AD 66-02-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 56TC | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-80 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-88 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-90 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A80 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A80-8800 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| aircraft | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 56TC | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-80 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-88 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-90 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A80 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A80-8800 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90-1 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90-2 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90-3 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-A90-4 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 65-B80 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | Air Conditioners | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3-G102 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3-G102A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3-G103A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3-G202A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3A-S1C3G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3A-S1CG | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3A-S4C4G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3A-SC3G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3A-SCG | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3C-R-1830-90C | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3C-S1C3G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3C-S4C4G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3C-SC3G | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | DC3D-R-1830-90C | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 18A | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 18D | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 18S (Army C-45C) | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 50 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58P | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58PA | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58TC | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 58TCA | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | 18 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
| appliance | Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners |
Unsafe Condition
Failure of the compressor motor fan in the Model BAK-109 air conditioner.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the compressor motor fan in accordance with Beech Service Bulletin No. 65-4 dated March 1965.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours' time in service after the effective date of this AD unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All airplanes equipped with Model BAK-109 air conditioners, including but not limited to Beech Models 18, 50, 65 Series; Douglas Model DC3; Lockheed Model 18; Viscount Models 744, 745D and 810 Series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Air Conditioners
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_66-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners Subject: Air Conditioners Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/10/1966 Make: Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Ar...Show more Model: 56TC | 58 | 58A | 65 | 65-80 | 65-88 | 65-90 | 65-A80 | 65-A80-8800 | 65-A90 | 65-A90-1 | 65-A90-2 |...Show more Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 66-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-179 AD NUMBER: 66-02-01 SUBJECT HEADING: Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners ACTION: SUMMARY: DATES: Effective February 10, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-02-01 BEECHCRAFT: Amendment 39-179 Part 39 Federal Register January 8, 1966. Applies to all Airplanes Equipped with Model BAK-109 Air Conditioners. Compliance required within the next 100 hours' time in service after the effective date of this AD unless already accomplished. To prevent further failures of the compressor motor fan, replace the fan in accordance with Beech Service Bulletin No. 65-4 dated March 1965. NOTE: The Beechcraft Model BAK-109 Air Conditioner is known to be installed in, but not limited to, Beech Models 18, 50, 65 Series; Douglas Model DC3; Lockheed Model 18; Viscount Models 744, 745D and 810 Series airplanes. This directive effective February 10, 1966. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_66-02-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-02-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners Subject: Air Conditioners Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/10/1966 Make: Beechcraft | Textron Aviation Inc. | The Boeing Company | Lockheed Aircraft Corporation | Vickers-Ar...Show more Model: 56TC | 58 | 58A | 65 | 65-80 | 65-88 | 65-90 | 65-A80 | 65-A80-8800 | 65-A90 | 65-A90-1 | 65-A90-2 |...Show more Product Type: Appliance Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 66-02-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-179 AD NUMBER: 66-02-01 SUBJECT HEADING: Airworthiness Directives; Beechcraft: Applies To All Airplanes Equipped With Model BAK-109 Air Conditioners ACTION: SUMMARY: DATES: Effective February 10, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-02-01 BEECHCRAFT: Amendment 39-179 Part 39 Federal Register January 8, 1966. Applies to all Airplanes Equipped with Model BAK-109 Air Conditioners. Compliance required within the next 100 hours' time in service after the effective date of this AD unless already accomplished. To prevent further failures of the compressor motor fan, replace the fan in accordance with Beech Service Bulletin No. 65-4 dated March 1965. NOTE: The Beechcraft Model BAK-109 Air Conditioner is known to be installed in, but not limited to, Beech Models 18, 50, 65 Series; Douglas Model DC3; Lockheed Model 18; Viscount Models 744, 745D and 810 Series airplanes. This directive effective February 10, 1966. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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