AD 77-19-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 18A | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 18D | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 18S (Army C-45C) | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3N | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3NM | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | 3TM | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | A18A | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | A18D | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | Army AT-11 | Airworthiness Directives; BEECH Model 18 Series Airplanes |
| aircraft | Textron Aviation Inc. | B18S (Army F-2) | Airworthiness Directives; BEECH Model 18 Series Airplanes |
Unsafe Condition
Cracking of the pilot's and copilot's control column assembly and the Beech P/N 187504 elevator control arm assembly, particularly around the taper pins, could result in control system failure.
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Required Actions
Inspect control columns and elevator control arm assembly for cracks using visual, magnetic particle, or penetrant procedures. Repair or replace cracked components with airworthy parts before next flight. Submit reports to FAA within one week of finding cracks. Compliance intervals may be extended up to 30 hours or one calendar month as specified.
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Compliance Time
Within 30 days after the effective date (September 29, 1977) and each 300 hours time-in-service or 12 calendar months thereafter, whichever occurs first.
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Affected Aircraft
Beech Model 18 series airplanes, including military counterparts and those modified under supplemental type certificates.
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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