AD 88-21-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerostar Aircraft Corporation | PA-60-600 (Aerostar 600) | Airworthiness Directives; PIPER PA-60 Series Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601 (Aerostar 601) | Airworthiness Directives; PIPER PA-60 Series Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-601P (Aerostar 601P) | Airworthiness Directives; PIPER PA-60 Series Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-602P (Aerostar 602P) | Airworthiness Directives; PIPER PA-60 Series Airplanes |
| aircraft | Aerostar Aircraft Corporation | PA-60-700P (Aerostar 700P) | Airworthiness Directives; PIPER PA-60 Series Airplanes |
Unsafe Condition
A possible inflight engine fire due to exhaust system issues on PA-60 series airplanes modified with STC SA980NM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 50 hours time-in-service after the effective date, and every 100 hours thereafter, inspect and replace as necessary the exhaust systems and oil lines on both engines per Machen, Inc. SB No. 66-018. Repetitive inspections are no longer required if exhaust systems are modified per SB 66-019.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 50 hours time-in-service after the effective date, and thereafter at every 100 hours time-in-service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Aerostar Aircraft Corporation PA-60 series (all serial numbers) airplanes modified with Machen, Inc. STC SA980NM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Exhaust Systems (STC SA980NM)
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_88-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-21-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; PIPER PA-60 Series Airplanes Subject: Exhaust Systems (STC SA980NM) Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/06/1988 Make: Aerostar Aircraft Corporation Model: PA-60-600 (Aerostar 600) | PA-60-601 (Aerostar 601) | PA-60-601P (Aerostar 601P) | PA-60-602P (Aeros...Show more 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: 88-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6039 AD NUMBER: 88-21-05 SUBJECT HEADING: Airworthiness Directives; PIPER PA-60 Series Airplanes ACTION: SUMMARY: DATES: Effective November 6, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-21-05 PIPER: Amendment 39-6039. Applies to PA-60 series (all serial numbers) airplanes certificated in any category modified per Machen, Inc., Supplemental Type Certification (STC) No. SA980NM. NOTE: STC No. SA980NM pertains to installation of AVCO Lycoming Model TIO-and LTIO-540-J2BD engines. Compliance: Required as indicated, unless previously accomplished. To prevent a possible inflight engine fire, accomplish the following: (a) Within the next 50 hours time-in-service, after the effective date of this AD, and thereafter at every 100 hours time-in-service, inspect, and replace, as necessary, the exhaust systems on both engines in accordance with Machen, Inc. Service Bulletin (SB) No. 66- 018, dated June 5, 1987. (b) The repetitive inspections specified in paragraph (a) are no longer required when the exhaust system has been modified in accordance with Machen, Inc. SB 66-019, dated January 8, 1988. (c) Within the next 50 hours time-in-service, after the effective date of this AD, and thereafter at every 100 hours time-in-service, inspect, and replace as necessary the oil lines on both engines in accordance with Machen, Inc. SB 66-018, dated June 5, 1987. (d) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (e) An equivalent means of compliance with this AD may be used if approved by the Manager, Modification Branch, ANM-190S, FAA, Northwest Mountain Region, 17900 Pacific Highway South, C-68966, Seattle, Washington 98168. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Machen, Inc., South 3608 Davison Boulevard, Spokane, Washington 99204 or may examine these documents at the Office of the Assistant Chief Counsel, Room 1558, FAA, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-6039, becomes effective on November 6, 1988. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_88-21-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-21-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; PIPER PA-60 Series Airplanes Subject: Exhaust Systems (STC SA980NM) Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/06/1988 Make: Aerostar Aircraft Corporation Model: PA-60-600 (Aerostar 600) | PA-60-601 (Aerostar 601) | PA-60-601P (Aerostar 601P) | PA-60-602P (Aeros...Show more 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: 88-21-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6039 AD NUMBER: 88-21-05 SUBJECT HEADING: Airworthiness Directives; PIPER PA-60 Series Airplanes ACTION: SUMMARY: DATES: Effective November 6, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-21-05 PIPER: Amendment 39-6039. Applies to PA-60 series (all serial numbers) airplanes certificated in any category modified per Machen, Inc., Supplemental Type Certification (STC) No. SA980NM. NOTE: STC No. SA980NM pertains to installation of AVCO Lycoming Model TIO-and LTIO-540-J2BD engines. Compliance: Required as indicated, unless previously accomplished. To prevent a possible inflight engine fire, accomplish the following: (a) Within the next 50 hours time-in-service, after the effective date of this AD, and thereafter at every 100 hours time-in-service, inspect, and replace, as necessary, the exhaust systems on both engines in accordance with Machen, Inc. Service Bulletin (SB) No. 66- 018, dated June 5, 1987. (b) The repetitive inspections specified in paragraph (a) are no longer required when the exhaust system has been modified in accordance with Machen, Inc. SB 66-019, dated January 8, 1988. (c) Within the next 50 hours time-in-service, after the effective date of this AD, and thereafter at every 100 hours time-in-service, inspect, and replace as necessary the oil lines on both engines in accordance with Machen, Inc. SB 66-018, dated June 5, 1987. (d) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (e) An equivalent means of compliance with this AD may be used if approved by the Manager, Modification Branch, ANM-190S, FAA, Northwest Mountain Region, 17900 Pacific Highway South, C-68966, Seattle, Washington 98168. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Machen, Inc., South 3608 Davison Boulevard, Spokane, Washington 99204 or may examine these documents at the Office of the Assistant Chief Counsel, Room 1558, FAA, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-6039, becomes effective on November 6, 1988. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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