AD 73-20-08
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Tarver Propellers, LLC | 220 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| aircraft | Tarver Propellers, LLC | F200 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| aircraft | Tarver Propellers, LLC | F200-H | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| propeller | Tarver Propellers, LLC | 220 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| propeller | Tarver Propellers, LLC | F200 | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
| propeller | Tarver Propellers, LLC | F200-H | UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers |
Unsafe Condition
Propeller blade tipping may have loosening, loose rivets, or deteriorated wood under the tipping, or lack of a relief cut in the stainless steel tipping material within the first five and one-half inches inboard from the tip, leading to potential failure.
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Required Actions
Visually inspect the propeller blade tipping for evidence of loosening, loose rivets, or deteriorated wood. Measure the distance from the blade tipping outboard end to the first relief cut in the stainless steel tipping material inboard from the tip. Repair or replace blades with defective tipping; return blades with late style one piece tipping (no relief cut within 5.5 inches) to Univair for inspection and rework within 25 flight hours.
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Compliance Time
Required after receipt of this Airworthiness Directive and before further flight unless already accomplished.
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Affected Aircraft
UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 propellers, all serial numbers.
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Federal Register Abstract
Tipping
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_73-20-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-20-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers Subject: Tipping Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/04/1973 Make: Tarver Propellers, LLC Model: 220 | F200 | F200-H 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: 73-20-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1730 AD NUMBER: 73-20-08 SUBJECT HEADING: UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers ACTION: SUMMARY: DATES: Effective October 4, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-20-08 UNIVAIR AIRCRAFT CORPORATION (formerly Koppers): Amendment 39-1730. Applies to all propeller blades eligible in Models F200, F200H, and 220 propellers. Compliance: Required after receipt of this Airworthiness Directive and before further flight unless already accomplished. The inspection specified in (a) below must be performed. Propeller blades found to have defective tipping must be repaired or replaced before further flight. Propeller blades found to have the late style one piece tipping, but which have no apparent defects must be returned to Univair Aircraft Corporation, Route 3, Box 59, Aurora, Colorado 80010, within the next 25 hours of flight for inspection and rework or replacement as found necessary. (a) Visually inspect the propeller blade tipping for evidence of loosening, loose rivets or deteriorated wood under the tipping. Measure the distance from the blade tipping outboard end to the first relief cut in the stainless steel tipping material inboard from the tip. Blades on which there is no relief cut in the stainless steel tipping material in the first five and one-half (5 1/2) inches inboard from the tip have the late style, one piece tipping installed. Service Bulletin No. 29 on this same subject is available from Univair Aircraft Corporation, Route 3, Box 59, Aurora, Colorado 80010. This amendment becomes effective October 4, 1973. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_73-20-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 73-20-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers Subject: Tipping Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/04/1973 Make: Tarver Propellers, LLC Model: 220 | F200 | F200-H 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: 73-20-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1730 AD NUMBER: 73-20-08 SUBJECT HEADING: UNIVAIR AIRCRAFT CORPORATION (formerly Koppers) Models F200, F200H, and 220 Propellers ACTION: SUMMARY: DATES: Effective October 4, 1973. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 73-20-08 UNIVAIR AIRCRAFT CORPORATION (formerly Koppers): Amendment 39-1730. Applies to all propeller blades eligible in Models F200, F200H, and 220 propellers. Compliance: Required after receipt of this Airworthiness Directive and before further flight unless already accomplished. The inspection specified in (a) below must be performed. Propeller blades found to have defective tipping must be repaired or replaced before further flight. Propeller blades found to have the late style one piece tipping, but which have no apparent defects must be returned to Univair Aircraft Corporation, Route 3, Box 59, Aurora, Colorado 80010, within the next 25 hours of flight for inspection and rework or replacement as found necessary. (a) Visually inspect the propeller blade tipping for evidence of loosening, loose rivets or deteriorated wood under the tipping. Measure the distance from the blade tipping outboard end to the first relief cut in the stainless steel tipping material inboard from the tip. Blades on which there is no relief cut in the stainless steel tipping material in the first five and one-half (5 1/2) inches inboard from the tip have the late style, one piece tipping installed. Service Bulletin No. 29 on this same subject is available from Univair Aircraft Corporation, Route 3, Box 59, Aurora, Colorado 80010. This amendment becomes effective October 4, 1973. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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