AD 77-22-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 65 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-80 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-88 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-90 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80-8800 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A90 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 65-B80 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | 70 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
| aircraft | Textron Aviation Inc. | A65 | Airworthiness Directives; BEECH Models 65, A65 and A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 Airplanes |
Unsafe Condition
Cracks in the fuselage station 380.00 bulkhead and attached components, and gaps exceeding 0.020 inches between the horizontal stabilizer aft spar and attach plates on the bulkhead, which could compromise structural integrity.
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Required Actions
Inspect the fuselage station 380.00 bulkhead and components for cracks using light and mirror; measure gaps between spar and attach plates with feeler gauges; remove and inspect bolts for cracks; correct gaps exceeding 0.020 inches; file or grind bushings flush with spar; replace cracked components with specified part numbers; comply with service instructions and contact Beech Aircraft for further repair instructions if cracks are found.
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Compliance Time
Within 50 hours time in service after August 19, 1976, or upon accumulation of 650 hours time in service for aircraft with less than 600 hours on August 19, 1976, and at 600 hour intervals thereafter, or within the next 650 hours time in service after the AD's effective date if the next inspection under paragraph B is within less than 50 hours.
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Affected Aircraft
Beech Models 65, A65, A65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, 70, and E90 airplanes with specific serial ranges: Models 65, A65, A65-8200 (Serial Numbers L-1, L-2, L-6, LF-7, LF-8, LC-1 through LC-335); 65-80, 65-A80, 65-A80-8800, 65-B80 (LD-1 through LD-512); 65-88 (LP-1 through LP-26, LP-28, LP-30 through LP-47); 65-90, 65-A90, B90, C90 (LJ-1 through LJ-711); 70 (LB-1 through LB-35); E90 (LW-1 through LW-212).
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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