# TCDS A-729: Commonwealth Aircraft Inc. - Type: Type certificate data sheet - Status: Current - Holder: Commonwealth Aircraft Inc. - Revision: 5 - Revised: December 20, 1949 - Product: Aircraft, Small Airplane - Registered aircraft: 105, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/47/82/478261188d2ff8fe23cec7ddf5d09c3d721035322cec74c6951ab22e0ab8766c - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AFD65AFA60222F1A85256732004C8D99.0001 - Page: https://openairdocs.org/tcds/A-729 ## Models (5) As the data sheet lists them. - 190F - 175 - 180 - 180F - 185 ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text Page No. 1 2 3 4 5 Rev. No. 5 5 5 5 5 Reformatted 1/95. DEPARTMENT OF COMMERCE CIVIL AERONAUTICS ADMINISTRATION A-729 Revision 5 COMMONWEALTH REARWIN 175 180 180F 185 190F December 20, 1949 AIRCRAFT SPECIFICATION NO. A-729 Manufacturer Commonwealth Aircraft, Inc. Valley Stream, Long Island New York I - Model 175, 2 PCLM, Approved August 16, 1940 Engine Continental A-75-8. See Item 311 for optional engines. Fuel 73 min. octane aviation gasoline Engine limits For all operations, 2600 rpm (75 hp) Airspeed limits Level flight or climb 115 mph True Ind. Glide or dive 145 mph True Ind. Propeller limits Static r.p.m. at maximum permissible throttle setting - not over 2420, not under 2170. No additional tolerance permitted. Diameter - not over 82 in., not under 68 in. C.G. range (+11.9) to (+17.2) Empty weight C.G. range (+10.3) to (+12.6) with standard fuel system. (+10.3) to (+10.8) with 18 gal. fuel tanks and 2 gal. oil tank. When Empty weight C.G. falls within pertinent range, computation of critical fore and aft C.G. positions is unnecessary. Ranges are not valid for non-standard arrangements except as noted. Maximum weight 1350 lbs. No. seats 2 (+20) Maximum baggage 100 lbs. (+41.5) Fuel capacity 24 gals. (two 12 gal. wing tanks at +22). See Item 203 for larger fuel capacity. Oil capacity 5 qts. (-41). See Item 204 for larger oil capacity. Control surface movements Aileron 27 degrees up 27 degrees down Elevator 30 degrees up 33 degrees down Rudder 27 degrees left 27 degrees right Elevator trim tab 27.5 degrees up 20.5 degrees down Serial Nos. eligible 1501 and up mfrd. prior to 2-4-49. Approval expired as of that date. Required equipment Items 101, 102, 103, 104, 105 and 106 II - Model 180, 2 PCLM, Approved October 25, 1941 Engine Continental A-80-8. See Item 205 for optional engines. Fuel 80 min. octane aviation gasoline Engine limits For all operations, 2700 rpm (80 hp) Airspeed limits Level flight or climb 115 mph True Ind. Glide or dive 145 mph True Ind. Propeller limits Static rpm at maximum permissible throttle setting - not over 2325, not under 2225. No additional tolerance permitted. Diameter - not over 70 in., not under 68 in. C.G. range (+11.9) to (+17.2) Empty weight C.G. range (+10.3) to (+12.6) with standard fuel system. (+10.3) to (+10.8) with 18 gal. fuel tanks and 2 gal. oil tank. When Empty weight C.G. falls within pertinent range, computation of critical fore and aft C.G. positions is unnecessary. Ranges are not valid for non-standard arrangements except as noted. A-729 2 Maximum weight 1350 lbs. No. seats 2 (+20) Maximum baggage 100 lbs. (+41.5) Fuel capacity 24 gals. (two 12 gal. wing tanks at +22). See Item 203 for larger fuel capacity. Oil capacity 5 qts. (-45). See Item 204 for larger oil capacity. Control surface movements Aileron 27 degrees up 27 degrees down Elevator 30 degrees up 33 degrees down Rudder 27 degrees left 27 degrees right Elevator trim tab 27.5 degrees up 20.5 degrees down Serial Nos. eligible 1501 and up mfrd. prior to 2-4-49. Approval expired as of that date. Required equipment Items 101, 102, 103, 104, 105 and 106 III - Model 180F, 2 PCLM, Approved October 25, 1941 Engine Franklin 4AC-176-F3. See Item 311 for optional engines. Fuel 80 min. octane aviation gasoline Engine limits For all operations, 2500 rpm (80 hp) Airspeed limits