# TCDS TC 771 (Mars): Mars Manufacturing Company

- Type: Type certificate data sheet
- Status: Current
- Holder: Mars Manufacturing Company
- Revision: 0
- Revised: May 1, 1946
- Product: Aircraft, Small Airplane
- Certification basis: CAR 4a
- Data sheet PDF: https://openairdocs.org/files/sha256/c8/06/c806f562f5d86fb1e4c71205ad0f49122b6037377754d9f680d6e66cecc2d1ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A9E121BE3ED9B3CC862575DD0061A1FE.0001
- Page: https://openairdocs.org/tcds/TC%20771%20(Mars)

## Models (1)

As the data sheet lists them.

- MI-80

## What the data sheet says

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

```text
MARS MANUFACTURING COMPANY
MODELS: Mars MI-80, 2 PCIM (Approved 5/1/46)
Jef. NUMBER: I.C. 771
Engine  Lycoming GO-145-C2
Fuel  73 minimum octane aviation gasoline
Engine limits  For all operations,  3200 rpm (75 hp)
Airspeed limits  level flight or climb - 110 mph True Ind.
Glide or  dive -  144 mph True Ind.
Flaps extended - 80 mph True Ind.
Propeller limits  Static rpm (engine) at maximum permissible throttle
Diameter:  setting Not more than 77 in., not less than 75 in.  Not more or less than 2775 rpm;
C.G. range  (+14.0) to (+18.3)
Datum  Leading edge of  wing
Leveling means  longeron between door and instrument panel
Maximum weight  1350 1bs.
No. seats
Maximum Daggage  40 1bs. (+35)
Fuel capacity  20 gallons  (two wing tanks, 10 gallons each)
(+27) (See NOTE 4)
oil capacity  5 quarts (-42)
control surface  Wing flaps  Down 46 degrees
movements  Elevator  4 degrees  Down 26 degrees
(See NOTE 3)  Up 17 degrees  9 degrees
Up 18 degrees  Down 17 degrees
Stabilizer  (Fixed)
Serial Numbers eligible  101 and up  per NOTE
Required equipment  Items 1, 201 and 202
Specifications Pertinent to All Models:
Certification basis  Type Certificate No. 771 (CAR da)
Production basis  None (See NOTE A)
Export eligibility  Eligible for export as follows subject to provisions
of MOP 2-4:
- Landplane - eligible,
- Skiplane - not eligible.
All other countries except Great Britain,
Australia and New zealand.
Fropeller and Propeller Accessories:
Propeller  - wood (fixed or adj. pitch)  13 lbs.  (-60)
Landing Gear and Floats:
6.00-6 rear wheels with trakes
(Firestone 6C4WB)  and two-ply tires  29 1bs.  (+33)
202. 6.00-6 nose wheel  (Firestone 6CJ)
with two-ply tire  12 1bs.  (-43)
203. Parking brake  Neglect Weight
Interior Equirment:
#01. Dual control  7 1ks.  (-12)
NOTE A. Prior to original certification, each aircraft must satisfactorily

An inspection for workmanship, materials and conformity before
and covering, metal priming or final finish is applied.  All woodwork
may be varnished,
A final inspection of the completed aircraft.
A check of the flight characteristics.
NOTE light empty and corresponding center of gravity location, and loading  instructions when necessary, must be submitted for each aircraft with  Weight and balance report including list of equipment in certificated
original inspector's report and each subsequent report covering changes
in such equipment.
NOTE 2. The following placard shall be placed on instrument panel in full
view of the pilot:
"This Aircraft Characteristically Incapable of Spinning."
NOTE 3.  Ailerons may be rigged either neutral or one inch up at the trailing
NOTE 4. Fuel tank selector valve must be placarded to use one tank at a time.
```

## ADs

None name its models.

## STCs approved under this data sheet (1)

- [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC

## PMA parts (OpenAirDocs) (2)

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.

- [S1069](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175104711920260806152325.0001): 100R Fuel Placard. Swift Fuels, LLC · PMA PQ04423CE · Modification part · For MI-80 · Jul 20, 2026
- [73-CFG-R](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170738879920260806152419.0001): Fuel Quantity Indication Placard. Swift Fuels, LLC · PMA PQ04423CE · Modification part · For MI-80 · Jul 20, 2026

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