AD 47-34-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | D18C | Airworthiness Directives; Beech Model D18C and D18S Airplanes |
| aircraft | Textron Aviation Inc. | D18S | Airworthiness Directives; Beech Model D18C and D18S Airplanes |
Unsafe Condition
Failure of the cam or expansion type filler cap to secure properly, leading to fuel leakage and potential fire hazard during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install new filler neck, gasket, and screws suitable for expansion type filler cap; replace filler cap with revised Beech P/N 404-189676; install safety guard P/N 404-189689; drill 1/4-inch hole in nose compartment skin forward of bulkhead No. 2.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to November 1, 1947
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Beech Model D18C and D18S airplanes with inside filler neck on 80-gallon nose fuel tanks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Expansion Type Filler Cap
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-34-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-34-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model D18C and D18S Airplanes Subject: Expansion Type Filler Cap Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: D18C | D18S Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-34-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-34-01 SUBJECT HEADING: Airworthiness Directives; Beech Model D18C and D18S Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-34-01 BEECH: (Was Mandatory Note 2 of AD-765-1.) Applies to D18C and D18S Airplanes Having Inside Filler Neck on 80-Gallon Nose Fuel Tanks. Compliance required prior to November 1, 1947. To prevent flight with the nose tank fuel cap off or unlocked, and to eliminate a fire hazard in the event of fuel tank or cap leakage, the following items are to be accomplished: (a) On tanks equipped with a cam type filler cap, install new filler neck, filler neck gasket, and screws suitable for use with the expansion type filler cap. (Tanks having an expansion type filler cap previously installed do not require this change.) (b) Replace the cam or expansion type filler cap with revised expansion type filler cap assembly, Beech P/N 404-189676. (c) Install a safety guard, Beech P/N 404-189689, on forward side of nose door cover plate in a manner to prevent closing the nose compartment door when the filler cap is not in place or locked. (d) Drill a 1/4-inch diameter hole in the lower skin of the nose compartment just forward of bulkhead No. 2 at the centerline of the airplane to provide drainage for the forward compartment under the fuel tank. (Beech Service Bulletin D18-49 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-34-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-34-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model D18C and D18S Airplanes Subject: Expansion Type Filler Cap Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Textron Aviation Inc. Model: D18C | 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: 47-34-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-34-01 SUBJECT HEADING: Airworthiness Directives; Beech Model D18C and D18S Airplanes ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-34-01 BEECH: (Was Mandatory Note 2 of AD-765-1.) Applies to D18C and D18S Airplanes Having Inside Filler Neck on 80-Gallon Nose Fuel Tanks. Compliance required prior to November 1, 1947. To prevent flight with the nose tank fuel cap off or unlocked, and to eliminate a fire hazard in the event of fuel tank or cap leakage, the following items are to be accomplished: (a) On tanks equipped with a cam type filler cap, install new filler neck, filler neck gasket, and screws suitable for use with the expansion type filler cap. (Tanks having an expansion type filler cap previously installed do not require this change.) (b) Replace the cam or expansion type filler cap with revised expansion type filler cap assembly, Beech P/N 404-189676. (c) Install a safety guard, Beech P/N 404-189689, on forward side of nose door cover plate in a manner to prevent closing the nose compartment door when the filler cap is not in place or locked. (d) Drill a 1/4-inch diameter hole in the lower skin of the nose compartment just forward of bulkhead No. 2 at the centerline of the airplane to provide drainage for the forward compartment under the fuel tank. (Beech Service Bulletin D18-49 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.