Level flight or climb 115 mph True Ind. Glide or dive 145 mph True Ind. Propeller limits Static rpm at maximum permissible throttle setting - not over 2350, not under 2150. No additional tolerance permitted. Diameter - not over 70 in., not under 68 in. C.G. range (+10.4) to (+17.2) Empty weight C.G. range (+8.4) to (+12.6) with standard fuel system. (+8.4) to (+10.8) with 18 gal. fuel tanks and 2 gal. oil tank. When Empty weight C.G. falls within pertinent range, computation of critical fore and aft C.G. positions is unnecessary. Ranges are not valid for non-standard arrangements except as noted. Maximum weight 1350 lbs. No. seats 2 (+20) Maximum baggage 100 lbs. (+41.5) Fuel capacity 24 gals. (two 12 gal. wing tanks at +22). See Item 203 for larger fuel capacity. Oil capacity 5 qts. (-45). See Item 204 for larger oil capacity. Control surface movements Aileron 27 degrees up 27 degrees down Elevator 30 degrees up 33 degrees down Rudder 27 degrees left 27 degrees right Elevator trim tab 27.5 degrees up 20.5 degrees down Serial Nos. eligible 1530 and up mfrd. prior to 2-4-49. Approval expired as of that date. Required equipment Items 101, 102, 103, 104, 105 and 106 IV - Model 190F, 2 PCLM, Approved September 1, 1942 Engine Franklin 4AC-199-B3. Fuel 80 min. octane aviation gasoline Engine limits For all operations, 2500 rpm (90 hp) Airspeed limits Level flight or climb 115 mph (100 knots) True Ind. Glide or dive 145 mph (126 knots) True Ind. Propeller limits Static rpm at maximum permissible throttle setting: Not over 2200, not under 2100. No additional tolerance permitted. Diameter: not over 72 in., not under 70 in. C.G. range (+10.3) to (+16.2) Empty weight C.G. range (+8.5) to (+11.5) with standard fuel system. (+8.5) to (+9.9) with 18 gal. fuel tanks and 2 gal. oil tank. When Empty weight C.G. falls within pertinent range, computation of critical fore and aft C.G. positions is unnecessary. Ranges are not valid for non-standard arrangements except as noted. Maximum weight 1450 lbs. No. seats 2 (+20) Maximum baggage 100 lbs. (+41.5) Fuel capacity 24 gals. (two 12 gal. wing tanks at +22). See Item 203 for larger fuel capacity. Oil capacity 5 qts. (-45). See Item 204 for larger oil capacity. Control surface movements Aileron 27 degrees up 27 degrees down Elevator 30 degrees up 33 degrees down Rudder 27 degrees left 27 degrees right Elevator trim tab 25 degrees up 20 degrees down Serial Nos. eligible 1575 and up mfrd. prior to 2-4-49. Approval expired as of that date. Required equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: 101, 102, 103, 104, 105 and 106 3 A-729 V - Model 185, 2 PCLM, Approved February 12, 1946 Engine Continental C85-12 Fuel 73 min. octane aviation gasoline Engine limits For all operations, 2575 rpm (85 hp) Airspeed limits Level flight or climb 115 mph (100 knots) True Ind. Glide or dive 155 mph (135 knots) True Ind. Propeller limits Static rpm at maximum permissible throttle setting: Not over 2300, not under 2050. No additional tolerance permitted. Diameter: Not over 74 in., not under 72 in. C.G. range (+10.3) to (+16.2) Empty weight C.G. range (+8.5) to (+11.5). When Empty weight C.G. falls within this range, computation of critical fore and aft C.G. positions is unnecessary. Range is not valid for non-standard arrangements. Maximum weight 1450 lbs. No. seats 2 (+20) Maximum baggage 100 lbs. (+41.5) Fuel capacity 24 gals. (two 12 1/2 gal. wing tanks at +22). Oil capacity 4.6 qts. (-41). See Item 107 for larger oil capacity. Control surface movements Aileron 25 degrees up 26 degrees down Elevator 32 degrees up 31 degrees down Elevator tab 25 degrees up 21 degrees down Rudder 27 degrees right or left Serial Nos. eligible 1601 and up mfrd. prior to 2-4-49. Approval expired as of that date. Required equipment In addition to the pertinent required basic equipment specified in CAR 4a, the following items of equipment must be installed: 101, 102, 103, 104, 208 and 209 