Uploaded March 2025 | Updated September 2026, 2 weeks ago
This video will be about de-preservation of A32F CFM56-5B, but what actually is preservation?
If company not using aircraft engine for a while, it is recommended take several simple but effective steps to keep it in best condition while it’s sitting idle. The required level of preservation will depend on the expected period of inactivity
1. Preserving the Aircraft Engine Fuel System
During normal operation, contaminants such as humidity may be found in the fuel. When the engine is active on a regular basis, it’s generally not an issue, since the contaminants will flow down into the combustor and be consumed there.
It’s a different story if your aircraft engine is in storage for an extended time. Contaminants will settle in areas that could lead to corrosion of the fuel system components, which will adversely impact performance.
To avoid potential issues, we will disconnect the fuel line, purging the existing fuel and replacing it with preservation fluid.
2. Preserving the Oil System of an Aircraft in Storage
Sometimes oil and water do mix. The oil used in an engine’s lubrication system is slightly hydroscopic—meaning it has the ability to absorb water. Since the oil system is not completely enclosed, air and oil will interact, and if the air is humid, the oil will extract water from it, become slightly acidic and slowly eat away at components and casings.
To prevent this, we preserve the oil system by adding preservation fluid in the oil.
3. Preserving the Entire Engine
When your engine’s going to be unused for some time, avoid condensation—which leads to rust. Keep it in a dry environment where there are no major temperature swings.
Storing the engine inside a hangar may not be sufficient since the temperature could fluctuate when the doors open and close or in cold weather conditions. To protect the engine, it is necessary to place desiccant bags in it and sealing off all its openings. In either case, you should monitor the humidity level inside the bag or engine using an indicator that will alert you by changing color.
No matter what kind of engine you have, moisture is your enemy. Materials like steel and magnesium are vulnerable to corrosion from water.
you know more less all about preservation, now lets take look on de-preservation
Where you can find me:
Instagram:
instagram.com/zeto.r
tiktok:
tiktok.com/@zeto.r
Patreon:
patreon.com/Zetomaintenance?utm_campaign=creatorshare_creator
Linkedin
linkedin.com/in/tom%C3%A1%C5%A1-zeman-1861a094
———-Video content———————
00:00 - intro
00:19 - removal of covers
01:18 - draining of the tank
04:23 - draining of AGB
07:42 - draining of TGB
11:22 - filling of the tank
11:59 - master chip detector
12:26 - Starter chip detector
13:12 - wet crank procedure
15:28 - dry crank
16:18 - test of the Trust Reverser
16:36 - close-up
#airbus #airbus321 #a320 #a321 #aircraft #a321neo #aircraftmaintenance #howto #oil #oilsystem #aircraftmaintenanceengineer #aircraftlovers #airbuslovers #aircraftengineer #aircrafttechnician #cfm565b #cfm #cfmengine #aircrafttechnician #aviationgeeks #aviationgeeksociety #aviationphotography #aviationdaily #zeto.r #breakdown #components #aircraft #aircraftmaintenace #wefixyoufly #learningeveryday #creatingjourneystronger #austrianairlines
This video will be about de-preservation of A32F CFM56-5B, but what actually is preservation?
If company not using aircraft engine for a while, it is recommended take several simple but effective steps to keep it in best condition while it’s sitting idle. The required level of preservation will depend on the expected period of inactivity
1. Preserving the Aircraft Engine Fuel System
During normal operation, contaminants such as humidity may be found in the fuel. When the engine is active on a regular basis, it’s generally not an issue, since the contaminants will flow down into the combustor and be consumed there.
It’s a different story if your aircraft engine is in storage for an extended time. Contaminants will settle in areas that could lead to corrosion of the fuel system components, which will adversely impact performance.
To avoid potential issues, we will disconnect the fuel line, purging the existing fuel and replacing it with preservation fluid.
2. Preserving the Oil System of an Aircraft in Storage
Sometimes oil and water do mix. The oil used in an engine’s lubrication system is slightly hydroscopic—meaning it has the ability to absorb water. Since the oil system is not completely enclosed, air and oil will interact, and if the air is humid, the oil will extract water from it, become slightly acidic and slowly eat away at components and casings.
To prevent this, we preserve the oil system by adding preservation fluid in the oil.
3. Preserving the Entire Engine
When your engine’s going to be unused for some time, avoid condensation—which leads to rust. Keep it in a dry environment where there are no major temperature swings.
Storing the engine inside a hangar may not be sufficient since the temperature could fluctuate when the doors open and close or in cold weather conditions. To protect the engine, it is necessary to place desiccant bags in it and sealing off all its openings. In either case, you should monitor the humidity level inside the bag or engine using an indicator that will alert you by changing color.
No matter what kind of engine you have, moisture is your enemy. Materials like steel and magnesium are vulnerable to corrosion from water.
you know more less all about preservation, now lets take look on de-preservation
Where you can find me:
Instagram:
instagram.com/zeto.r
tiktok:
tiktok.com/@zeto.r
Patreon:
patreon.com/Zetomaintenance?utm_campaign=creatorshare_creator
linkedin.com/in/tom%C3%A1%C5%A1-zeman-1861a094
———-Video content———————
00:00 - intro
00:19 - removal of covers
01:18 - draining of the tank
04:23 - draining of AGB
07:42 - draining of TGB
11:22 - filling of the tank
11:59 - master chip detector
12:26 - Starter chip detector
13:12 - wet crank procedure
15:28 - dry crank
16:18 - test of the Trust Reverser
16:36 - close-up
#airbus #airbus321 #a320 #a321 #aircraft #a321neo #aircraftmaintenance #howto #oil #oilsystem #aircraftmaintenanceengineer #aircraftlovers #airbuslovers #aircraftengineer #aircrafttechnician #cfm565b #cfm #cfmengine #aircrafttechnician #aviationgeeks #aviationgeeksociety #aviationphotography #aviationdaily #zeto.r #breakdown #components #aircraft #aircraftmaintenace #wefixyoufly #learningeveryday #creatingjourneystronger #austrianairlines
