AD 75-27-09 R2
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 18A | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 18D | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 18S (Army C-45C) | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3N | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3NM | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3TM | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | A18A | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | A18D | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | Army AT-11 | Airworthiness Directives; BEECH 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | B18S (Army F-2) | Airworthiness Directives; BEECH 18 Series Airplanes |
Unsafe Condition
Failure of wing structure at wing stations 60 and 62 due to cracking, and failure of wing structure due to corrosion pitting and transverse cracking in unwelded spar cap material adjacent to discontinuities such as screw holes, corrosion pits, and tips and edges of welds.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect wing structure and strap components per specified methods including visual, X-ray, penetrant, or magnetic particle inspections. Incorporate STC-approved strap installations and inspection access provisions. Submit reports to FAA on findings and ensure repairs follow manufacturer instructions.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 75 hours' time-in-service after August 22, 1980, or at the time of the next inspection required by this directive. Repetitive inspections must be conducted within intervals not exceeding 1500 or 500 hours' time-in-service depending on strapped or not strapped configurations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Textron Aviation Inc. models 18A, 18D, 18S (Army C-45C), 3N, 3NM, 3TM, A18A, A18D, Army AT-11, B18S (Army F-2), C-45G, and other Beech 18 series airplanes including military counterparts and STC-approved counterparts.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.