AD 47-33-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | D18C | Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes |
| aircraft | Textron Aviation Inc. | D18C-T | Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes |
| aircraft | Textron Aviation Inc. | D18S | Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes |
Unsafe Condition
The present alternate static source does not comply with the Civil Air Regulations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the static selector valve and connect the AN 6270-4-22 flexible hose to the Beech 407-184756 static pressure tube using an 815-4D union.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to October 15, 1947
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Affected Aircraft
Beech Models D18S, D18C, and D18C-T airplanes with Static Alternate Source Selector Valve.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Alternate Static Source
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-33-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-33-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes Subject: Alternate Static Source Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: D18C | D18C-T | D18S Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-33-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-33-07 SUBJECT HEADING: Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-33-07 BEECH: (Was Mandatory Note 2 of AD-770-1 and Mandatory Note 3 of AD- 765-1.) Applies to D18S, D18C and D18C-T Airplanes With Static Alternate Source Selector Valve. Compliance required prior to October 15, 1947. The present alternate static source does not comply with the Civil Air Regulations. The static selector valve should be removed and the AN 6270-4-22 flexible hose connected to the Beech 407-184756 static pressure tube by means of an 815-4D union. (Beech Service Bulletin D18-47 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-33-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-33-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes Subject: Alternate Static Source Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: D18C | D18C-T | D18S 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: 47-33-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-33-07 SUBJECT HEADING: Airworthiness Directives; Beech Models D18S, D18C and D18C-T Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-33-07 BEECH: (Was Mandatory Note 2 of AD-770-1 and Mandatory Note 3 of AD- 765-1.) Applies to D18S, D18C and D18C-T Airplanes With Static Alternate Source Selector Valve. Compliance required prior to October 15, 1947. The present alternate static source does not comply with the Civil Air Regulations. The static selector valve should be removed and the AN 6270-4-22 flexible hose connected to the Beech 407-184756 static pressure tube by means of an 815-4D union. (Beech Service Bulletin D18-47 covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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