AD 65-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 23 | Airworthiness Directives; BEECH Model 23 Aircraft |
Unsafe Condition
Water entering the static lines through the fuselage static air ports could cause a system malfunction.
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Required Actions
Remove the tee fitting from the static line connection, connect a 52-inch length of 0.25-inch O.D. by 0.040-inch wall polyethylene tubing with a 262-P-1/4 union, place the pack nut and plastic ferrule on the tubing's other end, connect the tee fitting, remove original clips and attach the static line to the bulkhead, shorten tubing for gentle curves to prevent water trapping, and reconnect shortened lines to the tee using original or new parts.
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Compliance Time
within 100 hours' time in service after the effective date of this AD
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Affected Aircraft
BEECH Model 23 Aircraft Serial Numbers M-1 through M-334 except M-62
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Federal Register Abstract
Instrument Static System
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_65-11-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-11-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Model 23 Aircraft Subject: Instrument Static System Status: Current Citation: Federal Register: May 20, 1965 Citation Publish Date: 05/20/1965 Effective Date: 06/19/1965 Make: Textron Aviation Inc. Model: 23 Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 65-11-01 CITATION: [Federal Register: May 20, 1965] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-67 AD NUMBER: 65-11-01 SUBJECT HEADING: Airworthiness Directives; BEECH Model 23 Aircraft ACTION: SUMMARY: DATES: Effective June 19, 1965. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-11-01 BEECH: Amdt. 39-67 Part 39 Federal Register May 20, 1965. Applies to Model 23 Aircraft Serial Numbers M-1 through M-334 except M-62. Compliance required within 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent water from entering the static lines through the fuselage static air ports and causing a system malfunction, accomplish the following or an FAA-approved equivalent: (a) Remove the tee fitting from the static line connection just aft of the rear cabin bulkhead. (b) Connect a 52-inch length of 0.25-inch O.D. by 0.040-inch wall polyethylene tubing to the static line running under the floorboard with a 262-P-1/4 union. (c) Place the pack nut and plastic ferrule not used with the union on the other end of the tubing and connect the tee fitting. (d) Remove the clips which originally secured the static lines to the cabin bulkhead and use one to attach the static line to the top of the bulkhead just aft of the cabin bulkhead Station 239.00. (e) Shorten the tubing from each static port to provide gentle curves and to prevent any low places in the line that could trap water between the static ports and the tee. Reconnect the two shortened static port lines to the tee fitting using either the original plastic ferrules and pack nuts or new like parts. (Beech Service Bulletin No. 7 covers this same subject.) This directive effective June 19, 1965. FOOTER:
Document Text
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AD Final Rules - DRS_65-11-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 65-11-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Model 23 Aircraft Subject: Instrument Static System Status: Current Citation: Federal Register: May 20, 1965 Citation Publish Date: 05/20/1965 Effective Date: 06/19/1965 Make: Textron Aviation 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: 65-11-01 CITATION: [Federal Register: May 20, 1965] PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-67 AD NUMBER: 65-11-01 SUBJECT HEADING: Airworthiness Directives; BEECH Model 23 Aircraft ACTION: SUMMARY: DATES: Effective June 19, 1965. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 65-11-01 BEECH: Amdt. 39-67 Part 39 Federal Register May 20, 1965. Applies to Model 23 Aircraft Serial Numbers M-1 through M-334 except M-62. Compliance required within 100 hours' time in service after the effective date of this AD, unless already accomplished. To prevent water from entering the static lines through the fuselage static air ports and causing a system malfunction, accomplish the following or an FAA-approved equivalent: (a) Remove the tee fitting from the static line connection just aft of the rear cabin bulkhead. (b) Connect a 52-inch length of 0.25-inch O.D. by 0.040-inch wall polyethylene tubing to the static line running under the floorboard with a 262-P-1/4 union. (c) Place the pack nut and plastic ferrule not used with the union on the other end of the tubing and connect the tee fitting. (d) Remove the clips which originally secured the static lines to the cabin bulkhead and use one to attach the static line to the top of the bulkhead just aft of the cabin bulkhead Station 239.00. (e) Shorten the tubing from each static port to provide gentle curves and to prevent any low places in the line that could trap water between the static ports and the tee. Reconnect the two shortened static port lines to the tee fitting using either the original plastic ferrules and pack nuts or new like parts. (Beech Service Bulletin No. 7 covers this same subject.) This directive effective June 19, 1965. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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