AD 96-11-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | C90A | Airworthiness Directives; Beech Aircraft Corporation Model C90A Airplanes |
Unsafe Condition
Failure of the elevator electric trim tab system on a Beech Model C90A prompted the proposed AD action. The actions specified by the proposed AD are intended to prevent possible failure of the elevator electric trim tab system, which, if not detected and corrected, could cause loss of airplane maneuverability and possible loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify all elevator electric trim tab actuator assemblies, part number 33-524023-51 to the P/N 33-524023-77 or P/N 33-524023-79 level, by accomplishing the procedures in Beechcraft Mandatory Service Bulletin SB No. 2631, Issued: June 1995, Revised: September 1995.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 150 hours time-in-service (TIS) after the effective date of this AD; or upon installation of an optional Beech elevator electric trim tab system or a Collins autopilot system, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Beech Aircraft Corporation Model C90A airplanes equipped with an optional Beech electric trim system or a Collins autopilot system, specifically serial numbers LJ-1111 through LJ-1410 with pin-type cable guard actuator assembly (P/N 33-524023-51) installed at manufacture, and all serial numbers except LJ-1 through LJ-1110 with the same part number installed through field approval.
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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