AD 84-05-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214B | BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 214B-1 | BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 214ST | BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters |
Unsafe Condition
Cracks in collective sleeves P/N 214-010-411-(all dash numbers) with serial number prefix A-19 could result in loss of collective control.
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Required Actions
Magnetic particle inspect collective sleeves per Bell Service Bulletin 214ST-84-17 or 214B-84-26, remove and replace cracked parts, and comply with specified inspection schedules based on time-in-service.
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Compliance Time
Perform inspection before further flight (for 0-500 hours time-in-service), prior to next 100 hours time-in-service (500-1000 hours), or not later than next 2500 hour overhaul period (1000+ hours).
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Affected Aircraft
Bell Helicopter Textron, Inc. Models 214B, 214B-1, 214ST helicopters with collective sleeves P/N 214-010-411-(all dash numbers) having serial number prefix A-19.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Collective Sleeves
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_84-05-51.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-05-51 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters Subject: Collective Sleeves Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Bell Helicopter Textron, Inc. Model: 214B | 214B-1 | 214ST Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-05-51 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 84-05-51 SUBJECT HEADING: BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: T84-05-51 BELL HELICOPTER TEXTRON INCORPORATED: Telegram issued February 27, 1984. Applies to Bell Helicopter Textron, Incorporated, Models 214B, 214B-1, and 214ST helicopters certified in all categories that are equipped with collective sleeves P/N 214-010-411-(all dash numbers) that have the serial number prefix A-19. (Airworthiness Docket No. 84-ASW-11.) Compliance is required as indicated. A. The affected parts shall be magnetic particle inspected using the procedures described in Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin No. 214ST-84-17 or 214B-84-26, as applicable, or other FAA approved equivalent procedure, in accordance with the following schedule: 1. For those parts in the range of zero to five hundred hours time-in-service, perform the inspection before further flight. 2. For those parts in the range of 500 to 1000 hours time-in-service, perform the inspection prior to the next 100 hours time-in-service. 3. For those parts that have 1000 or more hours in service, perform the inspection not later than the next 2500 hour overhaul period already required by the manufacturer. B. Remove any cracked part from service and replace it with a serviceable part. C. The helicopter may be flown to a repair base for the above inspections under the provisions of FAR 21.197. D. Any equivalent means of compliance with this AD must be approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, Southwest Region. E. Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin 214ST-84-17, or 214B-84-26 is equivalent means of compliance with this AD. This AD becomes effective upon receipt. FOOTER:
Document Text
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AD Final Rules - DRS_84-05-51.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 84-05-51 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters Subject: Collective Sleeves Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Bell Helicopter Textron, Inc. Model: 214B | 214B-1 | 214ST Product Type: Aircraft Product Subtype: Rotorcraft Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 84-05-51 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 84-05-51 SUBJECT HEADING: BELL HELICOPTER TEXTRON INCORPORATED Models 214B, 214B-1, and 214ST helicopters ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: T84-05-51 BELL HELICOPTER TEXTRON INCORPORATED: Telegram issued February 27, 1984. Applies to Bell Helicopter Textron, Incorporated, Models 214B, 214B-1, and 214ST helicopters certified in all categories that are equipped with collective sleeves P/N 214-010-411-(all dash numbers) that have the serial number prefix A-19. (Airworthiness Docket No. 84-ASW-11.) Compliance is required as indicated. A. The affected parts shall be magnetic particle inspected using the procedures described in Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin No. 214ST-84-17 or 214B-84-26, as applicable, or other FAA approved equivalent procedure, in accordance with the following schedule: 1. For those parts in the range of zero to five hundred hours time-in-service, perform the inspection before further flight. 2. For those parts in the range of 500 to 1000 hours time-in-service, perform the inspection prior to the next 100 hours time-in-service. 3. For those parts that have 1000 or more hours in service, perform the inspection not later than the next 2500 hour overhaul period already required by the manufacturer. B. Remove any cracked part from service and replace it with a serviceable part. C. The helicopter may be flown to a repair base for the above inspections under the provisions of FAR 21.197. D. Any equivalent means of compliance with this AD must be approved by the Manager, Helicopter Certification Branch, Federal Aviation Administration, Southwest Region. E. Bell Helicopter Textron, Incorporated, Telegraphic Alert Service Bulletin 214ST-84-17, or 214B-84-26 is equivalent means of compliance with this AD. This AD becomes effective upon receipt. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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