Do Ercoupes need TSO'd
have no professional or expert qualifications of any kind.
It's fully up to you to check any information you
find here with
standard aviation industry sources such as
manuals, flying instruction books and, above all,
In her struggle to comply fully with the regulations while
installing the same lower-cost instruments used in the experimental
aircraft fleet, Linda Abrams found the references listed in this
The first section is the second page of Aircraft Specification
A-718 which governs the 415-C and 415-CD models, in the section
titled Specifications Pertinent to all Models.
Type Certificate Data Sheet A-787, which governs all the later
models of Coupes, contains the exact same critical wording.
The next section has excerpts from the Civil Aeronautics Manual
4a which specifies the exact requirements governing manufacture of
our aircraft, including instruments. Linda has highlighted the
section pertaining to airspeed indicators.
With this information, Linda has received approval from her
regulation-strict A&P-AI to install a non-TSO airspeed indicator.
Feel free to print this information and put it in your aircraft
documents binder for use in consultation with your own A&P-AI.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Here is some info from the EAA on TSO requirements . . . (thus
As you can see, they are not required in the ercoupe. So
inexpensive NEW altimeters can be installed, and are available from
all of the parts folks.. like Wag Aero...their catalog lists a 0 -
20,000 ft altimeter # 064-000 at $202.75....I'm sure others also
have similar non-TSO altimeters at low prices....
Best of luck