AD 64-07-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Univair Aircraft Corporation | F12A-3 | FLOTTORP Models F12A-3 and F12A-5 Series Propellers |
| aircraft | Univair Aircraft Corporation | F12A-5 | FLOTTORP Models F12A-3 and F12A-5 Series Propellers |
| propeller | Univair Aircraft Corporation | F12A-3 | FLOTTORP Models F12A-3 and F12A-5 Series Propellers |
| propeller | Univair Aircraft Corporation | F12A-5 | FLOTTORP Models F12A-3 and F12A-5 Series Propellers |
Unsafe Condition
The use of longer AN 4H7A bolts with the FS200-1 propeller spinner may cause interference with the propeller flange, leading to potential structural failure of the spinner bulkhead attachment.
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Required Actions
Remove the six AN 4H7A bolts and reinstall shorter AN 4H6A bolts. Reuse the AN 960-416L washers, torque bolts to 70 to 90 inch-pounds, and safety wire boltheads with MS20995-C32 safety wire.
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Compliance Time
Within 15 hours' time in service after the effective date of this AD
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Affected Aircraft
FLOTTORP Models F12A-3 and F12A-5 Series Propellers with FS200-1 Propeller Spinner
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Federal Register Abstract
Propeller Spinner
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_64-07-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-07-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: FLOTTORP Models F12A-3 and F12A-5 Series Propellers Subject: Propeller Spinner Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/10/1964 Make: Univair Aircraft Corporation Model: F12A-3 | F12A-5 Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 64-07-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-700 AD NUMBER: 64-07-03 SUBJECT HEADING: FLOTTORP Models F12A-3 and F12A-5 Series Propellers ACTION: SUMMARY: DATES: Effective April 10, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-07-03 FLOTTORP: Amdt. 700 Part 507 Federal Register March 11, 1964. Applies to All F12A-3 and F12A-5 Series Propellers with FS200-1 Propeller Spinner. Compliance required as indicated. Within 15 hours' time in service after the effective date of this AD, accomplish the following rework unless already accomplished: Remove the six AN 4H7A bolts attaching the 248-1 spinner bulkhead to the propeller flange and reinstall six shorter AN 4H6A bolts. The old AN 960-416L washers may be reused. Torque bolts to 70 to 90 inch- pounds. Safety wire all boltheads with MS20995-C32 safety wire. This directive effective April 10, 1964. FOOTER:
Document Text
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AD Final Rules - DRS_64-07-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 64-07-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: FLOTTORP Models F12A-3 and F12A-5 Series Propellers Subject: Propeller Spinner Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/10/1964 Make: Univair Aircraft Corporation Model: F12A-3 | F12A-5 Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 64-07-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-700 AD NUMBER: 64-07-03 SUBJECT HEADING: FLOTTORP Models F12A-3 and F12A-5 Series Propellers ACTION: SUMMARY: DATES: Effective April 10, 1964. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 64-07-03 FLOTTORP: Amdt. 700 Part 507 Federal Register March 11, 1964. Applies to All F12A-3 and F12A-5 Series Propellers with FS200-1 Propeller Spinner. Compliance required as indicated. Within 15 hours' time in service after the effective date of this AD, accomplish the following rework unless already accomplished: Remove the six AN 4H7A bolts attaching the 248-1 spinner bulkhead to the propeller flange and reinstall six shorter AN 4H6A bolts. The old AN 960-416L washers may be reused. Torque bolts to 70 to 90 inch- pounds. Safety wire all boltheads with MS20995-C32 safety wire. This directive effective April 10, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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