REFLECTOR: Pitch Trim Mystery

[Scott Derrick]

I'd guess a faulty(intermittent) connection somewhere?  Have somebody 
hold the trim button up or down and start shaking wires from the 
actuator back to the switch.

It could also be a bad relay, that fused and came unstuck when you 
unpowered the system?

When you said, "Didn't know how long my arm would hold out", was it 
difficult?  

Scott

John Dibble wrote:
> Seems like when the Reflector has a what-if discussion, soon after someone has to go
> out and experience it.  I guess the pitch trim failure had my name on it.  Last night
> I flew 1.7 hrs at 180 kn with the pitch trim pegged at down trim.  I cut power just
> enough to descend at 500 fpm and kept the trim pegged.  At 5 miles out I slowed to get
> set up for landing and noticed the pitch up trim wasn't working.  Fortunately I've
> flown at night enough, so that that didn't add much to the problem.  I had a 5000 ft
> runway and a direct 10kn headwind which was a good thing.  Didn't know how long my arm
> would hold out so I took the fastest way in and kept my speed up to 90kn.  Wasn't sure
> if I could hold it off at 70.  The landing was a little rough, but I've done worse.
> Today I checked it out and the trim is working fine.  Can anyone tell me what
> happened?  I have fuses and no CBs so it wasn't that.
>
> John
>
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