AOPA today reported in E-pilot newsletter that the FAA released an emergency AD on various TCM engines utilizing Slicks (including IO-360) requiring their replacement. AOPA says FAA issued the AD in response to several incidents including the in-flight failure of an IO-360 installed in an SR20 in which the mag impulse coupling stop pin migrated out of the mag frame, causing damage to the gear train of the engine and ultimately engine failure.
AOPA today reported in E-pilot newsletter that the FAA released an emergency AD on various TCM engines utilizing Slicks (including IO-360) requiring their replacement.
All the affected SR20’s have already had their mags changed (including N142CD, before delivery). I find it a little curious that the AD is given emergency status, and requires mag replacement within 10 hours, when TCM knew about this problem (and advised Cirrus Design) in late April. That’s over six weeks. Either TCM has contacted all affected aircraft owners already (in which case why the emergency AD?) or they haven’t, in which case you’d be really cheesed off if your engine had happened to have failed in the intervening period!
For the record, one SR20 engine failed (the pin fell into the oil pump) one other had the pin come out, but no other damage ensued, and about 4 others were grounded for mag replacement.
All the affected SR20’s have already had their mags changed (including N142CD, before delivery). I find it a little curious that the AD is given emergency status, and requires mag replacement within 10 hours, when TCM knew about this problem (and advised Cirrus Design) in late April. That’s over six weeks. Either TCM has contacted all affected aircraft owners already (in which case why the emergency AD?) or they haven’t, in which case you’d be really cheesed off if your engine had happened to have failed in the intervening period!
There was presumably a priority SB from TCM, and the AD is the FAA making it mandatory.