AD 71-18-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 172 | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172A | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172B | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172C | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172D | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172E | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172F (USAF T-41A) | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172G | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172H (USAF T-41A) | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172I | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172K | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172L | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172M | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172N | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172P | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172Q | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172R | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172RG | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
| aircraft | Cessna Aircraft Company | 172S | Airworthiness Directives; CESSNA Model 172 Series Airplanes |
Unsafe Condition
Incorrect fuel tank capacity information on the fuel selector valve placard and fuel filler neck markings could lead to improper fuel management and potential fuel exhaustion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove existing fuel selector valve placard and install either Cessna P/N 0511167-20 or 0500246-11 placard per Cessna Service Letter SE 68-12 or FAA-approved equivalent. Revise fuel filler neck markings to 'FUEL 80/87 GRADE. TOTAL CAPACITY 19.5 GALLONS' using minimum 1/8 inch letters.
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
Cessna Model 172 series airplanes with serial numbers 17248735 through 17256512
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Selector Valve Placard
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 172 Series Airplanes Subject: Fuel Selector Valve Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/31/1971 Make: Cessna Aircraft Company Model: 172 | 172A | 172B | 172C | 172D | 172E | 172F (USAF T-41A) | 172G | 172H (USAF T-41A) | 172I | 172K ...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: 71-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1275 AD NUMBER: 71-18-01 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 172 Series Airplanes ACTION: SUMMARY: DATES: Effective August 31, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-18-01 CESSNA: Amendment 39-1275. Applies to 172 series airplanes (S/N 17248735 through 17256512). To provide correct information concerning fuel tank capacities, within the next 50 hours' time in service after the effective date of this AD, unless already accomplished, perform the following: A) Remove the existing placard on the fuel selector valve and install in its place either applicable Cessna P/N 0511167-20 placard or Cessna P/N 0500246-11 placard in accordance with Cessna Service Letter SE 68-12 dated March 12, 1968, or later FAA-approved revision, or any FAA-approved equivalent placard which would show usable fuel capacity of 18 gallons left tank, 18 gallons right tank, 36 gallons both and an off position. B) Revise the existing markings at the fuel filler necks to read: "FUEL 80/87 GRADE. TOTAL CAPACITY 19.5 GALLONS". (The operator may make and install the above markings with painted markings, using a minimum of 1/8 inch high letters.) This amendment becomes effective August 31, 1971. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_71-18-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-18-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CESSNA Model 172 Series Airplanes Subject: Fuel Selector Valve Placard Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/31/1971 Make: Cessna Aircraft Company Model: 172 | 172A | 172B | 172C | 172D | 172E | 172F (USAF T-41A) | 172G | 172H (USAF T-41A) | 172I | 172K ...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: 71-18-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1275 AD NUMBER: 71-18-01 SUBJECT HEADING: Airworthiness Directives; CESSNA Model 172 Series Airplanes ACTION: SUMMARY: DATES: Effective August 31, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-18-01 CESSNA: Amendment 39-1275. Applies to 172 series airplanes (S/N 17248735 through 17256512). To provide correct information concerning fuel tank capacities, within the next 50 hours' time in service after the effective date of this AD, unless already accomplished, perform the following: A) Remove the existing placard on the fuel selector valve and install in its place either applicable Cessna P/N 0511167-20 placard or Cessna P/N 0500246-11 placard in accordance with Cessna Service Letter SE 68-12 dated March 12, 1968, or later FAA-approved revision, or any FAA-approved equivalent placard which would show usable fuel capacity of 18 gallons left tank, 18 gallons right tank, 36 gallons both and an off position. B) Revise the existing markings at the fuel filler necks to read: "FUEL 80/87 GRADE. TOTAL CAPACITY 19.5 GALLONS". (The operator may make and install the above markings with painted markings, using a minimum of 1/8 inch high letters.) This amendment becomes effective August 31, 1971. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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