AD 89-21-08
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | EADS CASA | C-212-CB | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-CC | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-CD | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-CE | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-CF | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-DE | Airworthiness Directives; CASA Model C-212 Series Airplanes |
| aircraft | EADS CASA | C-212-DF | Airworthiness Directives; CASA Model C-212 Series Airplanes |
Unsafe Condition
Airframe damage due to flutter caused by certain single failure conditions of the trim control system components.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace elevator, rudder, and aileron trim control system components in accordance with CASA Service Bulletin 212-27-25, Revision 6, dated February 24, 1989. An alternate means of compliance or adjustment of the compliance time may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 60 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Model C-212 series airplanes, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Trim Control System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_89-21-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-21-08 Document Type: AD Final Rules Docket Number: 89-NM-125-AD: Subject Heading: Airworthiness Directives; CASA Model C-212 Series Airplanes Subject: Trim Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/05/1989 Make: EADS CASA Model: C-212-CB | C-212-CC | C-212-CD | C-212-CE | C-212-CF | C-212-DE | C-212-DF Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 89-21-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-125-AD: AMENDMENT: 39-6348 AD NUMBER: 89-21-08 SUBJECT HEADING: Airworthiness Directives; CASA Model C-212 Series Airplanes ACTION: SUMMARY: DATES: Effective October 5, 1989. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-21-08 CASA: Amendment 39-6348. Docket No. 89-NM-125-AD. Applicability: All Model C-212 series airplanes, certificated in any category. Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished. To prevent airframe damage due to flutter caused by certain single failure conditions of the trim control system components, accomplish the following: A. Replace elevator, rudder, and aileron trim control system components, in accordance with CASA Service Bulletin 212-27-25, Revision 6, dated February 24, 1989. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Construcciones Aeronatuicas S.A. (CASA) Getafe, Madrid, Spain. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This AD supersedes AD 87-18-08 (Amendment 39-5724) as revised by AD 87-18-08 R1 (Amendment 39-6013) which became effective on October 11, 1988. This amendment (39-6348, AD 89-21-08) becomes effective on October 5, 1989. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_89-21-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 89-21-08 Document Type: AD Final Rules Docket Number: 89-NM-125-AD: Subject Heading: Airworthiness Directives; CASA Model C-212 Series Airplanes Subject: Trim Control System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/05/1989 Make: EADS CASA Model: C-212-CB | C-212-CC | C-212-CD | C-212-CE | C-212-CF | C-212-DE | C-212-DF 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: 89-21-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 89-NM-125-AD: AMENDMENT: 39-6348 AD NUMBER: 89-21-08 SUBJECT HEADING: Airworthiness Directives; CASA Model C-212 Series Airplanes ACTION: SUMMARY: DATES: Effective October 5, 1989. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 89-21-08 CASA: Amendment 39-6348. Docket No. 89-NM-125-AD. Applicability: All Model C-212 series airplanes, certificated in any category. Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished. To prevent airframe damage due to flutter caused by certain single failure conditions of the trim control system components, accomplish the following: A. Replace elevator, rudder, and aileron trim control system components, in accordance with CASA Service Bulletin 212-27-25, Revision 6, dated February 24, 1989. B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113. C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Construcciones Aeronatuicas S.A. (CASA) Getafe, Madrid, Spain. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington. This AD supersedes AD 87-18-08 (Amendment 39-5724) as revised by AD 87-18-08 R1 (Amendment 39-6013) which became effective on October 11, 1988. This amendment (39-6348, AD 89-21-08) becomes effective on October 5, 1989. 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.