7505 Karl May Drive • Waco Regional Airport • P.O. Box 5219 • Waco, TX 76708
Phone: (254) 752-8381 • Fax: (254) 752-3307 • www.ramaircraft.com

Baron C55, D55, E55, 58, and 58A
RAM Overhaul and Improvement Package ( R.O.I. )

Engines - Two OHE Continental IO-520 to IO-550-C/RA
Conversion STC
  • Horsepower: 300
  • TBO: 1700 Hours
  • SAP Millennium Cylinders - NE
  • Crankcase, heavy style with 7th studs: OHE
  • Crankshaft: NE
  • Camshaft - RAM High-Efficiency: NE
  • Starter and Starter Drive: OHE
    [ without freon compressor drive ]
    * see additional specifications
  • Spark Plugs: New
  • Magneto Harness - Champion: New
  • Magnetos - Champion Slick 6310 (impulse coupled): OHE
  • Fuel Injection System with non-altitude compensation fuel pump: OHE
  • Oil and Oil Filter: New
  • Throttle Assembly: OHE
  • Induction Couplings: New

OHE = Overhauled Exchange
NE = New Exchange - OEM or PMA
New = New Outright - OEM or PMA
New Items = Subject to test time,
ferry time and inventory time.

Installation Parts - Included
  • Engine Shock Mounts: New
  • Primary fuel, oil, and induction hose kits - heavy duty - Teflon™: New
  • D’Shannon Aviation High-Efficiency Baffle Cooling Kit Installed: New - 5 year warranty
Upgrade Kit - Included
  • RAM OHE Engine Conversion STC authorization documentation to convert your existing 285 hp IO-520 engines to 300 hp IO-550-C/RA engines
  • D’Shannon Aviation Upgrade Engine Installation STC, including STC Authorization Documentation, Installation Instructions and Drawings, and FAA Approved Supplemental Pilot Operating Handbook authorizing installation of your upgraded 550-C/RA engines.
Installation and Set-up
  • Each aircraft receives a detailed preflight and flight inspection to ensure airworthiness and to document performance of instruments, flight controls, landing gear, accessories, lights, and avionics.
  • Discrepancies are brought to customer’s attention. Unairworthy items must be repaired at customer’s expense during RAM proceedings in order for RAM to set up, fly, and deliver the finished product.
  • Old engines are removed. Engine beds are cleaned and inspected. Four hrs. labor per engine is standard.
  • Due to the tendency to contaminate the engine oil supply, the propeller unfeathering accumulators will be sent out for overhaul and reinstalled.
  • Installation of D’Shannon Aviation High-Efficiency Baffle Cooling Kit
  • Applicable RAM R.O.I. Installation Parts are installed.
  • Engines installed and set up, involving multiple flights and flight fuel is included.
  • Aircraft washed. Interior cleaned prior to delivery and customer acceptance.
  • Remarking of serviceable MP/fuel flow gauge(s).
RAM Overhauled Engine TBO Warranty
  • 100% Engine and accessories, for the 1st year, or 500-hrs, whichever occurs first.
    Thereafter, the engine only is warranted on a prorata basis to TBO at RAM’s reduced minimum accrual rate of only 30 hours per month, thus extending coverage over four years. For complete details go to www.ramaircraft.com/ramtbowarranty.
Governor and Propeller Eligibility
  • Governor: Woodward D210439, A210780, or 210622 (Use B210710 or B210800 w/ prop synchronizer
  • McCauley C512
  • Hartzell Super Scimitar PHC-C3YF-2(U)(F)/(F)7663(B,K)-2R or PHC-J3YF-2(U)(F)/(F)7663(B,K)-2R
  • Discuss with your RAM Representative propeller options and pricing
C55 and D55 Engine Mount Eligibility
  • Beechcraft Part Number: 96-910010-61 or -67. Note: If standard C55 or D55 mounts (PN: 96-910010-1, 96-910010-57) are used, Beechcraft Mandatory Service Bulletin 2362 Rev. 1 and AD 91-15-20 must be completed and the manifold pressure limitations of FMS 3845R apply.
Additional Specifications
  • Exchange Core Policy: Engine, crankcase, crankshaft, internal gears, exhaust, accessories, propeller, governor, and hardware items are only sold on an exchange basis, based upon the customer's exchange of like type and normal runout cores as removed from subject aircraft, and serviceable to RAM's overhaul specifications. Cores will be collected from your airplane immediately during a RAM installation. Non-serviceable core fees will be invoiced, due and payable to RAM before airplane delivery.
  • Items not included: Vacuum pump, alternator, exhaust risers and exhaust parts are not included unless specified by an optional purchase order and a work order supplement issued at the time of engine order placement.
    Customer - Discuss the following with your RAM Representative before ordering.
  • Aftermarket STCs: Engine parts and accessories required by aftermarket STCs such as, but not limited to, turbo normalizing, fuel pump changes, and turbo style oil pumps are not included with a RAM OHE engine.
  • Aftermarket STC Parts: Substitution or addition of any aftermarket parts is an additional charge. Please review with RAM prior to engine overhaul. Pre-shipment of aftermarket cores may be required.
  • Fuel System: To ensure selection of the proper fuel system, customer needs to specify the Continental engine specification number when placing an engine order.
    [CMG spec. numbers 33B, 37B, and 45B require a non-standard fuel system.]
  • Upgrade to fine wire spark plugs - Add: $864 per engine.


Optional Parts and Engine Installation Items
  • New 100 amp Alternator Package:
    Hartzell Engine Technologies ALV9610 with nut, thrust washer, cotter key, and
    overhauled alternator drive hub. When purchased with an engine RAM will install for
    no additional cost. (Retail $2,181) Only when purchased with a RAM engine:
    $1,662 each - Exchange
Crankshaft Refund
  • If the customer provides two serviceable and overhaulable CMG 550 crankshafts, deduct $8,000 from the package price.

Baron C55, D55, E55, 58, and 58A
Two Engines Installed at RAM: $134,846 - exchange basis
(Price based on conversion of your IO-520-CB engines. For conversion of your IO-520-C engines, add $2,000 per engine)

  • RAM OHE CMG IO-550-C Engines
  • Installation Parts - Included
  • Installation and Set-up
  • Governor - Reuse Customer’s
  • Propeller - Reuse Customer’s (See Propeller Eligibility)
    (To reuse, propeller must be eligible and propeller and governor must be airworthy.)
RAM Aircraft, LP • 7505 Karl May Drive • P.O. Box 5219 • Waco, TX 76708
Phone: (254) 752-8381 • Fax: (254) 752-3307 • www.ramaircraft.com