MD HELICOPTERS, INC. MODEL 600N EMERGENCY FLOATS

Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 3 of 9 SECTION II LIMITATIONS General Water landings have not been demonstrated. Type of Operation The emergency floats shall be used only for emergency landings. Take off after a water ditching is prohibited. If a power on emergency landing was executed, the reason for the emergency landing is corrected, and inspection of the rotorcraft reveals no damage, then operation with the Emergency Floats inflated is permitted for flight to a servicing facility for repacking and recharging of the system. The ferrying airspeed is limited to 100 KIAS. In inspection of the electrical and mechanical components in the lower fuselage and pilot static system must be conducted after water landings. Night flight over water beyond autorotational capability to the ground is prohibited unless the 369D292032 Float Lamp Assembly is installed. Altitude Limitations The maximum altitude for inflation is 6,600 ft above the landing surface. Airspeed Limitations Maximum airspeed with the floats stowed: no change RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 4 of 9 Maximum speed for float inflation: 85 KIAS. Maximum airspeed with floats inflated: 100 KIAS Temperature Limitations Operational temperature range for over-water flight is -4° F (-20° C) minimum +125° F (+51.6° C) maximum Weight Limitations Maximum gross weight is 4100 pounds. Placards When emergency floats are installed, the following placards are required: Placard #1 (Installed on the pilot's inside door frame.) RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 5 of 9 Placard #2 (Installed on the pilot's inside door frame.) N NO OT TE E:: Placard #2 is not required if 369D292032 Float Lamp Assembly is installed. SECTION III EMERGENCY & MALFUNCTIONS PROCEDURES Emergency Float Operation • If emergency occurs at airspeeds greater than maximum permissible float inflation speed, i.e., 85 KIAS, reduce speed to an appropriate value prior to float inflation. Do not exceed airspeed limits of the EMERGENCY FLOATS INFLATED V NE Placard. NOTE Inflations have been demonstrated up to 85 KIAS in autorotation and in powered flight. RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 6 of 9 • Pull float activation lever. • For low level over-water operation, immediate pilot reaction will be required to ensure float inflation prior to water contact. • Make a normal landing approach. Minimize forward speed prior to water contact. Recommended water contact speed is 10 knots or less. Do not lower collective until forward speed is 5 knots or less. NOTE The above procedures have not been demonstrated by a water landing. Landings should be made with the helicopter as level as possible laterally and the nose of the helicopter slightly high. One-float-first landings may produce undesirable but controllable yaw. If emergency occurs at night over water and the engine is out, the dual landing lights should not be illuminated above 1000 ft. in order to preserve battery power. Approach and landing as noted above. SECTION IV NORMAL PROCEDURES Checks Prior to Flight • Check condition and security of stowed float package for cuts or holes. • Check hoses for cuts or kinks. RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 7 of 9 • Check for correct reservoir pressures on reservoir valve pressure gauges. Float Cylinder Pressure Limits 2300 2500 2700 2900 3100 3300 3500 -40 -20 0 20 40 60 80 100 120 140 Ambie nt Temperature ( °F) Pressure (psig) NOM MIN Figure 2. Float Cylinder Pressure vs. Temperature RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 8 of 9 • A detent pin is provided in the inflation handle. It must be removed prior to flight and re-installed upon landing. 2.00 - 2.25 3.00 if cargo hook is installed Figure 3. Float Manual Deployment Handle on Cyclic RFM Supplement to the MD Helicopters, Inc. 600N Flight Manual for the Installation of the Apical Emergency Floats 2608 Temple Heights Dr. STC No. SR 00471LA Oceanside, California 92056 Supplement FMS-600(1) FAA Approved: 16 May 2006 Page 9 of 9 In-Flight Inflation Data Float inflation time and altitude required for deployment are presented below. Time is affected by temperature. Deployment altitude is based on a stabilized autorotational rate of descent of 2500 ft. per minute. It was calculated using the tabulated float inflation time, and a two second increment for pilot reaction: Float Inflation Time 5.0 sec. Temps up to 21° C 4.0 sec. Temps above 21° C Altitude Req'd for Deployment 209 ft. Temps up to 21° C 167 ft. Temps above 21° C SECTION V PERFORMANCE DATA In Ground Effect Hover Penalty - Stowed Floats • With floats stowed, no change from that of the basic helicopter. Height-Velocity Diagram • With floats stowed, no change from that of the basic helicopter. Float Lamp Assembly (P/N 369D292032) • Hover performance and Height-Velocity Diagram remain unchanged.