AD 86-19-15 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus Helicopters | AS355E | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS355F | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS355F1 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS350B | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS350C | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS350D | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
| aircraft | Airbus Helicopters | AS350D1 | Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters |
Unsafe Condition
Failure of the main rotor head sleeves due to excessive time in service beyond specified thresholds.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace main rotor head sleeves (specific part numbers) with serviceable parts within 100 hours' time in service after the effective date if they have exceeded 3,900 (AS 350 series) or 1,400 (AS 355 series) hours' time in service. Sleeves with less time must be replaced before reaching 4,000 or 1,500 hours' time in service respectively. For sudden severe tracking defects, inspect for bush separation and replace sleeves if found before next flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Societe Nationale Industrielle Aerospatiale (SNIAS) Model AS 350 (AS350B, AS350D, AS350D1) and AS 355 series (AS355E, AS355F, AS355F1) helicopters
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Main Rotor Head Sleeves
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_86-19-15_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-19-15 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 35...Show more Subject: Main Rotor Head Sleeves Status: Current Citation: This information is not available. Citation Publish Date: 12/01/1986 Effective Date: 12/18/1986 Make: Airbus Helicopters Model: AS355E | AS355F | AS355F1 | AS350B | AS350C | AS350D | AS350D1 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-730: International Validation Branch CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 86-19-15 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5470 AD NUMBER: 86-19-15 R1 SUBJECT HEADING: Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters ACTION: SUMMARY: DATES: Effective December 18, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-19-15 R1 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-5470. Applies to Aerospatiale Model AS 350 and AS 355 series helicopters, certificated in any category. Compliance is required as indicted unless already accomplished. To prevent failure of the main rotor head sleeves, accomplish the following: (a) For AS 350B and AS 350D helicopters, accomplish the following: (1) Within the next 100 hours' time in service after the effective date of this AD, replace, with serviceable parts, those main rotor head sleeves (Part Numbers (P/N) 350A31.1831.00, .01, .04, .05, .06, and .07) which have 3,900 or more hours' time in service. (2) For those main rotor head sleeves having less than 3,900 hours' time in service on the effective date of this AD, replace with serviceable parts before 4,000 hours' time in service. (b) For AS 355 series helicopters, accomplish the following: (1) Within the next 100 hours' time in service after the effective date of this AD, replace, with serviceable parts, those main rotor head sleeves (P/N's 350A31.1831.04, .05, .06, and .07) which have 1,400 or more hours' time in service. (2) For those main rotor head sleeves having less than 1,400 hours' time in service after the effective date of this AD, replace with serviceable parts before 1,500 hours' time in service. (c) In the event of sudden or repeated occurrence of a severe tracking defect, accomplish the following before the next flight: (1) Remove blades and visually check to determine if outboard sleeve bushes are separated; and (2) If bush separation is found, remove and replace sleeves. (d) An alternate method of compliance with this AD, which provides an equivalent level of safety, may be used when approved by the Manager, Aircraft Certification Division, Federal Aviation Administration, P.O. Box 1689, Fort Worth, Texas 76101, or by the Manager, Aircraft Certification Office, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium. (e) In accordance with FAR sections 21.197 and 21.199, flight is permitted to a base where the maintenance required by this AD may be accomplished. NOTE: Aerospatiale Telex Services 01.13 and 01.16 and French AD's 86-35-28(B) and 86-57-44(B) pertain to this subject. This amendment becomes effective December 18, 1986, as to all persons except those persons to whom it was made immediately effective by priority letter AD 86-19-15 issued September 24, 1986, which contained this amendment. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_86-19-15_R.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-19-15 R1 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 35...Show more Subject: Main Rotor Head Sleeves Status: Current Citation: This information is not available. Citation Publish Date: 12/01/1986 Effective Date: 12/18/1986 Make: Airbus Helicopters Model: AS355E | AS355F | AS355F1 | AS350B | AS350C | AS350D | AS350D1 Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: AIR-700: Compliance & Airworthiness Division Office of Primary Responsibility: AIR-730: International Validation Branch CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 86-19-15 R1 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5470 AD NUMBER: 86-19-15 R1 SUBJECT HEADING: Airworthiness Directives; SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS) Model AS 350 and AS 355 Series Helicopters ACTION: SUMMARY: DATES: Effective December 18, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-19-15 R1 SOCIETE NATIONALE INDUSTRIELLE AEROSPATIALE (SNIAS): Amendment 39-5470. Applies to Aerospatiale Model AS 350 and AS 355 series helicopters, certificated in any category. Compliance is required as indicted unless already accomplished. To prevent failure of the main rotor head sleeves, accomplish the following: (a) For AS 350B and AS 350D helicopters, accomplish the following: (1) Within the next 100 hours' time in service after the effective date of this AD, replace, with serviceable parts, those main rotor head sleeves (Part Numbers (P/N) 350A31.1831.00, .01, .04, .05, .06, and .07) which have 3,900 or more hours' time in service. (2) For those main rotor head sleeves having less than 3,900 hours' time in service on the effective date of this AD, replace with serviceable parts before 4,000 hours' time in service. (b) For AS 355 series helicopters, accomplish the following: (1) Within the next 100 hours' time in service after the effective date of this AD, replace, with serviceable parts, those main rotor head sleeves (P/N's 350A31.1831.04, .05, .06, and .07) which have 1,400 or more hours' time in service. (2) For those main rotor head sleeves having less than 1,400 hours' time in service after the effective date of this AD, replace with serviceable parts before 1,500 hours' time in service. (c) In the event of sudden or repeated occurrence of a severe tracking defect, accomplish the following before the next flight: (1) Remove blades and visually check to determine if outboard sleeve bushes are separated; and (2) If bush separation is found, remove and replace sleeves. (d) An alternate method of compliance with this AD, which provides an equivalent level of safety, may be used when approved by the Manager, Aircraft Certification Division, Federal Aviation Administration, P.O. Box 1689, Fort Worth, Texas 76101, or by the Manager, Aircraft Certification Office, AEU-100, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, Brussels, Belgium. (e) In accordance with FAR sections 21.197 and 21.199, flight is permitted to a base where the maintenance required by this AD may be accomplished. NOTE: Aerospatiale Telex Services 01.13 and 01.16 and French AD's 86-35-28(B) and 86-57-44(B) pertain to this subject. This amendment becomes effective December 18, 1986, as to all persons except those persons to whom it was made immediately effective by priority letter AD 86-19-15 issued September 24, 1986, which contained this amendment. 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.