AD 75-09-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 337 | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337A | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337B | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337C | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337D | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337E | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337F | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337G | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
| aircraft | Cessna Aircraft Company | 337H | Airworthiness Directives; CESSNA Model 337 Series Aircraft |
Unsafe Condition
Possibility of unreliable airspeed indications due to ice formation in the pitot system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Rework the extended pitot tube by installing Robertson Kit No. 14-118-100 in accordance with Robertson modification instructions No. 14-118-10 dated January 23, 1975, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours of operation after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Model 337 series aircraft modified in accordance with Robertson Aircraft Corporation STC SA1627WE, including specific serial numbers listed in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Pitot System
Applicability Source Text
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AD Final Rules - DRS_75-09-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-09-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 337 Series Aircraft Subject: Pitot System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/22/1975 Make: Cessna Aircraft Company Model: 337 | 337A | 337B | 337C | 337D | 337E | 337F | 337G | 337H 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: 75-09-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2177 AD NUMBER: 75-09-05 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 337 Series Aircraft ACTION: SUMMARY: DATES: Effective April 22, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-09-05 CESSNA: Amendment 39-2177. Applies to the following Model 337 series aircraft modified in accordance with Robertson Aircraft Corporation STC SA1627WE, certificated in all categories. 337-0058, 337-0063, 337-0124, 337-0205, 337-0220, 337-0291, 337-0305, 337-0327, 337-0332, 337-0443, 337-0502, 337-0540, 337-0549, 337-0566, 337-0577, 337-0685, 337-0695, 337-0726, 337-0728, 337-0732, 337-0741, 337-0817, 337-0822, 337-0836, 337-0880, 337-0882, 337-0896, 337-0916, 337-0925, 337-0929, 337-0938, 337-0942, 337-0946, 337-0947, 337-0959, 337-0963, 337-0970, 337-0977, 337-0992, 337-0996, 337-1019, 337-1036, 337-1044, 337-1052, 337-1062, 337-1072, 337-1073, 337-1079, 337-1082, 337-1091, 337-1108, 337-1118, 337-1124, 337-1139, 337-1154, 337-1159, 337-1162, 337-1175, 337-1177, 337-1180, 337-1192, 337-1210, 337-1232, 337-1258, 337-1262, 337-1274, 337-1276, 337-1303, 337-1307 Compliance required as indicated unless already accomplished. To prevent the possibility of unreliable airspeed indications due to ice formation in the pitot system, accomplish the following: Unless already accomplished, within the next 100 hours of operation after the effective date of this AD, rework the extended pitot tube by installation of Robertson Kit No. 14-118-100 in accordance with Robertson modification instructions No. 14-118-10 dated January 23, 1975, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Robertson Aircraft Corporation, 839 West Perimeter Road, Renton, Washington 98055. The documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington. This amendment becomes effective April 22, 1975. FOOTER:
Document Text
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AD Final Rules - DRS_75-09-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 75-09-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 337 Series Aircraft Subject: Pitot System Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/22/1975 Make: Cessna Aircraft Company Model: 337 | 337A | 337B | 337C | 337D | 337E | 337F | 337G | 337H 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: 75-09-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2177 AD NUMBER: 75-09-05 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 337 Series Aircraft ACTION: SUMMARY: DATES: Effective April 22, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 75-09-05 CESSNA: Amendment 39-2177. Applies to the following Model 337 series aircraft modified in accordance with Robertson Aircraft Corporation STC SA1627WE, certificated in all categories. 337-0058, 337-0063, 337-0124, 337-0205, 337-0220, 337-0291, 337-0305, 337-0327, 337-0332, 337-0443, 337-0502, 337-0540, 337-0549, 337-0566, 337-0577, 337-0685, 337-0695, 337-0726, 337-0728, 337-0732, 337-0741, 337-0817, 337-0822, 337-0836, 337-0880, 337-0882, 337-0896, 337-0916, 337-0925, 337-0929, 337-0938, 337-0942, 337-0946, 337-0947, 337-0959, 337-0963, 337-0970, 337-0977, 337-0992, 337-0996, 337-1019, 337-1036, 337-1044, 337-1052, 337-1062, 337-1072, 337-1073, 337-1079, 337-1082, 337-1091, 337-1108, 337-1118, 337-1124, 337-1139, 337-1154, 337-1159, 337-1162, 337-1175, 337-1177, 337-1180, 337-1192, 337-1210, 337-1232, 337-1258, 337-1262, 337-1274, 337-1276, 337-1303, 337-1307 Compliance required as indicated unless already accomplished. To prevent the possibility of unreliable airspeed indications due to ice formation in the pitot system, accomplish the following: Unless already accomplished, within the next 100 hours of operation after the effective date of this AD, rework the extended pitot tube by installation of Robertson Kit No. 14-118-100 in accordance with Robertson modification instructions No. 14-118-10 dated January 23, 1975, or later FAA approved revisions, or in a manner approved by the Chief, Engineering and Manufacturing Branch, FAA Northwest Region. The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Robertson Aircraft Corporation, 839 West Perimeter Road, Renton, Washington 98055. The documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington. This amendment becomes effective April 22, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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