AD 48-12-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | C54-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54A-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54B-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54D-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54E-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | C54G-DC | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
| aircraft | The Boeing Company | DC-4 | Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft |
Unsafe Condition
Failure to comply with fire prevention requirements, including installation of smoke detectors, engine section piping revisions, enclosed waste containers, and compliant interior materials may result in uncontained fires in baggage compartments, engine sections, and lavatories.
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Required Actions
Install smoke detectors in belly baggage compartments, revise engine section piping and fittings, install enclosed waste containers in lavatories, and ensure interior materials and finishes comply with CAR 4b requirements.
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Compliance Time
Not later than the dates specified in CAR Amendments 41-3, 42-2, and 61-2 as revised by special Civil Air Regulations Serial Nos. 385, 390, 390A, 390B and any subsequent regulations affecting these compliance dates.
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Affected Aircraft
The Boeing Company C-54 and DC-4 aircraft models: C54-DC, C54A-DC, C54B-DC, C54D-DC, C54E-DC, C54G-DC, DC-4, as specified by Civil Air Regulations Amendments 41-3, 42-2, and 61-2.
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Federal Register Abstract
Fire Prevention Requirements
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-12-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-12-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft Subject: Fire Prevention Requirements Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: C54-DC | C54A-DC | C54B-DC | C54D-DC | C54E-DC | C54G-DC | DC-4 Product Type: Aircraft Product Subtype: Large 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: 48-12-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-12-01 SUBJECT HEADING: Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-12-01 DOUGLAS: Applies to All C-54 and DC-4 Aircraft As Specified by Civil Air Regulations Amendments 41-3, 42-2, and 61-2. To be accomplished not later than the dates specified in the above amendments as revised by special Civil Air Regulations Serial Nos. 385, 390, 390A, 390B and any subsequent regulations affecting these compliance dates. All air carrier aircraft must be modified to comply with the fire prevention requirements as outlined in CAR Amendments 41-3, 42-2, and 61-2. The modifications outlined in the following listed Douglas Service Bulletins and AD 47-42-03 are required for compliance with these amendments. Other modifications shown to be equivalent to those covered by the Service Bulletins will also be acceptable. Service Bulletin No. 62, Install Smoke Detector in Belly Baggage Compartment; Service Bulletin No. 66, Engine Section Piping and Fitting Revision; Service Bulletin No. 69, Installation of Enclosed Waste Container in Lavatory. In addition to the above it will be necessary to ascertain that all interior materials and finishes comply with the applicable sections of CAR 4b. Safety Regulation Release 259 outlines acceptable procedures for complying with these particular requirements. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_48-12-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-12-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft Subject: Fire Prevention Requirements Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: C54-DC | C54A-DC | C54B-DC | C54D-DC | C54E-DC | C54G-DC | DC-4 Product Type: Aircraft Product Subtype: Large 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: 48-12-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-12-01 SUBJECT HEADING: Airworthiness Directives; DOUGLAS C-54 and DC-4 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-12-01 DOUGLAS: Applies to All C-54 and DC-4 Aircraft As Specified by Civil Air Regulations Amendments 41-3, 42-2, and 61-2. To be accomplished not later than the dates specified in the above amendments as revised by special Civil Air Regulations Serial Nos. 385, 390, 390A, 390B and any subsequent regulations affecting these compliance dates. All air carrier aircraft must be modified to comply with the fire prevention requirements as outlined in CAR Amendments 41-3, 42-2, and 61-2. The modifications outlined in the following listed Douglas Service Bulletins and AD 47-42-03 are required for compliance with these amendments. Other modifications shown to be equivalent to those covered by the Service Bulletins will also be acceptable. Service Bulletin No. 62, Install Smoke Detector in Belly Baggage Compartment; Service Bulletin No. 66, Engine Section Piping and Fitting Revision; Service Bulletin No. 69, Installation of Enclosed Waste Container in Lavatory. In addition to the above it will be necessary to ascertain that all interior materials and finishes comply with the applicable sections of CAR 4b. Safety Regulation Release 259 outlines acceptable procedures for complying with these particular requirements. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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