Snowbirdxx
Well-Known Member
yes, same stuff.
Jack, you are going to have to do it again after September first when the AD becomes effective if I interpret it correct.Done. No cracks.
That would be interesting to know. Last week we inspected BOTH forward and rear on my 2012, 180hp A1-C with about 600 hours total time, no cracks.Has anyone on the forum beside jkalus seen any issues as mentioned in the AD on the forward support tube?
Since SB28, Rev A addresses the rear tube and is five years old does anyone know what happened that the feds flagged both areas in the upcoming AD?
Mike, the early strut designs had bolts welded to the strut ends. These carbonize during the welding process. Then the useless counter it put a lot of tension on the threads. Vibration and tension made the carbonized bolts break. Then the rear strut got redesigned to a solid wire with cut threads. That got replaced with rolled threads. Meanwhile the drugs are heavy ugly but do not break any more.other approaches to that problem could have solved that problem much nicer.The tail on these (and most other) aircraft really take a lot of punishment from the propeller pulses. So, as Thomas noted, ANY play in that system is bound to eventually cause damage.
Next time you're out flying, look back at your tail when under some power, as in a climb with power.
Early Huskys had the lower brace wires break at the attach point on the fuselage. I had this happen twice on skis. Those joints were "improved", but I suspect power pulses on the tail off the propeller probably contributed.
MTV
??? Curious how a SB put out now could supersede AD instructions? Is that possible....There is an SB coming out this week. I would sit tight before doing anything. It’s possible no hole covers will be needed.