AD 65-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; Fairchild Model F-27 Series Airplanes |
Unsafe Condition
Corrosion of the magnesium aileron control sectors.
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Required Actions
Visually inspect all surfaces of each aileron sector for corrosion. If corrosion is found, replace the part with an unused part of the same part number or an equivalent approved part, replace with Fairchild Hiller aluminum aileron sectors of specified part numbers, or remove corrosion following specified service letters and reinspect within 16 weeks. If no corrosion is found, repeat inspection within one year.
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Compliance Time
Within the next four weeks after the effective date (December 17, 1965) for airplanes with two or more years installed time on the effective date, or before the accumulation of two years and four weeks installed time for those with less than two years installed time, unless already accomplished within the last twelve weeks.
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Affected Aircraft
Maryland Air Industries, Inc. Model F-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M airplanes with aileron sectors P/N 27-727207-21, 27-727208-21, 27-727209-21, 27-727300-21, or 27-727381-21.
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Federal Register Abstract
Aileron Control Sectors
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_65-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-26-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Model F-27 Series Airplanes Subject: Aileron Control Sectors Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/17/1965 Make: Maryland Air Industries, Inc. Model: F-27 | F-27A | F-27B | F-27F | F-27G | F-27J | F-27M Product Type: Aircraft Product Subtype: Large 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: 65-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-157 AD NUMBER: 65-26-01 SUBJECT HEADING: Airworthiness Directives; Fairchild Model F-27 Series Airplanes ACTION: SUMMARY: DATES: Effective December 17, 1965. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-26-01 FAIRCHILD: Amdt. 39-157 Part 39 Federal Register November 17, 1965. Applies to Model F-27 Series Airplanes. Compliance required as indicated. To prevent further corrosion of the magnesium aileron control sectors, accomplish the following: (a) For airplanes with aileron sectors, P/N's 27-727207-21, 27-727208-21, 27-727209-21, 27-727300-21, and 27-727381-21, with two or more years installed time on the effective date of this AD, comply with (c) within the next four weeks after the effective date of this AD, unless already accomplished within the last twelve weeks. (b) For airplanes with aileron sectors specified in (a), with less than two years installed time on the effective date of this AD, comply with (c) before the accumulation of two years and four weeks installed time, unless already accomplished within the last twelve weeks. (c) Visually inspect all surfaces of each aileron sector for corrosion. NOTE. - Aileron sectors, P/N's 27-727207-21, 27-727208-21, and 27-727209-21 are located under the cockpit floor, on the auxiliary shaft at Fuselage Station 129.917, approximately 20 inches to the left and right of the center of fuselage. Aileron sector, P/N 27-727300-21, is located in the left wing center section at Wing Station 54.135, and is mounted on the aft face of the wing rear spar. Aileron sector, P/N 27-727381-21, is located in both the left and right wing outer panel, at Wing Station 398.320 and is mounted on the aft face of the wing rear spar. During the inspection required by (c), particular attention should be given to the cable groove, ball socket and ball sleeve. (1) If corrosion is found, before further flight except that the airplane may be flown in accordance with FAR 21.197 to a base where the repair can be made: (i) Replace the part with an unused part of the same part number or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, and comply with (c) within two years from the inspection; (ii) Replace the part with Fairchild Hiller aluminum aileron sector P/N 27-727207-23, 27-727208-23, 27-727209-23, 27-727300-23, or 27-727381-23 as applicable, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region; or (iii) Remove the corrosion in accordance with (d) and reinspect in accordance with (c) at intervals not to exceed 16 weeks from the last inspection. If corrosion is found, comply with (c)(1). (2) If no corrosion is found, comply with (c) within one year from the inspection. (d) Remove corrosion from aileron sectors, P/N's 27-727207-21, 27-727208-21, and 27-727209-21, in accordance with Fairchild Service Letter No. 311, dated April 12, 1965, or later FAA-approved revision or an FAA-approved equivalent; from aileron sector, P/N 27-727300-21, in accordance with Fairchild Service Letter No. 307 dated September 17, 1963, or later FAA-approved revision or an FAA-approved equivalent; from aileron sector P/N 27-727381-21, in accordance with Fairchild Service Letter No. 306, dated August 22, 1963, or later FAA-approved revision or an FAA-approved equivalent. (e) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator. This directive effective December 17, 1965. FOOTER:
