# AD 48-13-07: Turnbuckle Fork Replacement

- Type: Airworthiness directive
- Status: Current
- Products: American Champion 11AC and S11AC
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 610 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/075A32E5A44CAF4486256A380052AD71.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/48-13-07

## The airworthiness directive

48-13-07 AERONCA: Applies to 11AC and S11AC Serial Numbers 1 Through 931.

Compliance required at next periodic inspection but not later than May 1, 1948.

To eliminate interference and failure of the turnbuckle forks at the attachment points of the two elevator control cables to the horn located on the bottom of the control column, inspect to determine that AN 161-16RS turnbuckle forks have been replaced by AN 160-16S forks. The distance between the bottom of the fork slot to the center of the attachment bolt on the new fork is 15/32 inch and the original fork is only 3/8 inch.

(Aeronca Service Helps and Hints No. 19 covers this subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-761](https://openairdocs.org/tcds/A-761): American Champion Aircraft Corp.; names 2 of 4 models: S11AC, 11AC

## 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: 610 (610 by airframe model, 0 by engine model)
- Makers: Aeronca 609, Aeronca/Miller/Delaney 1

Models with the most aircraft:

- [Aeronca 11AC](https://openairdocs.org/model/aeronca-11ac): 603 aircraft (airframe model)
- [Aeronca S11AC](https://openairdocs.org/model/aeronca-s11ac): 6 aircraft (airframe model)
- [Aeronca/Miller/Delaney 11AC](https://openairdocs.org/model/aeronca-miller-delaney-11ac): 1 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/48-13-07/models.md
Every aircraft: https://openairdocs.org/ad/48-13-07/aircraft.md

Its text cites no advisory circulars or STCs.

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