Starting procedure Seminole

TO: ALL FLIGHT STUDENTS AND INSTRUCTORS

FROM: FLIGHT OPERATIONS, MANAGEMENT

DATE: JUNE 20, 2019

RE: CHECKLISTS, PIMs, AND ATTENTION TO DETAIL

We recently had significant damage to an aircraft due to an incorrect starting procedure. This very fundamental task is reprinted below from the checklist and Pilot Information Manual (PIM).

It is very important that ALL procedures are to be completed in strict adherence to the written procedures in order to assure the required levels of safety. All pilots are expected to have the necessary knowledge to operate safely such as the start limitations, which are also printed below.

PIPER PA-44-180 SEMINOLE STARTING PROCEDURE

4.13a Normal Start – Cold Engine (4.5c)

Turn the battery master switch ON and check that the three green gear position lights are illuminated. Open the throttles about ¼ inch. Advance the propeller controls to full forward and the mixture controls to full rich. Start one engine at a time using the following procedures.

Turn the electrical fuel pump on. Prime the engine as required. Verify the propeller area is clear, the turn on the magneto switches. Engage the starter.

When the engine starts, adjust the throttle and monitor the oil pressure. If no oil pressure is indicated within 30 seconds, shut down the engine and have it checked. In cold weather it may take somewhat longer for an oil pressure indication.

Repeat the above procedure for the opposite engine. After the engines have started, check the alternators for sufficient output and the gyro vacuum gauge for a reading between 4.8 and 5.2 in. Hg. and that the flow buttons are retracted.

4.13b Normal Start – Hot Engine (4.5c)

Turn the battery master switch ON and check that the three green gear position lights are illuminated. If the engines are still warm from previous operation, begin by first opening the throttles about ½ inch. Advance the propeller controls to full forward. Start one engine at a time using the following procedures.

Turn the electrical fuel pump on. Advance the mixture control full rich. Verify the propeller area is clear and turn magnetos on. Engage the starter. When the engine starts, adjust the throttle and monitor the oil pressure. If no oil pressure is indicated within 30 seconds, shut down the engine and have it checked.

Repeat the above procedure for the opposite engine. After the engines have started, confirm that the alternators are on by checking the ammeters for output. Check the gyro vacuum gauge for a reading between 4.8 and 5.2 in. Hg. and that the flow buttons are retracted.

4.13d Engine Start When Flooded (4.5c)

If an engine is flooded (by overpriming, for example), the mixture should be pulled to idle cut-off. Advance the propeller control full forward and the throttle full open. Verify that the electric fuel pump is off. Turn the battery master switch ON, verify the propeller area is clear, then turn the magneto switches ON. Engage the starter.

Advance the mixture control only after the engine has started, and retard the throttle lever to 1000 RPM. Monitor the oil pressure. Confirm that the alternators are on by checking the ammeters for output. Check the gyro vacuum gauge for a reading between 4.8 and 5.2 in. Hg.

NOTE: Starter manufacturer recommends starter cranking periods be limited to 10 seconds with a 20 second rest period between cranking periods. Maximum of 6 start periods allowed. If start is not achieved on sixth attempt allow starter to cool for 30 minutes before attempting additional starts. Do not engage the starter immediately after releasing it. This practice may damage the starter mechanism.

Last Modified 3/6/20