Document Text
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AD Final Rules - DRS_65-26-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-26-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild Model F-27 Series Airplanes Subject: Aileron Control Sectors Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/17/1965 Make: Maryland Air Industries, Inc. Model: F-27 | F-27A | F-27B | F-27F | F-27G | F-27J | F-27M Product Type: Aircraft Product Subtype: Large 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: 65-26-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-157 AD NUMBER: 65-26-01 SUBJECT HEADING: Airworthiness Directives; Fairchild Model F-27 Series Airplanes ACTION: SUMMARY: DATES: Effective December 17, 1965. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-26-01 FAIRCHILD: Amdt. 39-157 Part 39 Federal Register November 17, 1965. Applies to Model F-27 Series Airplanes. Compliance required as indicated. To prevent further corrosion of the magnesium aileron control sectors, accomplish the following: (a) For airplanes with aileron sectors, P/N's 27-727207-21, 27-727208-21, 27-727209-21, 27-727300-21, and 27-727381-21, with two or more years installed time on the effective date of this AD, comply with (c) within the next four weeks after the effective date of this AD, unless already accomplished within the last twelve weeks. (b) For airplanes with aileron sectors specified in (a), with less than two years installed time on the effective date of this AD, comply with (c) before the accumulation of two years and four weeks installed time, unless already accomplished within the last twelve weeks. (c) Visually inspect all surfaces of each aileron sector for corrosion. NOTE. - Aileron sectors, P/N's 27-727207-21, 27-727208-21, and 27-727209-21 are located under the cockpit floor, on the auxiliary shaft at Fuselage Station 129.917, approximately 20 inches to the left and right of the center of fuselage. Aileron sector, P/N 27-727300-21, is located in the left wing center section at Wing Station 54.135, and is mounted on the aft face of the wing rear spar. Aileron sector, P/N 27-727381-21, is located in both the left and right wing outer panel, at Wing Station 398.320 and is mounted on the aft face of the wing rear spar. During the inspection required by (c), particular attention should be given to the cable groove, ball socket and ball sleeve. (1) If corrosion is found, before further flight except that the airplane may be flown in accordance with FAR 21.197 to a base where the repair can be made: (i) Replace the part with an unused part of the same part number or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, and comply with (c) within two years from the inspection; (ii) Replace the part with Fairchild Hiller aluminum aileron sector P/N 27-727207-23, 27-727208-23, 27-727209-23, 27-727300-23, or 27-727381-23 as applicable, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region; or (iii) Remove the corrosion in accordance with (d) and reinspect in accordance with (c) at intervals not to exceed 16 weeks from the last inspection. If corrosion is found, comply with (c)(1). (2) If no corrosion is found, comply with (c) within one year from the inspection. (d) Remove corrosion from aileron sectors, P/N's 27-727207-21, 27-727208-21, and 27-727209-21, in accordance with Fairchild Service Letter No. 311, dated April 12, 1965, or later FAA-approved revision or an FAA-approved equivalent; from aileron sector, P/N 27-727300-21, in accordance with Fairchild Service Letter No. 307 dated September 17, 1963, or later FAA-approved revision or an FAA-approved equivalent; from aileron sector P/N 27-727381-21, in accordance with Fairchild Service Letter No. 306, dated August 22, 1963, or later FAA-approved revision or an FAA-approved equivalent. (e) Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Eastern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase for such operator. This directive effective December 17, 1965. FOOTER:
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Retrieved: Apr 8, 2026
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