AD 75-22-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aermacchi S.p.A. | S.205 - 18/F | Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes |
| aircraft | Aermacchi S.p.A. | S.205 - 20/F | Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes |
Unsafe Condition
Failure of the nose landing gear due to cracks in the drag brace P/N 205-9-135 and its attachments P/Ns 205-1-059-01.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the nose landing gear drag brace and attachments using visual and dye-penetrant methods per SB 205B33. Replace cracked components with reinforced parts (P/N 205-9-135-03 and P/Ns 205-1-180-01/-02) before further flight if cracks are found. If no cracks, replace parts within 50 hours' time in service or before 600 total hours, whichever is later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours' time in service after the effective date (November 5, 1975), and thereafter every 50 hours' time in service. For hard-landings, inspections must be done before next takeoff unless flown under FAR 21.197/199 to a base for compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Siai-Marchetti Models S.205-18F and S.205-20F airplanes with serial numbers 001-003; 102-399 (except 109); 4-101-4-282 (except 4-245); 4-285; 5-303.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Nose Landing Gear
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_75-22-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-22-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes Subject: Nose Landing Gear Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/05/1975 Make: Aermacchi S.p.A. Model: S.205 - 18/F | S.205 - 20/F Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 75-22-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2408 AD NUMBER: 75-22-18 SUBJECT HEADING: Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes ACTION: SUMMARY: DATES: Effective November 5, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-22-18 SIAI-MARCHETTI: Amendment 39-2408. Applies to Models S.205-18F and -20F airplanes, S/Ns 001 through 003; 102 through 399 (except S/N 109); 4-101 through 4-282 (except S/N 4-245); 4-285, and 5-303, certificated in all categories. Compliance is required as indicated, unless already accomplished. To prevent possible failure of the nose landing gear, accomplish the following: (a) Comply with paragraph (b) of this AD - (1) Within the next 10 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 50 hours' time in service from the last inspection; and (2) Prior to the next takeoff after each hard-landing, except that the airplane may be flown in accordance with FAR Section 21.197 and 21.199 to a base where paragraph (b) can be complied with. (b) Inspect by visual and dye-penetrant methods the nose landing gear drag brace, P/N 205-9-135, and the area around the drag brace attachments, P/Ns 205-1-059-01, in accordance with paragraph a. of the "Instructions" section of SIAI Marchetti Service Bulletin, S.B. No. 205B33, dated January 8, 1972, or an FAA-approved equivalent. (c) Comply with paragraph (d) of this AD as follows: (1) If a crack is found during the inspection required by paragraphs (a) and (b) of this AD, comply with paragraph (d) of this AD before further flight, except that the airplane may be flown in accordance with FAR 21.197 and 21.199 to a base where paragraph (d) can be complied with. (2) If a crack is not found during an inspection required by paragraphs (a) and (b) of this AD, comply with paragraph (d) of this AD within the next 50 hours' time in service after the effective date of this AD or prior to the accumulation of 600 hours' total airplane time in service, whichever occurs later. (d) Replace the nose landing gear dray brace P/N 205-9-135, with a serviceable reinforced drag brace, P/N 205-9-135-03, and replace the two drag brace attachments, P/Ns 205- 1-059-01, with serviceable drag brace attachments, P/Ns 205-1-180-01 and -02, in accordance with paragraph b. of the "Instructions" section of SIAI Marchetti Service Bulletin S.B. No. 205B33 dated January 8, 1972, or an FAA-approved equivalent. (e) The inspections required by paragraphs (a) and (b) of this AD may be discontinued upon accomplishment of the replacements required by paragraphs (c) and (d) of this AD. This amendment becomes effective November 5, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_75-22-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-22-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes Subject: Nose Landing Gear Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/05/1975 Make: Aermacchi S.p.A. Model: S.205 - 18/F | S.205 - 20/F 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: 75-22-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2408 AD NUMBER: 75-22-18 SUBJECT HEADING: Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes ACTION: SUMMARY: DATES: Effective November 5, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-22-18 SIAI-MARCHETTI: Amendment 39-2408. Applies to Models S.205-18F and -20F airplanes, S/Ns 001 through 003; 102 through 399 (except S/N 109); 4-101 through 4-282 (except S/N 4-245); 4-285, and 5-303, certificated in all categories. Compliance is required as indicated, unless already accomplished. To prevent possible failure of the nose landing gear, accomplish the following: (a) Comply with paragraph (b) of this AD - (1) Within the next 10 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 50 hours' time in service from the last inspection; and (2) Prior to the next takeoff after each hard-landing, except that the airplane may be flown in accordance with FAR Section 21.197 and 21.199 to a base where paragraph (b) can be complied with. (b) Inspect by visual and dye-penetrant methods the nose landing gear drag brace, P/N 205-9-135, and the area around the drag brace attachments, P/Ns 205-1-059-01, in accordance with paragraph a. of the "Instructions" section of SIAI Marchetti Service Bulletin, S.B. No. 205B33, dated January 8, 1972, or an FAA-approved equivalent. (c) Comply with paragraph (d) of this AD as follows: (1) If a crack is found during the inspection required by paragraphs (a) and (b) of this AD, comply with paragraph (d) of this AD before further flight, except that the airplane may be flown in accordance with FAR 21.197 and 21.199 to a base where paragraph (d) can be complied with. (2) If a crack is not found during an inspection required by paragraphs (a) and (b) of this AD, comply with paragraph (d) of this AD within the next 50 hours' time in service after the effective date of this AD or prior to the accumulation of 600 hours' total airplane time in service, whichever occurs later. (d) Replace the nose landing gear dray brace P/N 205-9-135, with a serviceable reinforced drag brace, P/N 205-9-135-03, and replace the two drag brace attachments, P/Ns 205- 1-059-01, with serviceable drag brace attachments, P/Ns 205-1-180-01 and -02, in accordance with paragraph b. of the "Instructions" section of SIAI Marchetti Service Bulletin S.B. No. 205B33 dated January 8, 1972, or an FAA-approved equivalent. (e) The inspections required by paragraphs (a) and (b) of this AD may be discontinued upon accomplishment of the replacements required by paragraphs (c) and (d) of this AD. This amendment becomes effective November 5, 1975. FOOTER:
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.