SPECIFICATIONS PERTINENT TO ALL MODELS Datum Wing loading edge Leveling means Spirit level aft of seat, left side of fuselage Certification basis Type Certificate No. 729. (Expired) (CAR 4a) Export eligibility Eligible for export to all countries subject to the provisions of MOP 2-4 except as follows: Canada - landplane eligible. skiplane not eligible. Equipment: A Plus (+) or minus (-) sign preceding the weight of an optional item indicates the net weight change when that item is installed. Propellers and Propeller Accessories 180F 175 180 190F 185 1. Propeller - Koppers Aeromatic F200, blades +25 lbs. (-60) 00-74C. Pitch settings at 24 in. sta.: high 21.6 degrees, low 12.6 degrees Diameter: 74 in. Parts List No. 4306. No change permitted in parts list assembly without CAA engineering approval. Oil cooler, Item 108, required with this item. 2. Propeller - McCauley 1A-90-CF-7146. +11 lbs. (-60) Static rpm at max. permissible throttle setting: Not over 2320, not under 2220. No additional tolerance permitted. Diameter: Not over 71 in., not under 69.5 in. A 3 pound ballast weight required at fuselage station +170. 3. Propeller - Flottorp, Controllable pitch, R003, Blades R003-232-72T (See NOTE 6, Propeller Spec. P-804 for interchangeable blade.) Weight, including propeller and controls 30 lbs. (-60) Pitch setting at 27" sta.: High 19 degrees, Low 14 degrees Diameter: Not over 74 in., not under 72.5 in. A-729 4 180F 175 180 190F 185 4. Propeller - Sensenich M76AK-2, fixed pitch metal 24 lbs. (-60) Static rpm at maximum permissible throttle setting: Not over 2320, not under 2220. No additional tolerance permitted. Diameter: Not over 74 in., not under 72 in. 5. Propeller - Sensenich M74Ck-2, fixed pitch metal21 lbs. (-60) Static rpm at maximum permissible throttle setting: Not over 2470, not under 2120. No additional tolerance permitted. Diameter: Not over 72 in., not under 70 in. 101. Propeller - wood (fixed or adjustable pitch) 12 lbs. (-60) (-60) (-58) (-60) including hub. Limits as shown under pertinent model. Engines and Engine Accessories - Fuel and Oil System 102. Engine cowl and baffles 9 lbs. (-39) (-39) (-39) (-39) 103. Two exhaust manifolds 3 lbs. (-41) (-41) (-41) (-41) 104. Carburetor air heater 3 lbs. (-38) (-38) (-36) (-38) 107. 5 qt. oil tank (Model 185 only). 108. Oil cooler (Continental Motors Type EQ5334 (Required with Item 1). +4 lbs. (-39) 109. Oil filter, Fram PB-5 Kit K-510 4 lbs. (-27) Fram installation dwg. 61520. 203. Two 18 gal. fuel tanks (replacing 12 gal. tanks) (Item 204 required) +9 lbs. (+22) (+22) (+22) — 204. 2 gal. oil tank (replacing 5 qt. tank)+1 lb. (-41) (-41) (-45) — 205. Engines (a) Continental A-80-9 +3 lbs. (-46) — — 305. Starter (a) (Eclipse E-80) 18 lbs. (-32) (-32) — — (b) (Eclipse Type 635 Model 4, Style A) 17 lbs. (-34) (-34) — — (c) (Auto-Lite MBG) 16 lbs. (-35.5) — (d) (Delco-Remy 110965-6, 12 volt) 15 lbs. (-35) 308. Engine shielding 2 lbs. (-35) (-35) (-35) (-35) 311. Engines (a) Continental A-75-9 or 9J +3 lbs. (-46) — — — (b) Continental A-75-8J (Item 104 not required) +3 lbs. (-46) — — — (c) Franklin 4AC-176-F2 No weight change (Applies only to Model 180F) Landing Gear and Floats 105. 6.00-6 wheels (Shinn 6C5) with 6.00-6 4 ply tires 28 lbs. ( -5) ( -5) ( -5) — 106. 6x2.00 tail wheel (Steerable) (Firestone 206-8BK) with 6x2.00 tail wheel tire (solid) 11 lbs. (+180) (+180) (+180) — 208. 6.00-6 wheels with brakes (Goodyear L6H/MBD) and 6.00-6 4 ply tires 33 lbs. ( -5) 209. 6x2.00 tail wheel, steerable, and 6x2.00 solid tire (Scott 3000-81) 13 lbs. (+180) 210. Parking brake (Scott 4200) 1 lb. (-23) 302. Parking brake 2 lbs. (-14) (-14) (-14) — 303. 