AD 81-07-06
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | A-65-1 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-12 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-12F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-12FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-12J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-14 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-14F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-14FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-14J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-3 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-6 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-6J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-7 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-8 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-8F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-8FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-8J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-9 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-9F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-9FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A-65-9J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A100-1 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A100-2 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-3 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-6 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-6J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-8 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-8F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-8FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-8J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-9 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | A75-9J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C-125-1 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C-125-2 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-12F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-12FH | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-12FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-12FP | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-14F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-14FH | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-14FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-16F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-8F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C90-8FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | O-200-A | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | O-200-B | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | O-200-C | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-12F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-12FH | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-12FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-12J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-15 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-8F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-8FHJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C75-8FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-12F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-12FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-12J | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-14F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-15 | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-15F | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-8FHJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
| engine | Continental Motors | C85-8FJ | TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines |
Unsafe Condition
Fuel starvation due to fuel flow restriction through the pump screen caused by contamination or corrosion of the fuel pump and screen.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove safety wire and bolt from fuel pump top cover, discard fiber washer. Remove top cover and cork gasket. Remove and inspect fuel pump screen and pump for contamination or corrosion. Clean or replace damaged components with specified parts. Reinstall screen, cover with new gaskets, torque bolt, resafety wire, and record maintenance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date (April 1, 1981) or within the next 25 hours time in service after the effective date, whichever occurs first, unless already accomplished within the last 12 months and at intervals not to exceed 12 months after the last inspection.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Teledyne Continental Motors models A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines with AC fuel pumps (TCM part numbers 40585, 40695, or 631391 installed).
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
AC Fuel Pumps
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_81-07-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-07-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines Subject: AC Fuel Pumps Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/01/1981 Make: Continental Motors Model: A-65-1 | A-65-12 | A-65-12F | A-65-12FJ | A-65-12J | A-65-14 | A-65-14F | A-65-14FJ | A-65-14J | A-6...Show more Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 81-07-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4071 AD NUMBER: 81-07-06 SUBJECT HEADING: TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines ACTION: SUMMARY: DATES: Effective April 1, 1981. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-07-06 TELEDYNE CONTINENTAL MOTORS: Amendment 39-4071. Applies to Continental A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines with AC fuel pumps, TCM part number 40585, 40695 or 631391 installed. Compliance required within 30 days after the effective date of this AD, or within the next 25 hours time in service after the effective date of this AD, whichever occurs first, unless already accomplished within the last 12 months and at intervals not to exceed 12 months after the last inspection. To prevent fuel starvation due to fuel flow restriction through the pump screen accomplish the following: a. Remove safety wire and bolt from fuel pump top cover. Discard fiber washer under bolt. b. Remove the fuel pump top cover. Discard cork cover gasket. c. Remove fuel pump screen. d. Inspect the fuel pump and fuel pump screen for contamination. (1) If contaminated, clean fuel pump and fuel pump screen. (2) If fuel pump is damaged by corrosion, replace with an applicable serviceable fuel pump. (3) If fuel pump screen is damaged by corrosion or handling, replace with a serviceable fuel pump screen, TCM P/N 643913. e. Reinstall fuel pump screen, fuel pump cover with new cork cover gasket, TCM P/N 643915 and new bolt gasket P/N 643914. Torque bolt to 30 ñ 5 inch-pounds. f. Resafety wire fuel pump top cover bolt and check for leaks. g. Make the appropriate maintenance record entry. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. Teledyne Continental Motors Service Bulletin M81-8, dated March 9, 1981, pertains to this subject. This amendment becomes effective April 1, 1981. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_81-07-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-07-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines Subject: AC Fuel Pumps Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/01/1981 Make: Continental Motors Model: A-65-1 | A-65-12 | A-65-12F | A-65-12FJ | A-65-12J | A-65-14 | A-65-14F | A-65-14FJ | A-65-14J | A-6...Show more Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 81-07-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4071 AD NUMBER: 81-07-06 SUBJECT HEADING: TELEDYNE CONTINENTAL MOTORS Model A-65, A75, C75, C85, C90, A-100, C125, and O-200 Series Engines ACTION: SUMMARY: DATES: Effective April 1, 1981. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-07-06 TELEDYNE CONTINENTAL MOTORS: Amendment 39-4071. Applies to Continental A-65, A75, C75, C85, C90, A-100, C125, and O-200 series engines with AC fuel pumps, TCM part number 40585, 40695 or 631391 installed. Compliance required within 30 days after the effective date of this AD, or within the next 25 hours time in service after the effective date of this AD, whichever occurs first, unless already accomplished within the last 12 months and at intervals not to exceed 12 months after the last inspection. To prevent fuel starvation due to fuel flow restriction through the pump screen accomplish the following: a. Remove safety wire and bolt from fuel pump top cover. Discard fiber washer under bolt. b. Remove the fuel pump top cover. Discard cork cover gasket. c. Remove fuel pump screen. d. Inspect the fuel pump and fuel pump screen for contamination. (1) If contaminated, clean fuel pump and fuel pump screen. (2) If fuel pump is damaged by corrosion, replace with an applicable serviceable fuel pump. (3) If fuel pump screen is damaged by corrosion or handling, replace with a serviceable fuel pump screen, TCM P/N 643913. e. Reinstall fuel pump screen, fuel pump cover with new cork cover gasket, TCM P/N 643915 and new bolt gasket P/N 643914. Torque bolt to 30 ñ 5 inch-pounds. f. Resafety wire fuel pump top cover bolt and check for leaks. g. Make the appropriate maintenance record entry. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. Teledyne Continental Motors Service Bulletin M81-8, dated March 9, 1981, pertains to this subject. This amendment becomes effective April 1, 1981. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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