B737 - APU BLEED - FCOM rev23
Hi Guys,
Im new around here and in air. I have an question on B737 FCOM rev 23, it suggest to give apu bleed air after 2 full min. But previous fcom revisions , it was 1 min. I wonder what is the reason that they increased the time to give bleed ( except the reason to extend the service life of the apu) ?
FCOM : Operate the APU for two full minutes before using it as a bleed air source. This two minutes stabilization is recommended to extend the service life of the APU.
Thank you so much guys for answers
Have safe flights