6.00-6 wheels (a) Mechanical brakes (Shinn 6C5HB) +4 lbs. ( -5) ( -5) ( -5) — (b) Hydraulic brakes (Shinn 6C5YFB) +7 lbs. ( -5) ( -5) ( -5) — 304. Wheel pants 12 lbs. ( -5) ( -5) ( -5) ( -5) 312. Skis Use actual weight change (a) Federal SC-2 (b) Federal SC-1 (c) Federal A-1500, Federal Installation Dwg. 11R247 (d) Federal A-1500A, Federal Installation Dwg. 11R247 (e) Federal A-1850, Federal Installation Dwg. 11R247 (f) Federal A-2000, Federal Installation Dwg. 11R247 (g) Federal A-2000A, Federal Installation Dwg. 11R247 (h) Federal CA1850-6, Federal Installation Dwg. 11R247 5 A-729 Electrical Equipment 180F 175 180 190F 185 Battery and box (a) Airguide radio battery 8 lbs. (-21) (-21) (-21) — (b) 12 bolt (Exide (6-TS-7-1) 31 lbs. (-29) (-29) (-29) (-29) (c) 6 volt (Exide 3-AC-7-1) 13 lbs. (-39) (-29) (-29) — (d) 12 bolt (Willard SYR-7-6) 20 lbs. (-28) (-28) (-29) (-28) (e) 6 volt (Roading 333L) 17 lbs. (-29) (-29) — — 306. Generator (a) 12 volt (Auto-Lite GDY) 14 lbs. (-33) — (b) 6 volt (Auto-Lite GAS) 14 lbs. (-33) — (c) 12 volt (Lear 1030-A) 9 lbs. ( +6) ( +6) — — (d) 12 volt (Delco-Remy 1101876)10 lbs. (-34) 310. Landing lights (a) One (Grimes ST-250) 4 lbs. (+12) (+12) (+12) (+12) (b) Two (Grimes ST-250) 8 lbs. (+12) (+12) (+12) (+12) Interior Equipment 301. Cabin heater 2 lbs. (-32) (-32) (-30) (-32) Miscellaneous (not Listed Above) 207. Fuselage and control system protective covering 5 lbs. (+95) (+95) (+95) (+95) NOTE 1. Weight and balance report including list of equipment included in certificated weight empty, and loading instructions, when necessary, must be submitted for each aircraft with original agent's report and each subsequent report covering changes in equipment. .....END..... ``` ## ADs (1, in force first) - [AD 48-06-02](https://openairdocs.org/ad/48-06-02): Jury Struts · Commonwealth 175, 180, 180F and 2 more ## Registered aircraft by registry model (OpenAirDocs) - [Commonwealth 185](https://openairdocs.org/model/commonwealth-185): 62 aircraft (registry code 2370608) - [Commonwealth REARWIN 185](https://openairdocs.org/model/commonwealth-rearwin-185): 16 aircraft (registry code 2370604) - [Rearwin 175](https://openairdocs.org/model/rearwin-175): 11 aircraft (registry code 2370402) - [Rearwin 185](https://openairdocs.org/model/rearwin-185): 4 aircraft (registry code 2370602) - [Commonwealth REARWIN 175](https://openairdocs.org/model/commonwealth-rearwin-175): 3 aircraft (registry code 2370404) - [Rearwin 180F](https://openairdocs.org/model/rearwin-180f): 3 aircraft (registry code 2370504) - [Commonwealth REARWIN 180F](https://openairdocs.org/model/commonwealth-rearwin-180f): 2 aircraft (registry code 2370508) - [Rearwin 180](https://openairdocs.org/model/rearwin-180): 2 aircraft (registry code 2370502) - [Commonwealth REARWIN 180](https://openairdocs.org/model/commonwealth-rearwin-180): 1 aircraft (registry code 2370506) - [Rearwin 190F](https://openairdocs.org/model/rearwin-190f): 1 aircraft (registry code 2370704) - [Commonwealth REARWIN 190F](https://openairdocs.org/model/commonwealth-rearwin-190f): 0 aircraft (registry code 2370708) - [Commonwealth/Irish 185 SKYRANGER](https://openairdocs.org/model/commonwealth-irish-185-skyranger): 0 aircraft (registry code 05620QL) ## STCs approved under this data sheet (32) - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA00079NY](https://openairdocs.org/stc/SA00079NY): Installation of Airwolf remote mounted engine oil filter kit AFC-K008 on single and multi engine fixed wing light aircraft incorporating Teledyne Continental reciprocating engines of 450 horsepower or less.. Airwolf Filter Corporation - [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system.. Shady Aviation LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA4503NM](https://openairdocs.org/stc/SA4503NM): Remove original cloth covering and install Ceconite covering. Ceconite Division of Poly-Fiber Inc. - [STC SA04776NY](https://openairdocs.org/stc/SA04776NY): The HIPEC Covering and Finishing System must be performed and maintained. HIPEC Aircraft Coatings Inc. - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SA00433NY](https://openairdocs.org/stc/SA00433NY): Installation of Airwolf remote mounted engine oil filter model AFC-500 or AFC-600 on multi