# AD 47-47-08: Fuel Line Chafing

- Type: Airworthiness directive
- Status: Current
- Products: Textron 35, 35-33, 35-A33, 35-B33, 35-C33, 35-C33A and 35R
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 1,077 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4BAA648862C89BD186256A08006E6536.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/47-47-08

## The airworthiness directive

47-47-08 BEECH: (Was Mandatory Note 2 of AD-777-1.) Applies to Model 35 Serial Numbers D210 to D558 Inclusive, D560 to D574 Inclusive, D580 to D668 Inclusive, and D670 to D678 Inclusive.

Compliance required as soon as possible but not later than January 15, 1948.

To prevent the top carburetor baffle from cutting through the aluminum alloy fuel line located between the engine driven fuel pump and the carburetor, remove the rubber grommet in this baffle and enlarge the cut out in the baffle for the grommet to permit a minimum of 1/2 inch clearance between the fuel line and the baffle. No grommet is required for the above modification. Inspect the fuel line for chafing or wear at the point where the line passes through the baffle. If necessary, replace the line with a new part, Beech P/N 35-924058 or the equivalent.

(Beech Service Bulletin No. 35-4 covers this same subject.)

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 3A15](https://openairdocs.org/tcds/3A15): Textron Aviation Inc.; names 5 of 27 models: 35-C33A, 35-A33, 35-C33, 35-33, 35-B33
- [TCDS A-777](https://openairdocs.org/tcds/A-777): Textron Aviation Inc.; names 2 of 9 models: 35R, 35

## 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: 1,077 (1,077 by airframe model, 0 by engine model)
- Makers: Beech 1,077

Models with the most aircraft:

- [Beech 35-B33](https://openairdocs.org/model/beech-35-b33): 291 aircraft (airframe model)
- [Beech 35](https://openairdocs.org/model/beech-35): 266 aircraft (airframe model)
- [Beech 35-C33](https://openairdocs.org/model/beech-35-c33): 185 aircraft (airframe model)
- [Beech 35-33](https://openairdocs.org/model/beech-35-33): 130 aircraft (airframe model)
- [Beech 35-C33A](https://openairdocs.org/model/beech-35-c33a): 113 aircraft (airframe model)
- [Beech 35-A33](https://openairdocs.org/model/beech-35-a33): 85 aircraft (airframe model)
- [Beech 35R](https://openairdocs.org/model/beech-35r): 7 aircraft (airframe model)

All 7 models: https://openairdocs.org/ad/47-47-08/models.md
Every aircraft: https://openairdocs.org/ad/47-47-08/aircraft.md

Its text cites no advisory circulars or STCs.

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