AD 78-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 19A | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | 23 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A23 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A23-19 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A23-24 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A23A | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A24 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | A24R | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | B19 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | B23 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | B24R | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | C23 | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
| aircraft | Textron Aviation Inc. | C24R | Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes |
Unsafe Condition
Failure of the wing flap control weld assembly and resulting possible unwanted in-flight retraction of the wing flaps.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove flap control weld assembly and install Beech P/N 169-524024-85 flap control weld assembly. Any equivalent means of compliance must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 50 hours time-in-service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BEECH Models 23, A23, A23A, B23, C23 (M-1 through M-1979); A23-19, 19A, B19 (MB-1 through MB-866); A23-24, A24 (MA-1 through MA-368); A24R, B24R, C24R (MC-2 through MC-536)
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Wing Flap Control
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_78-04-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-04-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R...Show more Subject: Wing Flap Control Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1978 Make: Textron Aviation Inc. Model: 19A | 23 | A23 | A23-19 | A23-24 | A23A | A24 | A24R | B19 | B23 | B24R | C23 | C24R 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: 78-04-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3139 AD NUMBER: 78-04-01 SUBJECT HEADING: Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes ACTION: SUMMARY: DATES: Effective February 20, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-04-01 BEECH: Amendment 39-3139. Applies to the following models and serial number airplanes, equipped with manually operated wing flaps, certificated in all categories: MODEL SERIAL NUMBERS 23, A23, A23A, B23, and C23 M-1 through M-1979 A23-19, 19A and B19 MB-1 through MB-866 A23-24 and A24 MA-1 through MA-368 A24R, B24R AND C24R MC-2 through MC-536 COMPLIANCE: Required a indicated unless already accomplished. To prevent failure of the wing flap control weld assembly and resulting possible unwanted in-flight retraction of the wing flaps, within the next 50 hours time-in-service after the effective date of this AD, accomplish the following in accordance with Beechcraft Service Instructions No. 0940 or later approved revisions: A) Remove flap control weld assembly and install Beech P/N 169-524024-85 flap control weld assembly. B) Any equivalent means of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective on February 20, 1978. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_78-04-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 78-04-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R...Show more Subject: Wing Flap Control Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 02/20/1978 Make: Textron Aviation Inc. Model: 19A | 23 | A23 | A23-19 | A23-24 | A23A | A24 | A24R | B19 | B23 | B24R | C23 | C24R 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: 78-04-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3139 AD NUMBER: 78-04-01 SUBJECT HEADING: Airworthiness Directives; BEECH Models 23, A23, A23A, B23, C23, A23-19, 19A, B19, A23-24, A24, A24R, B24R and C24R Airplanes ACTION: SUMMARY: DATES: Effective February 20, 1978. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 78-04-01 BEECH: Amendment 39-3139. Applies to the following models and serial number airplanes, equipped with manually operated wing flaps, certificated in all categories: MODEL SERIAL NUMBERS 23, A23, A23A, B23, and C23 M-1 through M-1979 A23-19, 19A and B19 MB-1 through MB-866 A23-24 and A24 MA-1 through MA-368 A24R, B24R AND C24R MC-2 through MC-536 COMPLIANCE: Required a indicated unless already accomplished. To prevent failure of the wing flap control weld assembly and resulting possible unwanted in-flight retraction of the wing flaps, within the next 50 hours time-in-service after the effective date of this AD, accomplish the following in accordance with Beechcraft Service Instructions No. 0940 or later approved revisions: A) Remove flap control weld assembly and install Beech P/N 169-524024-85 flap control weld assembly. B) Any equivalent means of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region. This amendment becomes effective on February 20, 1978. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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