AD 88-04-07
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 100 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-80 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-88 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-90 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A80-8800 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-A90 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 65-B80 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 70 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 99 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | 99A | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | A100 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | A65 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | A65-8200 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | A99A | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | B100 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | B90 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | B99 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | C90 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
| aircraft | Textron Aviation Inc. | E90 | Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes |
Unsafe Condition
Failure of the wing lower forward spar attachment due to possible cracks in Inconel nuts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect each Inconel nut in the lower forward wing spar attachments per Beech Service Bulletin No. 2248. If cracks are found, replace the nut with specially marked Part No. 81790-1414 nut per Figure 2 of the Service Bulletin. Return cracked nuts to Beech Aircraft Corporation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Required prior to further flight after receipt of this AD unless already accomplished.
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Affected Aircraft
Beech Models 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100, B100 with Inconel bolts and nuts in the wing lower forward spar attachments and not equipped with Integral Fitting Spar Kits 90-4077-1S, 99-4023-1S, or 100-4007-1S. Specific serial ranges include L-1, L-2, L-6, LF-7, LF-8, LC-1 to LC-335; LB-1 to LB-35; LD-1 to LD-511; LP-1 to LP-47; LJ-1 to LJ-1087 (except LJ-1085); LW-1 to LW-347; U-1 to U-164 (except U-50); B-1 to B-247; BE-2 to BE-137.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Wing Spar Nuts Inspection
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_88-04-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-04-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65...Show more Subject: Wing Spar Nuts Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/18/1988 Make: Textron Aviation Inc. Model: 100 | 65 | 65-80 | 65-88 | 65-90 | 65-A80 | 65-A80-8800 | 65-A90 | 65-B80 | 70 | 99 | 99A | A100 | A...Show more 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: 88-04-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5892 AD NUMBER: 88-04-07 SUBJECT HEADING: Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes ACTION: SUMMARY: DATES: Effective April 18, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-04-07 BEECH: Amendment 39-5892. Applies to the following Models and serial numbered airplanes, certificated in any category, equipped with Inconel bolts and nuts in the wing lower forward spar attachments, and which have not installed Integral Fitting Spar Kit No. 90-4077-1S or 99-4023-1S or 100-4007-1S. MODELS SERIAL NUMBERS 65, A65, A65-8200 L-1, L-2, L-6, LF-7, LF-8 and LC-1 through LC-335 70 LB-1 through LB-35 65-80, 65-A80, LD-1 through LD-511 65-A80-8800, and 65-B80 65-88 LP-1 through LP-47 65-90, 65-A90, B90, and C90 LJ-1 through LJ-1087 (except LJ-1085) E90 LW-1 through LW-347 99, 99A, A99A, and B99 U-1 through U-164 (except U-50) 100 and A100 B-1 through B-247 B100 BE-2 through BE-137 NOTE: Queen Air Model 65, 70, 80, and 88 airplanes were not factory approved for field installation of Inconel wing attachment hardware, however, some of these airplanes may have had Inconel hardware installed by field approval. Compliance: Required prior to further flight after receipt of this AD unless already accomplished. To prevent possible failure of the wing lower forward spar attachment, accomplish the following: (a) Visually inspect each Inconel nut in the lower forward wing spar attachments in accordance with the instructions in Beech Service Bulletin No. 2248, dated February 1988. If no cracks are found, return the airplane to service. (b) If a crack in any nut is found, prior to further flight replace the nut with a specially marked Part No. 81790-1414 nut per Figure 2 of the above referenced Service Bulletin. (c) This AD does not apply if each affected nut has been replaced by a specially marked Part No. 81790-1414 nut per Figure 2 of the above referenced Service Bulletin. (d) Return cracked nuts to Beech Aircraft Corporation, Commercial Service, Department 52, P.O. Box 85, Wichita, Kansas 67201-0085. (e) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD can be accomplished. (f) An equivalent method of compliance with this AD, if used, must be approved by the Manager, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone (316) 946-4400. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Beech Aircraft Corporation, Commercial Service, Department 52, Wichita, Kansas 67201-0085, or these documents may be examined at the FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-5892, becomes effective on April 18, 1988 to all persons except those to whom it has already been made effective by priority letter from the FAA dated February 24, 1988, and is identified as AD 88-04-07. FOOTER:
Document Text
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AD Final Rules - DRS_88-04-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-04-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65...Show more Subject: Wing Spar Nuts Inspection Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/18/1988 Make: Textron Aviation Inc. Model: 100 | 65 | 65-80 | 65-88 | 65-90 | 65-A80 | 65-A80-8800 | 65-A90 | 65-B80 | 70 | 99 | 99A | A100 | A...Show more 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: 88-04-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5892 AD NUMBER: 88-04-07 SUBJECT HEADING: Airworthiness Directives; Beech Model 65, A65, A65-8200, 70, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, B90, C90, E90, 99, 99A, A99A, B99, 100, A100 and B100 Airplanes ACTION: SUMMARY: DATES: Effective April 18, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-04-07 BEECH: Amendment 39-5892. Applies to the following Models and serial numbered airplanes, certificated in any category, equipped with Inconel bolts and nuts in the wing lower forward spar attachments, and which have not installed Integral Fitting Spar Kit No. 90-4077-1S or 99-4023-1S or 100-4007-1S. MODELS SERIAL NUMBERS 65, A65, A65-8200 L-1, L-2, L-6, LF-7, LF-8 and LC-1 through LC-335 70 LB-1 through LB-35 65-80, 65-A80, LD-1 through LD-511 65-A80-8800, and 65-B80 65-88 LP-1 through LP-47 65-90, 65-A90, B90, and C90 LJ-1 through LJ-1087 (except LJ-1085) E90 LW-1 through LW-347 99, 99A, A99A, and B99 U-1 through U-164 (except U-50) 100 and A100 B-1 through B-247 B100 BE-2 through BE-137 NOTE: Queen Air Model 65, 70, 80, and 88 airplanes were not factory approved for field installation of Inconel wing attachment hardware, however, some of these airplanes may have had Inconel hardware installed by field approval. Compliance: Required prior to further flight after receipt of this AD unless already accomplished. To prevent possible failure of the wing lower forward spar attachment, accomplish the following: (a) Visually inspect each Inconel nut in the lower forward wing spar attachments in accordance with the instructions in Beech Service Bulletin No. 2248, dated February 1988. If no cracks are found, return the airplane to service. (b) If a crack in any nut is found, prior to further flight replace the nut with a specially marked Part No. 81790-1414 nut per Figure 2 of the above referenced Service Bulletin. (c) This AD does not apply if each affected nut has been replaced by a specially marked Part No. 81790-1414 nut per Figure 2 of the above referenced Service Bulletin. (d) Return cracked nuts to Beech Aircraft Corporation, Commercial Service, Department 52, P.O. Box 85, Wichita, Kansas 67201-0085. (e) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD can be accomplished. (f) An equivalent method of compliance with this AD, if used, must be approved by the Manager, Wichita Aircraft Certification Office, FAA, 1801 Airport Road, Room 100, Wichita, Kansas 67209; telephone (316) 946-4400. All persons affected by this directive may obtain copies of the documents referred to herein upon request to Beech Aircraft Corporation, Commercial Service, Department 52, Wichita, Kansas 67201-0085, or these documents may be examined at the FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-5892, becomes effective on April 18, 1988 to all persons except those to whom it has already been made effective by priority letter from the FAA dated February 24, 1988, and is identified as AD 88-04-07. FOOTER:
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Retrieved: Apr 8, 2026
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