Laversab · Aviation

Leak Checks

Leak checking an aircraft’s pitot-static system is essential to ensure accurate airspeed and altitude readings. Here are the steps to perform a thorough leak check:

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Visual Inspection:

Examine the pitot tube, static ports, and associated tubing for any visible damage, cracks, or loose fittings.

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Visual Inspection:

Ensure that the pitot tube is unobstructed (free from dirt, insects, or ice) and that the drain hole is clear.

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Pressurization Method:

Connect a Laversab pitot-static tester to the aircraft pitot tubes and static ports through appropriate adapters.
Apply pressure (usually around 150 knots equivalent airspeed) to the pitot system.
Monitor the airspeed indicator (ASI) for any sudden changes or deviations.
Hold the pressure for about a minute and observe if there’s any drop in indicated airspeed or altitude. This can be accomplished through the “Leak” mode from the Laversab Pitot-Static test system.
Slowly release the pressure to avoid damaging the ASI.

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Alternate Static Source Check:

While in flight, switch to the alternate static source (if your aircraft has one).
Observe any changes in airspeed and altitude indications.
If there’s a significant difference, it could indicate a leak in the primary static system.

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Calculating Airspeed:

The difference between dynamic pressure (from the pitot tube) and static pressure (from the static ports) is the pitot-static pressure differential.
This differential pressure is used to calculate the aircraft’s airspeed.
The airspeed indicator in the cockpit displays this calculated value.

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Regular Maintenance:

Schedule routine inspections to ensure the pitot-static system remains leak-free.
Address any issues promptly to maintain accurate instrument readings.

Remember that a properly functioning pitot-static system is critical for safe flight. Regular checks and vigilance are essential to prevent leaks and maintain accurate air data.