I wonder how a 2-33 would fare in the same inspection.
The only required equipment at the time of manufacture
was an ASI (if one believes the dog-eared POH). But the
part 91 VFR rules currently want an altimeter and
compass as well.

Not true.

From page 1-2 of the Schweizer 2-33 sailplane flight-erection-maintenance
manual, form F-114 (General Description section):

"6. Instruments:
Front only - ASI is required. Additional instruments may be
added, up to a full panel, as desired.
NOTE: Instrument flight is prohibited, regardless of instrumentation."

From 91.205
"powered civil aircraft with a standard category U.S. airworthiness
certificate"

Aha! The VFR requirements apply to POWERED aircraft.

I stand corrected. Like the ELT, I am fortunate that someone
has forced me to consult the regs carefully... Thank you...


Mark Boyd