AD 91-23-05
Unsafe Condition
Reduced controllability of the airplane due to aileron, elevator, and rudder servomotors P/N 622-7925-302 and servomounts P/N 622-7926-302/622-8069-302.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace aileron, elevator, and rudder servomotors P/N 622-7925-302 with P/N 622-7925-303 per Fokker SB F100-22-015. Replace aileron, rudder servomounts P/N 622-7926-302 and elevator servomounts P/N 622-8069-302 with modified P/N 622-7926-303 and 622-8069-303 per Fokker SB F100-22-018, Rev 1.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 6 months after the effective date of this AD (December 17, 1991).
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Affected Aircraft
FOKKER Model F-28 Mark 0100 series airplanes with serial numbers 11244 through 11306, 11308, 11310, 11312, 11313, 11314, 11316, and 11318.
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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