# AD 56-04-01: Control Stick Socket Castings

- Type: Airworthiness directive
- Status: Current
- Products: American Champion 7EC
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 267 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ED8326A7982A5DD886256A380052C345.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/56-04-01

## The airworthiness directive

56-04-01 CHAMPION: Applies to Model 7EC Aircraft, Serial Numbers 300 to 370 Inclusive.

To be accomplished as soon as practicable but not later than April 1, 1956.

Inspect front and rear control stick socket castings, P/N 2-705, for cracks at the ears to which the push-pull tube attaches. If found cracked, the castings should be replaced. If a standard AN bolt, nut and washer are installed, replace with a clevis bolt, AN 24-16, (11/16 grip), and an AN 320-4 shear nut so that excessive loads cannot be placed on the socket ears.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-759](https://openairdocs.org/tcds/A-759): American Champion Aircraft Corp.; names 1 of 22 models: 7EC

## 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: 267 (267 by airframe model, 0 by engine model)
- Makers: Champion 174, Aeronca 55, American Champion 38

Models with the most aircraft:

- [Champion 7EC](https://openairdocs.org/model/champion-7ec): 157 aircraft (airframe model)
- [Aeronca 7EC](https://openairdocs.org/model/aeronca-7ec): 52 aircraft (airframe model)
- [American Champion 7EC](https://openairdocs.org/model/american-champion-7ec): 38 aircraft (airframe model)
- [Champion AERONCA 7EC](https://openairdocs.org/model/champion-aeronca-7ec): 14 aircraft (airframe model)
- [Aeronca 7EC CONV](https://openairdocs.org/model/aeronca-7ec-conv): 3 aircraft (airframe model)
- [Champion 7EC(CONV)](https://openairdocs.org/model/champion-7ec-conv): 3 aircraft (airframe model)

All 8 models: https://openairdocs.org/ad/56-04-01/models.md
Every aircraft: https://openairdocs.org/ad/56-04-01/aircraft.md

Its text cites no advisory circulars or STCs.

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