AD 55-04-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | Federal Skis | 180 | Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis |
| aircraft | Cessna Aircraft Company | Federal Skis | Wheel Skis | Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis |
| appliance | Cessna Aircraft Company | Federal Skis | 180 | Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis |
| appliance | Cessna Aircraft Company | Federal Skis | Wheel Skis | Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis |
Unsafe Condition
The main skis pitch downward against the forward limiting cables during normal flight, causing the airplane to assume a dive attitude with a resulting loss of altitude before recovery.
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Required Actions
Replace the existing mechanical rigger with Federal No. 11G1064-2 mechanical rigger. Install Federal No. 11D1059-5 preloaded bungee assembly in each forward limiting cable and adjust the cables to allow the skis to pitch nose down 12 to 14 degrees without extending the bungee units.
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Compliance Time
as soon as possible but no later than next 100 hour inspection
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Affected Aircraft
All Cessna Model 180 aircraft equipped with Federal Model AWB-2500A Wheel Skis
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Federal Register Abstract
Wheel Skis
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_55-04-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 55-04-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Fed...Show more Subject: Wheel Skis Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company | Federal Skis Model: 180 | Wheel Skis Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 55-04-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 55-04-01 SUBJECT HEADING: Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 55-04-01 FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis. Compliance required as soon as possible but no later than next 100 hour inspection. Instances have been reported of the main skis pitching downward against the forward limiting cables during normal flight causing the airplane to assume a dive attitude with a resulting loss of altitude before recovery. To preclude the possibility of the serious consequences that might result should this condition occur at low altitudes, the following corrective action must be accomplished: 1. Replace the existing mechanical rigger with Federal No. 11G1064-2 mechanical rigger. 2. Install Federal No. 11D1059-5 preloaded bungee assembly in each of forward limiting cables and adjust the cables so that the skis when in the "up" position on the wheel, will be allowed to pitch nose down minus 12 degrees to 14 degrees in flight without extending the bungee units. This angle is measured between the top of the ski channel and the horizontal reference line of the airplane. (Federal Service bulletin No. 102 covers the same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_55-04-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 55-04-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Fed...Show more Subject: Wheel Skis Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Cessna Aircraft Company | Federal Skis Model: 180 | Wheel Skis Product Type: Appliance 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: 55-04-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 55-04-01 SUBJECT HEADING: Airworthiness Directives; FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 55-04-01 FEDERAL SKIS: Applies to All Cessna Model 180 Aircraft Equipped With Federal Model AWB-2500A Wheel Skis. Compliance required as soon as possible but no later than next 100 hour inspection. Instances have been reported of the main skis pitching downward against the forward limiting cables during normal flight causing the airplane to assume a dive attitude with a resulting loss of altitude before recovery. To preclude the possibility of the serious consequences that might result should this condition occur at low altitudes, the following corrective action must be accomplished: 1. Replace the existing mechanical rigger with Federal No. 11G1064-2 mechanical rigger. 2. Install Federal No. 11D1059-5 preloaded bungee assembly in each of forward limiting cables and adjust the cables so that the skis when in the "up" position on the wheel, will be allowed to pitch nose down minus 12 degrees to 14 degrees in flight without extending the bungee units. This angle is measured between the top of the ski channel and the horizontal reference line of the airplane. (Federal Service bulletin No. 102 covers the same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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