Supplemental Type Certificate Number SA02987CH

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Welcome to the new ElectroAir Electronic Ignition System (EIS) on Cessna N724TM N724TM engine magneto system was modified with the specification approved in this Supplemental Type Certificate (STC). United States of America Department of transportation -- Federal Aviation Administration Supplemental Type Certificate Number SA02987CH This certificate issued to Electroair Acquisition Corporation Left Magneto - Remains a standard mechanical magneto. Right Magneto - is modified to an Electronic Ignition System. This Electronic Ignition System STC Modification Provides Increased Engine Performance  Stronger Spark  Variable Timing – Delivers greater energy. – Variable spark timing improves efficiency over a wider range of operating speeds and conditions. – High-energy multi-strike start mode helps overcome a variety of start-up challenges. – Reduces moving parts – Reduces maintenance. – Longer spark and variable timing will reduce fuel consumption (10% to 15%).  Multi-Strike Start  Fewer Moving Parts  Better Economy/Safety The EIS STC removed and installed the following engine components. Installed the Trigger Mechanism (MTH) which directly replaces the right magneto, feeds engine position & RPM information to the Controller. Installed a MAP Sensor that reads manifold pressure (altitude) and supplies a signal to the controller to advance timing; spark timing will not be advanced above 24” of MAP. Installed The coils that fire directly into the spark plugs; no distributor involved. The coils fire the plugs on the compression stroke and on the exhaust stroke. Right Mechanical Magneto is removed How did the EIS STC Modify the Instrument Panel. New Electronic Ignition System [EIS] 10 amp Coil circuit breaker was installed New Electronic Ignition System [EIS] 2 amp circuit breaker switch was installed To safely check the Electronic Ignition System [EIS] magneto RPM drop the Left and Right ignition positions have been relocated on the ignition switch. OFF ON Essential Documents Required to Operate the Electronic Ignition System POH EIS STC Cessna 172M Checklist Where is the Electronic Ignition System (EIS) Supplement Type Certificate [STC] Located. How does the EIS Installation Change the Pilot Preflight Checklist Procedures. NOTE: Verify that the EIS 2 amp circuit breaker switch is in the UP Position UP Position is ON DOWN Position is OFF OFF ON How does the EIS Installation Change the Pilot Before Starting Engine Checklist Procedures. NOTE: Verify that the EIS 2 amp circuit breaker switch is in the UP Position UP Position is ON OFF ON How does the EIS Installation Change the Pilot Starting Engine Checklist Procedures. EIS Switch set in the UP Position - ON Master Switch - ON Ignition Switch - START If the battery voltage is not sufficient to start the engine, the battery is deemed “Dead” and the start procedure must be aborted. The battery must be charged or replaced before attempting to restart the engine. CAUTION: OFF ON How does the EIS Installation Change the Pilot Before Takeoff Checklist Procedures. Verify EIS Switch - ON Set RPM to 1,700 RPM Ignition Switch - BOTH Switch Back to – BOTH To clear to other set of plugs 1,700 RPM 1,700 RPM Switch Back to - BOTH MAGNETO CHECK NOTE: If Right Magneto is checked 1st, the engine could experience back firing, loud explosive sounds and vibrations. Max Drop 125 RPM Switch Ignition To – LEFT For a few seconds –Note RPM drop Note: There may be little or no RPM drop on the EIS magneto Switch Ignition To – RIGHT For a few seconds –Note RPM drop Max Drop 125 RPM OFF ON How does the EIS Installation Change the Pilot Shutdown Checklist Procedures. NOTE: Verify that the EIS 2 amp circuit breaker switch is in the UP Position UP Position is ON OFF ON Electronic Ignition System “Abnormal and Emergency Procedures” POH EIS STC Cessna 172M Emergency Checklist Essential Electronic Ignition System Abnormal Operating Procedures “Alternator/Generator Failure” In the invent of an alternator failure the EIS will drawing approximately 0.75 AMPS from the aircraft's Battery Essential Electronic Ignition System Abnormal Operating Procedures “Dead/Bad Battery” If the battery voltage is not sufficient to start the engine, the battery is deemed “Dead” and the start procedure must be aborted. The battery must be charged or replaced before attempting to restart the engine. Inadequate charge on the battery can cause the EIS to not operate. In the case of a bad battery, the battery must be replaced. Essential Electronic Ignition System Emergency Procedures “Extremely rough running engine” Step 1: Turn OFF the EIS. Step 2: Wait for roughness to reduce. Step 3: Keep EIS OFF and make a precautionary landing. A. If the engine continues to run extremely rough, turn power back on to the EIS and start standard in-flight engine troubleshooting. B. If the engine roughness does reduce, proceed to step 3. Note: Treat the EIS as the magneto it replaced for all other in-flight troubleshooting. After any precautionary landing, have aircraft inspected by appropriately rated aircraft mechanic. Essential Electronic Ignition System Emergency Procedures “Severe loose in engine power ” Step 1: Turn OFF the EIS. Step 2: Determine if the engine looses significantly more power (RPM). Step 3: Keep EIS OFF and make a precautionary landing. A. If the engine looses approximately the same amount of RPMs that are lost during the MAG check turn power back on to the EIS and start standard in-flight engine troubleshooting. B. If the engine does not loose significant RPMs, proceed to Step 3. Note: Treat the EIS as the magneto it replaced for all other in-flight troubleshooting. After any precautionary landing, have aircraft inspected by appropriately rated aircraft mechanic. United States of America Department of transportation -- Federal Aviation Administration Supplemental Type Certificate Number SA02987CH This certificate issued to Electroair Acquisition Corporation