AD 88-20-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | A36 | Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes |
| aircraft | Textron Aviation Inc. | B36TC | Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes |
| aircraft | Textron Aviation Inc. | F33A | Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes |
Unsafe Condition
The Mortell 931 sound deadener material on the aft side of the firewall could cause a potential fire in the cabin.
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Required Actions
Remove the Mortell 931 sound deadener material from the aft side of the firewall per Beech Service Bulletin 2249. Flights may be conducted under FAR 21.197 to a location where this AD can be accomplished. Equivalent compliance may be approved by the FAA Wichita Aircraft Certification Office.
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Compliance Time
within the next 100 hours time-in-service after the effective date of this AD
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Affected Aircraft
Beech Model F33A (serial numbers CE-1162 through CE-1223), A36 (serial numbers E-2383 through E-2405, E-2407 through E-2409), and B36TC (serial numbers EA-468 through EA-470, EA-472 through EA-474)
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Federal Register Abstract
Firewall Material
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_88-20-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-20-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes Subject: Firewall Material Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/19/1988 Make: Textron Aviation Inc. Model: A36 | B36TC | F33A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 88-20-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6017 AD NUMBER: 88-20-01 SUBJECT HEADING: Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes ACTION: SUMMARY: DATES: Effective October 19, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-20-01 BEECH: Amendment 39-6017. Applies to the following airplanes certificated in any category: MODEL SERIAL NUMBER F33A CE-1162 through CE-1223 A36 E-2383 through E-2405 E-2407 through E-2409 B36TC EA-468 through EA-470 EA-472 through EA-474 Compliance: Required within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent a potential fire in the cabin, accomplish the following: (a) Remove the Mortell 931 sound deadener material from the aft side of the firewall in accordance with the instructions in Beech Service Bulletin Number 2249, dated April 1988. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) An equivalent means of compliance with this AD may be used if approved by the Manager, FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; Telephone (316) 946-4400. All persons affected by this directive may obtain copies of this document referred to herein upon request to Beech Aircraft Corporation, Commercial Service, Dept. 52, P.O. Box 85, Wichita, Kansas 67201-0085; or may examine this document at the FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-6017, becomes effective on October 19, 1988. FOOTER:
Document Text
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AD Final Rules - DRS_88-20-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 88-20-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes Subject: Firewall Material Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/19/1988 Make: Textron Aviation Inc. Model: A36 | B36TC | F33A 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: 88-20-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-6017 AD NUMBER: 88-20-01 SUBJECT HEADING: Airworthiness Directives; Beech Model F33A, A36 and B36TC Airplanes ACTION: SUMMARY: DATES: Effective October 19, 1988. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 88-20-01 BEECH: Amendment 39-6017. Applies to the following airplanes certificated in any category: MODEL SERIAL NUMBER F33A CE-1162 through CE-1223 A36 E-2383 through E-2405 E-2407 through E-2409 B36TC EA-468 through EA-470 EA-472 through EA-474 Compliance: Required within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished. To prevent a potential fire in the cabin, accomplish the following: (a) Remove the Mortell 931 sound deadener material from the aft side of the firewall in accordance with the instructions in Beech Service Bulletin Number 2249, dated April 1988. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) An equivalent means of compliance with this AD may be used if approved by the Manager, FAA, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; Telephone (316) 946-4400. All persons affected by this directive may obtain copies of this document referred to herein upon request to Beech Aircraft Corporation, Commercial Service, Dept. 52, P.O. Box 85, Wichita, Kansas 67201-0085; or may examine this document at the FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This amendment, 39-6017, becomes effective on October 19, 1988. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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