AD 75-22-18

final rule

Airworthiness Directives; Siai-Marchetti Models S.205-18F and S.205-20F Airplanes

AD Number
75-22-18
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft landing gear and wheel assembly
Problem area Landing gear

Applicability

TypeManufacturerModelDetails
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
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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
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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

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