# TCDS ATC 47 Comet: Comet Engine Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Comet Engine Corporation
- Revision: 0
- Product: Engine
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/07/98/079886bac89e07903b4bd8883477f670c5048b1ea06cfe027e9f3bab8498c368
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2FB446C33990A6E7862572C0006DF0A8.0001
- Page: https://openairdocs.org/tcds/ATC%2047%20Comet

## Models (1)

As the data sheet lists them.

- 7-E

## What the data sheet says

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

```text
MCLEIS: Comet 7-E
I_C.  NUMEER: ATC 47
Model  T-E
Type  TRA
Rating:
Maximum continuous,
DE. IEM.  at S.I.
Fress. alt.  165-1900-S.1.
Take-off (one minute).
nf. Ipm, at full
thrcttle  165-1900
fuel (minimum cctane
aviation gasoline)  65
dore  and stroke, in.  4.5 × 5.5
[isflacement, cu. in.  612.3
Comfression ratio  5.4:1
height  (dry), 1ks.  404
Crankshaft  gearing  Direct drive
Supercharging
(Impeller gear ratio)  1: 1
Carburetion  Stromberg NAS-SA carburetor
Ignition.  dual  Scintilla MN7D magnetos
Certification Lasis  Approved Iype Certificate No. 47
in ceRtiricate expireraif!5/36. No engines of this model manufactured after this date ellgirle for we
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Comet 7E](https://openairdocs.org/engine/comet-7e): 2 aircraft (registry code 14502)

## 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/DRSDOCID147916700620260722204347.0001): Swift Fuels, LLC · PMA PQ04423CE · For 7-E · Jul 17, 2026

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