engine fixed wing light aircraft incorporating Franklin reciprocating engines of 450 horsepower or less.. Airwolf Filter Corporation - [STC SA01734SE](https://openairdocs.org/stc/SA01734SE): Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.. Andrew D. Humphrey - [STC SA00478CH](https://openairdocs.org/stc/SA00478CH): Installation of Cooper Superflite 102 Fabric.. Aviation Products Systems Inc. - [STC SA01768SE](https://openairdocs.org/stc/SA01768SE): Installation of an oil cooler system.. Steve's Aircraft - [STC SA10921SC](https://openairdocs.org/stc/SA10921SC): Installation of an alternator and regulator as a replacement to existing OEM generators and mechanical voltage regulators. Hartzell Engine Technologies, LLC - [STC SA593CH](https://openairdocs.org/stc/SA593CH): Install Champion SlickSTART magneto booster system.. Champion Aerospace LLC - [STC SA01944CH](https://openairdocs.org/stc/SA01944CH): Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index, per ASTM Specification D-439 or D-4818 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227.. Experimental Aircraft Association Inc. - [STC SA905GL](https://openairdocs.org/stc/SA905GL): Superseded by STC SA01944CH. Modify airplane to fly on unleaded automotive gasoline, 87 minimum antiknock index.. EAA Aviation Foundation - [STC SA1008WE](https://openairdocs.org/stc/SA1008WE): Installation of Poly-Fiber covering material.. Poly-Fiber Inc. - [STC SA489EA](https://openairdocs.org/stc/SA489EA): Installation of ARP Inc. carburetor ice detection system. Aircraft & Rotorcraft Products (ARP) Inc - [STC SA167CH](https://openairdocs.org/stc/SA167CH): Surrendered and incorporated into STC SA00478CH.. Cooper Aviation Supply Company, Inc. - [STC SA00433](https://openairdocs.org/stc/SA00433): Installation of Airwolf remote mounted engine oil filter Model AFC-500 or AFC-600 on multi engine fixed wing light aircraft incorporating Franklin reciprocating engines of 450 horsepower or less. (with Franklin engines). Airwolf Filter Corporation - [STC SA2-952](https://openairdocs.org/stc/SA2-952): Installation of fiberglass covering.. Razorback Fabrics Inc - [STC SA5755NM](https://openairdocs.org/stc/SA5755NM): Installation of a propeller anti theft device.. Davis Ray G - [STC SA862NE](https://openairdocs.org/stc/SA862NE): Installation of a Franklin Model 4AC-199-E3 engine and a Sensenich Model 72DF-48 fixed-pitch wood propeller.. Palmer Milton A - [STC SA4-302](https://openairdocs.org/stc/SA4-302): Installation of BN-1 propeller spinner.. ACS Products Co, Inc - [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc - [STC SA4-1210](https://openairdocs.org/stc/SA4-1210): Installation of Eonnex cover on aircraft surfaces.. Ceconite, Inc - [STC SA3976WE](https://openairdocs.org/stc/SA3976WE): Installation of McCauley 1B90CM7038 propeller on aircraft equipped with Continental A-80-9 engine.. Daugherty John E - [STC SA308EA](https://openairdocs.org/stc/SA308EA): Installation of carburetor ice detection system 105AP in single and twin engine aircraft and single engine helicopters powered by Continental, Franklin, and Lycoming type engines equipped with Marvel-Schebler MA-2, MA-3, MA-4, MA-4-5, MA-6 and HA-6 series carburetors. (Normal,Utility and Acrobatic Category airplanes and helicopters equipped with engines and carburetors as described.). Alfred R Puccinelli - [STC SA81GL](https://openairdocs.org/stc/SA81GL): Installation of Continental C90-12F engine, McCauley 1B90CM7146propeller, Maule tail wheel P/N SFS-1-4-P8.. Bolin Harvey - [STC SA798EA](https://openairdocs.org/stc/SA798EA): Installation of Monitair exhaust gas combustion monitor kit.. Rosemount Engineering Co - [STC SA4-1208](https://openairdocs.org/stc/SA4-1208): Ceconite covering of complete aircraft.. Cooper Engineering Corporation - [STC SA4-901](https://openairdocs.org/stc/SA4-901): Fiberglas covering on wings.. Glasco-Air Products --- 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.