AD 2009-10-14
Unsafe Condition
Failure of counterweight slug attachment bolts, part number B-3386-14H, LFC manufacturing lot 224, leading to separation of the propeller blade counterweight slug, which could result in propeller vibration and damage to the propeller spinner.
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Required Actions
Identify and remove all counterweight slug attachment bolts, part number B-3386-14H, LFC manufacturing lot 224, from service. Install serviceable bolts.
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Compliance Time
Within 50 flight hours after the effective date of the AD.
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Affected Aircraft
Hartzell Propeller Inc. steel hub turbine propellers with counterweight slug attachment bolts, part number B-3386-14H, LFC manufacturing lot 224, installed. These propellers are installed on various airplane models listed in Table 1 of the AD, including but not limited to AERO COMMANDER 680T, 680V, 681, AEROSPACE TECHNOLOGIES N22B, N24A, N22S, N22C, AIR TRACTOR AT-502A, AT-503, 602, AT-802, ANTONOV AN-38, AYRES S-2R, S-2R(-1340), -G(5, 6, 10), -R3S, -R1820, -T(6, 11, 15, 34, 45, 65), S-2R(HG)-T65, S-2R-T( ), BAE (JETSTREAM) 137, BEECH 1900C, 300, 300LW, A36, A36TC, B300, B300C, CASA C-212-CC, -CF, and CESSNA models.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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