# Goodyear S-121

- Type: Aircraft model (FAA registry)
- Registry code: 3870145
- Manufacturer (registry): GOODYEAR
- Model: S-121
- Aircraft type: Balloon
- Category: Balloon
- Engines: None
- Seats: 6
- Weight class: Up to 12,499 lb
- Cruise speed: 15 mph
- Certification: Type certificated
- Data sheet: [TCDS 1A14](https://openairdocs.org/tcds/1A14) (OpenAirDocs)
- Holder: Balloon Club of America
- Registered aircraft: 0
- Page: https://openairdocs.org/model/goodyear-s-121

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2013-03-10](https://openairdocs.org/ad/2013-03-10): Hardware · Aeronaut Instruction Research Skysailor 105, Skysailor 90, 110C and 439 more. Effective Mar 19, 2013

## Information bulletins (advisory) (1)

- [SAIB CE-11-44](https://openairdocs.org/saib/CE-11-44): Fuel: Cylinder Strap Installation. Issued Jul 13, 2011

## Registered aircraft

None registered with this model now.

## NTSB investigations

None matched to aircraft with this model.

## FAA accident and incident reports

None matched to aircraft with this model.

## STCs that may be installed (OpenAirDocs) (2)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.