# TCDS Group 3 Bristol: Bristol Siddeley Engines Ltd.

- Type: Type certificate data sheet
- Status: Current
- Holder: Bristol Siddeley Engines Ltd.
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/79/80/7980072996d725932e3dc5073d70b6aac6b1889865848bc9cbe0079013443ea1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6D27AD57F49DA3B4862572C0006A426F.0001
- Page: https://openairdocs.org/tcds/Group%203%20Bristol

## Models (1)

As the data sheet lists them.

- DeHavilland Gipsy

## What the data sheet says

This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers.

```text
FRISICI SIDDELEY ENGINES, ITD.
MCLEIS: (Bristol Siddeley) DeHavilland Gipsy
I-C: NUMEER: GroUF 3
Model  Gipsy
туге  4IA
kating:
Maximum continuous,
at S.L.
press.  alt.  85-1900-S-L.
Take-off  (one minute).
hE. IEm, at full
throttle  85-1900
Fore,  in.  4.5x5.125
Cisplacement,  cu. in.  302
compression ratio  5.4:1
Weight  (dry). 1bs.
certification basis  Group 3 (manufactured in foreign country prior to 6/20/31)
```

## ADs

None name its models.

## STCs approved under this data sheet (1)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC

## PMA parts (OpenAirDocs) (1)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this data sheet's models, so check the FAA record before relying on it. Newest first.

- [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163684766220260722204347.0001): Swift Fuels, LLC · PMA PQ04423CE · For DeHavilland Gipsy · Jul 17, 2026

---
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.