AD 47-34-01

final rule

Airworthiness Directives; Beech Model D18C and D18S Airplanes

AD Number
47-34-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
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Superseded AD: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Superseded By: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.