Abnormal Engine Starts B737

Abnormal engine starts : Compliments the ATPL AGK Systems exam when learning the different type of failed starts including Wet start, Hung start etc. I have DELIBERATELY extended the failure to show engine instrumentation readings. In normal operations, the start sequence would be terminated much sooner. This is a simulator, there is no risk of costly damage - but you get to see how the engine instrumentation responds to the failure. Something you may never see otherwise with a real engine. The video is for educational purposes.

[@flyzam71]

Reviewing upcoming sim. Thanks for the help. We don't get to see these very often

[@royjameskelly]

Thank you

[@rishabhchhabra777]

Brilliant video to revise everything before sim. Thank you.

[@royjameskelly]

Thank you.

[@MrEkamkohli31]

Amazing work. Thank you!

[@royjameskelly]

Glad you liked it! Thanks

[@ibeeadane4430]

Very important ! Thank you

[@royjameskelly]

Thank you.

[@tameryigit737]

Good work, thank you.

[@royjameskelly]

You’re welcome!

[@samaanalkhaldi2364]

Thanks 👍

[@samuelwondyifraw5132]

Thanks sir!

[@royjameskelly]

You’re welcome.

[@pennin16]

Could you do a video on all the different types of engine failures in flight? E.g. failure, surge, limit, fire, severe damage, fire, dual failure etc

[@royjameskelly]

Hi, I’ll give it some thought. Thanks for the interest!

[@derrick1707]

Thanks!

[@royjameskelly]

You’re welcome!

[@rustolo5365]

Interesting

[@royjameskelly]

Thank you

[@JonhatanRodriguezJRO]

Normal start 0:16
Hot start 1:26
Hung start 2:38
No ignition 4:06
No N1 rotation 5:04
Start valve doesn't open 6:08
Start valve fails to close 6:26

[@futile2try]

What causes a hung start? Poor fuel delivery?

[@royjameskelly]

Hi, these are a few (not all), generic problems, not necessarily associated with all engine designs, but some to consider.
Low RPM during start.
Faulty air starter, blockage in air start valve; start valve malfunction (on some aircraft).
Possibly trying to start with a tail wind causing insufficient engine RPM to be reached with starter.
Maybe trying to start with PACK’s on and therefore not enough bleed air.
Fuel; problem with fuel control unit/fuel nozzles.
Too much air extraction from the HBOV, (Handling bleed off valve).
Contaminated compressor.