TCDS TC 637

HARTMANN AIBCHAPT CORPORATION MODELS: Hartman OW5M (Pormerly Welch), 2 PCIH I.C. NUMBER: 637 Engine Continental A-40-4 (See #OTE 1) Fuel 73 minimum octane ariation gasoline Engine limits Por all operations, 2575 rpm (40 hp) Airspeed limits Level flight or climb - 75 mph True Ind. Glide or dive - 90 mph True Ind. Propeller limits Maximum permissible diameter 77 in. C.G. range to (+19.5) Datum Leading edge of wing Maximum weight No. seats Baggage 9 ibs. (behind seat) Fuel capacity 9 gallons (two 4-1/2 gallon tanks in ving 1.E.) oil capacity gallon (engine sump) Serial Nos. eligible 115 and up (See NOTE A) Required equipment Items 101. 102, 103 Certification basis Type Certificate No. 637 (Aero. Bulletin 7A requirements) Production basis Hone (See NOTE A) Eligible for export to all countries except Great Britain, Canada, Australia and New Zealand. (Items included under "Required equipment" may not be remored unless replaced by approred eguivalent items. The effect upon balance of all equipment changes must be computed and the aircraft operation record Values in inches shown in parenthesis after each item represent horizontal arms to the C.G. of the item measured minus (-) ahead and plus (+) to the rear of the datum. A plus (+) or minus (-) sign preceding the weight of an optional item indicates the net weight change between that item and the equivalent required item.) Propellers and Propeller 103- Propeller - wood (fixed or adJ. pitch) Landing Gear and Floats 16x7-3 wheels (Goodyear 3NBA) 12 1bs. 102. 6x2.00 tail wheel Hartman Model "C" (formerly Welch) cushion wheel - 1 1b. Miscellaneous (not listed above) miscellaneous items as noted in approved weight and balance report. 301. Parachutes 20 1bs. each Streamlined lift struts -12 1bs. (approximately) 303. Skis Use actual weight change (a) Heath 725 NOTE A. Prior to original certification, each aircraft must satisfactorily An inspection for workmanship, materials and conformity before any covering, metal priming or final finish is applied. All woodwork may be varnished. (b) A final inspection of the completed aircraft. (c) Check of the flight characteristics. No aircraft of this model shall be eligible for original certifi- cation with single ignition engines after 8/1/41. In addition, no aircraft of these models shall be eligible for recertification with single ignition engines unless such aircraft were either previously certificated vith single ignition engines or were originally certifi- cated prior to 8/1/41.