AD 91-03-05
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Skyship Services | Skyship 600 | Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) |
Unsafe Condition
Ignition control unit failure and subsequent total loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove all ignition control units Part Number ASI/L/80 Issue D, MOD 1 or 2, and replace with Part Number ASI/L/80 Issue E, MOD 3 units as per Airship Industries Service Bulletin REF 600-74-314, Revision 1. Special flight permits may be obtained under FAR 21.197 and 21.199 to operate to a base for compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 250 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
Skyship Services Model Skyship 600 airships (all serial numbers)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Ignition Control Unit
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_91-03-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-03-05 Document Type: AD Final Rules Docket Number: 90-CE-50-AD Subject Heading: Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) Subject: Ignition Control Unit Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/28/1991 Make: Skyship Services Model: Skyship 600 Product Type: Aircraft Product Subtype: Airship Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-03-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-CE-50-AD AMENDMENT: 39-6871 AD NUMBER: 91-03-05 SUBJECT HEADING: Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) ACTION: SUMMARY: DATES: Effective February 28, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-03-05 AIRSHIP INDUSTRIES: Amendment No. 39-6871; Docket No. 90-CE-50-AD. Applicability: Skyship Model 600 airships (all serial numbers), certificated in any category. Compliance: Required within the next 250 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent ignition control unit failure and subsequent total loss of engine power, accomplish the following: (a) Remove all ignition control units, Part Number (P/N) ASI/L/80 Issue D, MOD 1 or 2, and replace with P/N ASI/L/80 Issue E, MOD 3 ignition control units, as described in Airship Industries Service Bulletin (SB) REF 600-74-314, Revision 1, dated June 5, 1990. (b) 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. (c) An alternate method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Aircraft Certification Staff, Europe, Africa and Middle East Office, FAA, c/o American Embassy, B-1000 Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Staff. (d) All persons affected by this directive may obtain copies of the document referred to herein upon request to Airship Industries Limited, Manager, Technical Publications, Shortstown, Bedford, MK42 OTF, England; or Airship Industries USA, Inc., Engineering Manager, Route 4, Box 109, Elizabeth City, North Carolina 27909; or may examine this document at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. This amendment (39-6871, AD 91-03-05) becomes effective on February 28, 1991. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_91-03-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 91-03-05 Document Type: AD Final Rules Docket Number: 90-CE-50-AD Subject Heading: Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) Subject: Ignition Control Unit Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/28/1991 Make: Skyship Services Model: Skyship 600 Product Type: Aircraft Product Subtype: Airship Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 91-03-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 90-CE-50-AD AMENDMENT: 39-6871 AD NUMBER: 91-03-05 SUBJECT HEADING: Airworthiness Directives; AIRSHIP INDUSTRIES Model 600 Airships (all serial numbers) ACTION: SUMMARY: DATES: Effective February 28, 1991. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 91-03-05 AIRSHIP INDUSTRIES: Amendment No. 39-6871; Docket No. 90-CE-50-AD. Applicability: Skyship Model 600 airships (all serial numbers), certificated in any category. Compliance: Required within the next 250 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent ignition control unit failure and subsequent total loss of engine power, accomplish the following: (a) Remove all ignition control units, Part Number (P/N) ASI/L/80 Issue D, MOD 1 or 2, and replace with P/N ASI/L/80 Issue E, MOD 3 ignition control units, as described in Airship Industries Service Bulletin (SB) REF 600-74-314, Revision 1, dated June 5, 1990. (b) 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. (c) An alternate method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Aircraft Certification Staff, Europe, Africa and Middle East Office, FAA, c/o American Embassy, B-1000 Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Staff. (d) All persons affected by this directive may obtain copies of the document referred to herein upon request to Airship Industries Limited, Manager, Technical Publications, Shortstown, Bedford, MK42 OTF, England; or Airship Industries USA, Inc., Engineering Manager, Route 4, Box 109, Elizabeth City, North Carolina 27909; or may examine this document at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. This amendment (39-6871, AD 91-03-05) becomes effective on February 28, 1991. FOOTER:
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