AD 59-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | A35 | Airworthiness Directives; Beech Models A35, B35, C35 Aircraft |
| aircraft | Textron Aviation Inc. | B35 | Airworthiness Directives; Beech Models A35, B35, C35 Aircraft |
| aircraft | Textron Aviation Inc. | C35 | Airworthiness Directives; Beech Models A35, B35, C35 Aircraft |
Unsafe Condition
Malfunctioning landing gear limit switches due to oil accumulation in the switch, leading to landing gear actuation failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect switches in the gear box area. If switches are located under the gear box, either clean and seal the switch case parting surfaces with specified materials and reinstall, or replace with new switches installed in a location to prevent oil contamination. Follow Beechcraft Service Bulletin 35-21, A35-14, B35-7, and C35-5, including the August 15, 1953 supplement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to July 1, 1959
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Beech Models A35, B35, C35, Serial Numbers D-1501 Through D-2800.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Landing Gear Limit Switches
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_59-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Models A35, B35, C35 Aircraft Subject: Landing Gear Limit Switches Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: A35 | B35 | C35 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 59-08-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-08-01 SUBJECT HEADING: Airworthiness Directives; Beech Models A35, B35, C35 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-08-01 BEECH: Applies to Models A35, B35, C35, Serial Numbers D-1501 Through D-2800. Compliance required prior to July 1, 1959. Several cases of landing gear actuation failure have been attributed to malfunctioning of the landing gear limit switches due to oil accumulation in the switch. Inspect the switches in the gear box area and if they are located under the gear box they must be: (1) Cleaned and sealed at the switch case parting surfaces with polyethylene, vinyl or rubber cement and reinstalled in the same location; (use minimum cement to assure that none gets inside switch) or (2) Replaced with new switches installed in a location to preclude oil contamination. Beechcraft Service Bulletin 35-21, A35-14, B35-7, and C35-5, dated June 1, 1953, and Supplement dated August 15, 1953, provide an acceptable procedure for relocation of the switches. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_59-08-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 59-08-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Models A35, B35, C35 Aircraft Subject: Landing Gear Limit Switches Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: A35 | B35 | C35 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 59-08-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 59-08-01 SUBJECT HEADING: Airworthiness Directives; Beech Models A35, B35, C35 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 59-08-01 BEECH: Applies to Models A35, B35, C35, Serial Numbers D-1501 Through D-2800. Compliance required prior to July 1, 1959. Several cases of landing gear actuation failure have been attributed to malfunctioning of the landing gear limit switches due to oil accumulation in the switch. Inspect the switches in the gear box area and if they are located under the gear box they must be: (1) Cleaned and sealed at the switch case parting surfaces with polyethylene, vinyl or rubber cement and reinstalled in the same location; (use minimum cement to assure that none gets inside switch) or (2) Replaced with new switches installed in a location to preclude oil contamination. Beechcraft Service Bulletin 35-21, A35-14, B35-7, and C35-5, dated June 1, 1953, and Supplement dated August 15, 1953, provide an acceptable procedure for relocation of the switches. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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