# TCDS TC 226: Franklin Engine Company

- Type: Type certificate data sheet
- Status: Current
- Holder: Franklin Engine Company
- Revision: 0
- Product: Engine
- Certification basis: Part 33
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/e1/7c/e17cfaff084d2ca19c5f0f34c5ee67828e1b960c68ebbf0b5dc7b6750487bf95
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5186DC2D8BCD40158525670C005678E5.0001
- Page: https://openairdocs.org/tcds/TC%20226

## Models (8)

As the data sheet lists them.

- 4AC-199B2
- 4AC-199E4 (O-200-1)
- 4AC-199D3
- 4AC3-199H3 (O-200-5)
- 4AC-199E3
- 4AC-199D2
- 4AC-199B3
- 4AC-199E2

## What the data sheet says

From the PDF's text layer, line by line; tables lose their columns. The PDF is the record.

```text
FRANKLIN ENGINE COMPANY
MODELS:  Aircooled Motors Franklin 4AC-199 series
T.C. NUMBER:  T.C. 226
Model - Franklin 4AC-199B2, B3 4AC-199D2, D3 4AC-199E2, E3,
E4 (O-200-1)
4AC3-199H3
(O-200-5)
Type 4HOA
Direct drive - - - - - - - - - - - -
Rating:
  Maximum continuous,
  hp, rpm, at S.L.
  press. alt. 65-1950-S.L. 85-2500-S.L. 90-2500-S.L. 113-3500-S.L.
  Take-off, hp, rpm,
  full throttle 65-1950 85-2500 90-2500 113-3500
Fuel (minimum octane
  aviation gasoline) 73 - - - - 80 - - - -
Bore and stroke, in. 4.25 x 3.50 - - - - - - - - - - - -
Displacement, cu. in. 199 - - - - - - - - - - - -
Compression ratio 6.0: 1 6.3: 1 7.0: 1 - - - -
C.G. location (with
  all accessories)
    Forward of rear
    mount C.L., in. 5.7; 3.7 - - - - 5.7; 3.7; 2.7 4.6
Weight (dry), lbs. 190; 197 190; 197 190; 197; 202 224
Propeller shaft Integral flanged
   hub 6-3/8 in.
   bolts, 4 in. circle - - - - - - - - SAE No. 10
Carburetion Marvel MA-3P
   carburetor with
   1-5/16 in.
venturi
Marvel MA-3 or
   MA-3A
   carburetor with
   1-3/8 in. venturi
- - - - Marvel MA-3SPA
   carburetor with
   1-5/8 in. venturi
Ignition, dual Eisemann A M-4
   (unshielded) or
   LA-4 (shielded)
   magnetos with
   impulse coupling
   (retard 25
   degrees)
- - - - - - - - - - - -
Ignition timing,
  deg. BTC 26 30 26 or 28 32
Spark plugs Champion AJ-66 ,
   C-10-S, 78S;
   Simmonds-
   Benton 4D3-S;
   AC-SA-47,
   Auto-Lite A5-B
   or A4-S
- - - - - - - - - - - -
Oil sump capacity,
  quarts 5 - - - - - - - - - - - -
Certification basis Type Certificate No. 226 (See NOTE 4)

NOTE 1.    Maximum permissible cylinder head, cylinder barrel and oil inlet temperatures 550 degrees F.,
330 degrees F., and 240 degrees F., respectively, for all models except the 4ACG-199H Series whose
limits are 500 degrees F., 300 degrees F., and 213 degrees F., respectively.
NOTE 2.    The following accessories are eligible for use on the specified engine models at the indicated
additional weights:
Accessory Weight (lbs.)
Generator
Auto-Lite GDY or GAS (6 or 12 volts - Models B3, D3, E3, H3 only) 12
Auto-Lite No. 10621 or 11496 and 10622 or 11497 (both used - Model E4 only) 26
Starter
Auto-Lite MBG or MZ (models B3, D3, E3, E4, H3 only) 16
Delco-Remy No. 10750 (Model E4 only) 16
Fuel Pump
AC No. 10551  3
Hydraulic Pump
Pesco 194-C (Model E4 only)  3
Vacuum Pump
Pesco 194-C (Model E4 only)  4
Miscellaneous
8 quart finned oil sump (included in weight of H3)  2
Fram P-1/2 or PB-1/2 oil filter - -
AC Air cleaner Part No. 1529 265 (for all except engine Model H3) - -
The following accessory drives are provided.
Accessory
Nearest AN
Pad
Designation
Direction of
Rotation, C
= Clockwise
CC =
Counter-
clockwise
Drive Speed
X
Crankshaft
RPM
Maximum Torque
(in. - lbs.)
Continuous       Static
Maximum
Overhang
Moment (in.
- lbs.)
Starter None CC 11.444: 1 - - 240 30
*Generator None CC 1.000: 1 8 15 45
**Generator None CC 1.080: 1 8 15 45
Tachometer AND 10005 CC 0.500: 1 20 60 2
Hydraulic or
   vacuum
   pump AND 10000 C 1.000: 1 75 300 25
*All except 4AC-199-E4
**4AC-199-E4 only
NOTE 3.    The corresponding model designations of military models installed in certified aircraft must be
   incorporated on the engine nameplate at least by the first overhaul period.

NOTE 4.    Approval for all models expired 11/5/50.  No engine of these models manufactured after the
   date shown below or with serial numbers above those listed are eligible for use in certificated aircraft.
Model Date Serial No. Model Date Serial No.
4AC-199-B2,
   B3
1/6/42 200838 4AC-199-E3 5/9/46 201583
4AC-199-D2 5/11/42 200858 4AC-199-E4 11/18/42 201092
4AC-199-D3 9/27/44 201591 4ACG-199-H3 7/2/43 201505
4AC-199-E2 11/10/42 201116
```

## ADs (1, in force first)

- [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more

## Registered aircraft by registry model (OpenAirDocs)

- [Franklin 4AC199B series](https://openairdocs.org/engine/franklin-4ac199b-series): 2 aircraft (registry code 27008)
- [Franklin 4AC-199B3](https://openairdocs.org/engine/franklin-4ac-199b3): 0 aircraft (registry code 27022)
- [Franklin 4AC-199D2](https://openairdocs.org/engine/franklin-4ac-199d2): 0 aircraft (registry code 27019)
- [Franklin 4AC-199D3](https://openairdocs.org/engine/franklin-4ac-199d3): 0 aircraft (registry codes 27028, 27031)
- [Franklin 4AC-199E2](https://openairdocs.org/engine/franklin-4ac-199e2): 0 aircraft (registry code 27029)

## STCs approved under this data sheet (2)

- [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
- [STC SE02293NY](https://openairdocs.org/stc/SE02293NY): ONE ONLY STC: Modification of the engine propeller mounting shaft in accordance with Dennis Taylor Instructions and Requirements for Installation of Aeromatic Propeller on Franklin 4AC-199-E3 Engine Serial Number 200272. Dennis Taylor

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