
| aircraft | Textron Aviation Inc. | B300C | Airworthiness Directives; Beech Model Airplanes B200, 300, B300, B300C, 1900C |
Unsafe Condition
Incorrect pilot decisions based on undetected erroneous attitude information displayed by the Collins EFIS-85/86B (14) system or undesired autopilot movement of the airplane.
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Required Actions
Modify the airplane autopilot/flight director system wiring within 50 hours time-in-service after the effective date using Beech SB No. 2423. Modify the hardware of the Collins EFIS-85/86B system, DPU-85N, and MPU-85N within 6 calendar months after the effective date using Collins SBs DPU-85N-34-51 and MPU-85N-34-51. Special flight permits may be issued under FAR 21.197 and 21.199.
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Compliance Time
Within the next 50 hours time-in-service (TIS) after the effective date of this AD and within the next 6 calendar months after the effective date of this AD
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Affected Aircraft
Beech Model Airplanes B200 (BB-1349-BB-1409), 300 (FA-205-FA-217), B300 (FL-1-FL-60), B300C (FM-1-FM-3), 1900C (UC-73, UC-139, UC-147) equipped with Collins DPU-85N and MPU-85N units.
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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