I’m concerned about the growing number of stuck starter/MCU failures. I’ve heard many stories from our local mechanic and I’ve not seen them posted (maybe on members site). Almost two weeks ago, a locally (Santa Barbara,CA) based aircraft experienced an starter/MCU failure at about 110 TT. Yesterday, I talked briefly (twr frq) to another SR22 (i think N84PW) that had just landed after experiencing non-essential systems failure. He was based out of Orange County and said he’d experience problems starting one or two flights previous. He was unaware of starter issues so I doubt his failure will get posted otherwise. He also mentioned throttle problems and being unable to “close” throttle and had to use mixture to land. I presume he was just rusty on no flaps landings and carrying too much speed.
I relayed to him the procedure of checking ammeter prior to turning on alternators (for the future). Also, commented that the mechanic will want to replace light-weight starter with full-weight (6lbs heavier) that doesn’t stick.
The factory on delivery in January said that starters were recently improved but I know at least one starter/MCU failure was also a January plane.
The local mechanic has shown me the problem (LW starter has no play to disengage clutch). He’ll almost refuse to replace a LW starter with another LW. When does this become a Service Bulletin or Airworthiness Directive? I think there should be at least a warning through official channels so that all owners/operators can monitor starter more carefully. Perhaps an AD to replace LW starters or install starter engaged warning light?
I’m just a little suprised at what has to be at least the 10th failure I’ve heard about in the two months I’ve been flying an SR22. It seems likely that many more will fail. How many others go unreported?