Sky-Tec's
master PMA authorization letter from the FAA
What to do if your aircraft
(or engine) isn't listed on the PMA AML(s)?
Is it a
"vintage aircraft"? Refer to FAA
Advisory Circular 23-27 which defines
"vintage" as any small aircraft "type
certificated before January 1, 1980."
FAA AC 23-27
permits you to "install substitute/alternate engine parts
for a...original equipment or a PMA part for the engine
installed on your aircraft" if "a) The...part is PMA
approved for a certificated engine, even if that engine is not
the model approved for use on your aircraft model, and b) if
the part is identical to...the part for your engine model, or
is listed as an approved substitute part by the engine manufacturer,
then you may install the alternate part, and document the
installations with only a logbook entry."
Notes of explanation on
Lycoming Applications:
All Sky-Tec Lycoming
starters
are manufactured under authority of the FAA via FAA PMA
supplements listed above. Lycoming
Service Instruction 1154(current
revision) provides additional documentation
authorizing these starters to be
installed as a replacement for identical or any previously
certified Lycoming starter. Prior to these methods
of eligibility, Sky-Tec HT, PM & LS starters were
certified via FAA STC. Those STC's are no longer
relevant. Again, all new installations of Sky-Tec
starters are eligible via FAA PMA. No STC or 337
paperwork is required for Sky-Tec Lycoming starter
installations.
Also, some foreign
governing entities will require additional authority for
installation of an FAA-PMA part. One that comes to mind
is the 149-NL/ec starter on the 24V Cessna 172R & S and
182S product lines which is authorized by Cessna CPDS (use
your CPDS access to verify).
Notes of explanation on
Continental Applications:
Ancient History
for Lycoming Applications:
Sky-Tec LS, PM and HT
starters were originally certified with eligibility via STC
(see Lycoming Starter STC's below). If on the slim chance your
starter installation was approved under STC eligibility, your installation required an FAA form 337 to be
filed by an IA. The STC's (no longer used but still
valid) are: