AD 65-26-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 23 | Airworthiness Directives; Lear Jet Model 23 Airplanes. |
Unsafe Condition
Improper ducting in the baggage compartment could lead to smoke accumulation in the cabin.
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Required Actions
Remove interior side panels, inspect the one-inch diameter flexible duct to ensure it is high temperature silicone type (reddish color), and replace black ducts with specified parts (P/N 2319148-017 for serial 004-034, P/N 2319148-022 for serial 035 and higher).
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Compliance Time
before further flight
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Affected Aircraft
Learjet Inc. Model 23 airplanes with serial numbers 004 through 034 and 035 and higher.
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Federal Register Abstract
Baggage Compartment
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_65-26-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-26-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Lear Jet Model 23 Airplanes. Subject: Baggage Compartment Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Learjet Inc. Model: 23 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 65-26-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-160 AD NUMBER: 65-26-03 SUBJECT HEADING: Airworthiness Directives; Lear Jet Model 23 Airplanes. ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-26-03 LEARJET: Amdt. 39-160 Part 39 Federal Register November 25, 1965. Applies to Model 23 Airplanes. Compliance required before further flight, unless already accomplished. To eliminate the possibility of smoke accumulation in the cabin due to improper ducting, accomplish the following: (a) Remove necessary interior side panels on right side of baggage compartment near Fuselage Frame 22 (Station 271). (b) Inspect the one-inch diameter flexible duct (Figure 90-11, Lear Parts Catalog) to ensure that it is the high temperature silicone type (reddish color). (c) Replace any black duct with high temperature silicone type (reddish color) duct, P/N 2319148-017 (airplane Serial Numbers 004 through 034), or P/N 2319148-022 (airplane Serial Numbers 035 and higher), before further flight. This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated November 18, 1965. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_65-26-03.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-26-03 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Lear Jet Model 23 Airplanes. Subject: Baggage Compartment Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Learjet Inc. Model: 23 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: 65-26-03 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-160 AD NUMBER: 65-26-03 SUBJECT HEADING: Airworthiness Directives; Lear Jet Model 23 Airplanes. ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-26-03 LEARJET: Amdt. 39-160 Part 39 Federal Register November 25, 1965. Applies to Model 23 Airplanes. Compliance required before further flight, unless already accomplished. To eliminate the possibility of smoke accumulation in the cabin due to improper ducting, accomplish the following: (a) Remove necessary interior side panels on right side of baggage compartment near Fuselage Frame 22 (Station 271). (b) Inspect the one-inch diameter flexible duct (Figure 90-11, Lear Parts Catalog) to ensure that it is the high temperature silicone type (reddish color). (c) Replace any black duct with high temperature silicone type (reddish color) duct, P/N 2319148-017 (airplane Serial Numbers 004 through 034), or P/N 2319148-022 (airplane Serial Numbers 035 and higher), before further flight. This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated November 18, 1965. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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