# AD 71-18-01: Fuel Selector Valve Placard

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 172, 172A, 172B, 172C, 172D, 172E, 172F (USAF T-41A), 172G, 172H (USAF T-41A), 172I, 172K, 172L and 7 more
- Effective: August 31, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1275
- Registered aircraft: 20,675 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D17CE665960220AD86256A340062F3EA.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-18-01

## The airworthiness directive

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.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A12](https://openairdocs.org/tcds/3A12): Textron Aviation Inc.; names 18 of 18 models: 172F (USAF T-41A), 172M, 172Q, 172R, 172K, 172G, 172A, 172L…
- [TCDS 3A17](https://openairdocs.org/tcds/3A17): Textron Aviation Inc.; names 1 of 12 models: 172RG

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 20,675 (20,675 by airframe model, 0 by engine model)
- Makers: Cessna 19,436, Textron 1,239

Models with the most aircraft:

- [Cessna 172M](https://openairdocs.org/model/cessna-172m): 3,573 aircraft (airframe model)
- [Cessna 172N](https://openairdocs.org/model/cessna-172n): 3,138 aircraft (airframe model)
- [Cessna 172S](https://openairdocs.org/model/cessna-172s): 1,915 aircraft (airframe model)
- [Cessna 172](https://openairdocs.org/model/cessna-172): 1,805 aircraft (airframe model)
- [Textron 172S](https://openairdocs.org/model/textron-172s): 1,239 aircraft (airframe model)
- [Cessna 172P](https://openairdocs.org/model/cessna-172p): 1,111 aircraft (airframe model)
- [Cessna 172K](https://openairdocs.org/model/cessna-172k): 1,026 aircraft (airframe model)
- [Cessna 172L](https://openairdocs.org/model/cessna-172l): 857 aircraft (airframe model)
- [Cessna 172H](https://openairdocs.org/model/cessna-172h): 780 aircraft (airframe model)
- [Cessna 172G](https://openairdocs.org/model/cessna-172g): 722 aircraft (airframe model)
- [Cessna 172F](https://openairdocs.org/model/cessna-172f): 717 aircraft (airframe model)
- [Cessna 172R](https://openairdocs.org/model/cessna-172r): 683 aircraft (airframe model)
- [Cessna 172E](https://openairdocs.org/model/cessna-172e): 617 aircraft (airframe model)
- [Cessna 172D](https://openairdocs.org/model/cessna-172d): 471 aircraft (airframe model)
- [Cessna 172RG](https://openairdocs.org/model/cessna-172rg): 445 aircraft (airframe model)
- [Cessna 172A](https://openairdocs.org/model/cessna-172a): 435 aircraft (airframe model)
- [Cessna 172B](https://openairdocs.org/model/cessna-172b): 413 aircraft (airframe model)
- [Cessna 172C](https://openairdocs.org/model/cessna-172c): 362 aircraft (airframe model)
- [Cessna 172I](https://openairdocs.org/model/cessna-172i): 353 aircraft (airframe model)
- [Cessna 172Q](https://openairdocs.org/model/cessna-172q): 13 aircraft (airframe model)

All 21 models: https://openairdocs.org/ad/71-18-01/models.md
Every aircraft: https://openairdocs.org/ad/71-18-01/aircraft.md

Its text cites no advisory circulars or STCs.

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