AD 61-25-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | D & R Nevada LLC | 22 | Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft |
| aircraft | D & R Nevada LLC | 22M | Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft |
Unsafe Condition
An inflight engine pod explosion caused by an open starter bleed air supply valve leading to continued rotation, overheating, and disintegration of the air turbine starter.
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Required Actions
Install a FAA-approved cockpit indicator to verify engine starters are de-energized, revise the Airplane Flight Manual's engine starting procedures to include checking the indicator post-start, and temporarily install a placard or revise the manual to follow Convair Alert Service Bulletin No. 80-3 until permanent modifications are completed.
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Compliance Time
Within 4,000 hours' time in service after December 29, 1961 for paragraphs (a) and (b); compliance with paragraph (c) is required on the effective date of the directive (December 29, 1961).
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Affected Aircraft
CONVAIR Models 22 (880) and 22M (880M) Aircraft, all serial numbers.
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Federal Register Abstract
Engine Starter Warning Indicator
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_61-25-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-25-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft Subject: Engine Starter Warning Indicator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/29/1961 Make: D & R Nevada LLC Model: 22 | 22M Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 61-25-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-25-02 SUBJECT HEADING: Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft ACTION: SUMMARY: DATES: Effective December 29, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-25-02 CONVAIR: Amdt. 373 Part 507 Federal Register November 29, 1961. Applies to All Model 22 (880) and Model 22M (880M) Aircraft. Compliance with paragraphs (a) and (b) required within 4,000 hours' time in service after effective date of this directive. Compliance with paragraph (c) is required on effective date of this directive. An inflight engine pod explosion occurred on a Model 22 airplane causing the loss of a nose cowl and portions of the side cowl panel doors. This incident has been attributed to an open starter bleed air supply valve causing continued rotation and subsequent overheating and disintegration of the air turbine starter. The following modifications and procedures are required to prevent the recurrence of this incident: (a) Provide a FAA approved cockpit indicating means by which it can be determined that each engine starter is de-energized. Approval of this item shall be processed through the FAA, Flight Standards Service, Engineering and Manufacturing Branch, Western Region. (b) Concurrently with the incorporation of the modification described in paragraph (a), the Normal Procedures Section of the Models 22 and 22M FAA Approved Airplane Flight Manual, under that portion entitled "Engine Starting Procedure - Ground", shall be revised to include a provision that the flight crew determine that the cockpit indicating means required by paragraph (a) indicates that the starter is de-energized after each engine start. (c) Pending completion of the modifications required by paragraph (a) of this AD either install placard in the flight compartment on the pilot's start switch panel to read as follows: "Engine ground starts shall be made according to Convair Alert Service Bulletin No. 80-3", or revise the Normal Procedures Section of the Models 22 and 22M FAA Approved Airplane Flight Manual, under that portion entitled "Engine Starting Procedure - Ground", to provide for engine ground starts to be made according to Convair Alert Service Bulletin No. 80-3 or FAA Approved equivalent. This directive effective December 29, 1961. FOOTER:
Document Text
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AD Final Rules - DRS_61-25-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 61-25-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft Subject: Engine Starter Warning Indicator Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/29/1961 Make: D & R Nevada LLC Model: 22 | 22M 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: 61-25-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 61-25-02 SUBJECT HEADING: Airworthiness Directives; CONVAIR Models 22 (880) and 22M (880M) Aircraft ACTION: SUMMARY: DATES: Effective December 29, 1961. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 61-25-02 CONVAIR: Amdt. 373 Part 507 Federal Register November 29, 1961. Applies to All Model 22 (880) and Model 22M (880M) Aircraft. Compliance with paragraphs (a) and (b) required within 4,000 hours' time in service after effective date of this directive. Compliance with paragraph (c) is required on effective date of this directive. An inflight engine pod explosion occurred on a Model 22 airplane causing the loss of a nose cowl and portions of the side cowl panel doors. This incident has been attributed to an open starter bleed air supply valve causing continued rotation and subsequent overheating and disintegration of the air turbine starter. The following modifications and procedures are required to prevent the recurrence of this incident: (a) Provide a FAA approved cockpit indicating means by which it can be determined that each engine starter is de-energized. Approval of this item shall be processed through the FAA, Flight Standards Service, Engineering and Manufacturing Branch, Western Region. (b) Concurrently with the incorporation of the modification described in paragraph (a), the Normal Procedures Section of the Models 22 and 22M FAA Approved Airplane Flight Manual, under that portion entitled "Engine Starting Procedure - Ground", shall be revised to include a provision that the flight crew determine that the cockpit indicating means required by paragraph (a) indicates that the starter is de-energized after each engine start. (c) Pending completion of the modifications required by paragraph (a) of this AD either install placard in the flight compartment on the pilot's start switch panel to read as follows: "Engine ground starts shall be made according to Convair Alert Service Bulletin No. 80-3", or revise the Normal Procedures Section of the Models 22 and 22M FAA Approved Airplane Flight Manual, under that portion entitled "Engine Starting Procedure - Ground", to provide for engine ground starts to be made according to Convair Alert Service Bulletin No. 80-3 or FAA Approved equivalent. This directive effective December 29, 1961. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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